Shenzhen Huhe Circuits Co.,Ltd.

Via in Pad(2020年02月24日)

pcbsky — 2020-02-14T18:44:18+0900

https://www.pcbsky.com/pcb-fabrication/via-in-pad.html

What is In Pad Via
The holes drilled on the chip pads on the PCB can be referred to as VIA IN PAD. In the manufacturing process, after the via plating, the resin is filled and then the surface is plated and filled, and the via is not visible when the patch is applied.

As we all know, via in pad technology, the PCB plugging process is a process that is produced by the higher requirements of the PCB manufacturing process and the surface mount technology.

The via hole plugging Effect has the Following Points
• Prevents short-circuiting of tin from the via through the component surface during PCB over-wave soldering
• Avoid flux remaining in the vias
• Prevent the soldering of the solder balls from over-wave soldering, causing a short circuit
• Prevent surface solder paste from flowing into the hole to cause solder joints, affecting placement

The advantage of the resin plug hole relative to the solder resist plug hole is that the flatness of the pad of the resin plug hole is higher than the flatness of the hole of the solder resist plug, and the disadvantage is high cost and complicated process.

Via in Pad: Filled with epoxy; Surface Finishing; Plated Copper Over Via.

PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for pcb shenzhen, Welcome to custom VIA IN PAD PCB directly from PCB Manufacturer China Shenzhen at low cost.

Thick/Heavy Copper PCB(2020年02月23日)

pcbsky — 2020-02-14T18:43:53+0900

https://www.pcbsky.com/pcb-fabrication/thick-heavy-copper-pcb.html

Are you looking for heavy copper pcb manufacturers?
Thick Copper PCB Difinition and Thickness
There is no exact definition of thick copper in the PCB industry. Generally, the copper thickness ≥ 2oz is defined as Heavy copper PCB. Heavy copper PCB is mainly used in high-current electronic products. High-current electronic products are generally high-power or high-voltage PCBs. They are mostly used in automotive electronics, communication equipment, aerospace, planar transformers, and secondary power modules.

Our thickest copper PCB oz can make 6 ounces. However, considering the side eclipse factor, 3 oz copper thickness of more than 3 ounces should pay special attention to the line width of the inner layer.

Inner 3 oz copper pcb: line width 6/7 mil outer 3 ounces: line width 8/12 mil
Inner layer 4 oz copper pcb: line width line spacing 8/11 mil outer layer 3 ounces: line width line spacing 9/15 mil
Inner 5 oz copper pcb: line width 10/16 mil outer 3 ounces: line width 11/16 mil
Inner 6 oz copper pcb: line width line spacing 12/18 mil outer layer 3 ounces: line width line spacing 14/18 mil

Heavy Copper PCB Production Difficulties
1. If the etching is not clean during the etching process, the pressure will not reach the standard, and if it is serious, it will cause the line to short-circuit.
2. Heavy Copper PCB dense lines are prone to foaming during solder mask ink fabrication
3. Heavy Copper PCB has the highest scrap rate in the inner layer of the drilling process, the hole is thick, the nail head is the highest.
4. In the pressing process, it is easy to have insufficient glue filling, excessive flow glue, uneven thickness, void and so on.

When the electronic device need high power or current through, Then we need consider heave copper to control the thermal on PCB, Thermal management is more important than ever today as electronics are used in demanding environments and Operative at higher currents. Heavy copper PCBs (copper conductors 5 oz/ft2 – 19 oz/ft2 in inner And/or outer layers; sometimes defined as more than 4 oz per square foot (ft2)) can help conduct heat away from components so failure is greatly reduced. PCB manufacturers create durable wiring platforms with heavy copper. And boards may be manufactured in a smaller footprint as they can contain multiple weights of copper on the same circuit layers.

The Benefits of Heavy Copper PCBs include: Reduction of Thermal Strain
A. Better current conductivity
B. Can travelers repeated thermal cycling
C. Smaller PCB size due to layering of copper
D. Increased connector site strength

PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for pcb shenzhen, Welcome to custom Thick Copper PCB Board directly from Heavy Copper PCB Manufacturer at low cost.

Rogers PCB(2020年02月22日)

pcbsky — 2020-02-14T18:43:27+0900

https://www.pcbsky.com/pcb-fabrication/rogers-pcb.html

What is rogers 4350 datasheet?
Rogers PCB , High Frequency PCB,RF PCB (Enquiry pls send to Sales@pcbsky.com )

Supporting the military is something PCBSky is very proud of, and we were contracted to assemble a PCB for use in a military communications application. The RF PCB assembly used Rogers 4350, Rogers 4003,RT5880 material, and the board required surface mount technology for the double-sided assembly that featured 250 placements. Board specs included 3 layers, standard vias, and 1 panelization. Final measurements came to 8 x 5.75 in. We performed final testing using automated optical inspections and x-ray inspection before delivering product to the customer.

Serving industries from consumer to military, we continuously strive to build Rogers PCB products that exceed your expectations, to develop long-term customer relationships, and to become your best possible manufacturing partner.

Rogers PCB Material in Stock Normally:

Rogers 4350B
rogers 4003c datasheet
Rogers 3003
RT5880
RT5870
Right now, lots of customers to buy Rogers 4350B PCB. We keep All types Rogers 4350B material in stock, if you need any Rogers 4350B PCB, welcome to contact us .
Rogers PCB Enabling step changes in high-frequency, high-speed performance for wired & wireless communications circuits worldwide with Advanced Circuit Material. Key Products/Brands include: RT/duriod® High Frequency Laminates; RO4000® High Frequency Circuit Materials; RO3000® High Frequency Laminates; and TMM® Thermoset Microwave Materials. For applications such as: Wireless Base Stations; Aerospace & Defense; Automotive; and High Speed Digital.

Rogers High Frequency Laminates
3001 Bonding Film (Thermoplastic Chloro-fluorocopolymer)
RO3000® series High Frequency Laminates (PTFE/Ceramic)
RO3035® series High Frequency Laminates (PTFE/Ceramic)
RO3200® series High Frequency Laminates (PTFE/Ceramic)
RO4000 High Frequency Laminate with TICER Foil
RO4000 laminates data sheet and fabrication guidelines: RO4003C, RO4350B
RO4400 prepreg data sheet and fabrication guidelines: RO4450B, RO4450F
RO4500 Antenna Grade Laminates for High Volume Applications
RT/duroid® 5870/5880 Glass Microfiber Reinforced rogers PTFE Composites
RT/duroid 6002 laminate data sheet
RT/duroid 6006/6010 laminate data sheet
RT/duroid 6202 laminate data sheet
RT/duroid 6202PR laminate data sheet
TMM Thermoset laminate data sheet: TMM3, TMM4, TMM6, TMM10, TMM10i
ULTRALAM 2000 laminate data sheet
ULTRALAM 3000 LCP laminate data sheet: ULTRALAM 3850
ULTRALAM 3000 LCP Prepreg: ULTRALAM 3908
LONGLITE™ AND R/flex® Flexible Circuit Materials - Thin Dielectrics
LONGLITE™ Flex 200 Adhesiveless Materials
LONGLITE™ Flex 300 Adhesiveless Series
R/flex® 1000 Circuit Materials for Long-life Dynamic Flexing
R/flex® 1100 Circuit Materials - High Temperature Laminates
R/flex® 1500 Assembly Adhesive
R/flex® 2001 Laminates and Coverfilms
R/flex® 2005 Laminates and Coverfilms
8080 Liquid Photoimageable Covercoat data sheet
8080 Liquid Photoimageable Covercoat: LP11
8080 Liquid Photoimageable Covercoat: LP2
R/flex CRYSTAL 7500 Laminates and Coverlayers
R/flex CRYSTAL 7700 Laminates and Coverlayers
R/flex JADE A coverfilm data sheet
R/flex JADE A laminates data sheet
R/flex JADE J coverfilm data sheet
R/flex JADE J laminate data sheet
PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for custom pcb fabrication, Welcome to custom RF Circuit Board from PCB MANUFACTURER CHINA.

PTFE Teflon PCB(2020年02月21日)

pcbsky — 2020-02-14T18:43:05+0900

https://www.pcbsky.com/pcb-fabrication/ptfe-teflon-pcb.html

PTFE Teflon PCB has excellent comprehensive performance: high temperature resistance (-192°C-260°C), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, no adhesion, Non-toxic and other excellent characteristics.

At present, various types of PTFE products have played a pivotal role in the national economy such as chemical, machinery, electronics, electrical appliances, military, aerospace, environmental protection and bridges.

PTFE Teflon PCB Application
The PTFE Teflon PCB is suitable for use in electrical insulation materials and linings, supporting sliders, rail seals and lubricating materials for electrical insulating materials and contact corrosive media. It is used in light industry in rich cabinet furniture. It is widely used in chemical, pharmaceutical, dye container, storage tank, reaction tower kettle, anti-corrosion lining material for large pipelines; heavy industry such as aviation and military; mechanical, construction, traffic bridge slider, guide rail; printing and dyeing, light industry, textile Industry's anti-adhesive materials, etc.

Characteristics of Teflon pcb board
Low loss, low dielectric constant, good consistency, stable chemical properties, and almost no moisture absorption. It is often used on RF and microwave circuits where high requirements are required.
1) high temperature resistance - use working temperature up to 250 °C.
2) low temperature resistance - has good mechanical toughness; even if the temperature drops to -196 ° C, it can maintain 5% elongation.
3) corrosion resistance - for most chemicals and solvents, showing inertness, strong acid and alkali, water and various organic solvents.
4) Weather resistance - the best aging life in plastics.
5) High lubrication - the lowest friction coefficient in solid materials.
6) non-adhesive - is the smallest surface tension in solid materials, does not adhere to any substance, mechanical properties, its friction coefficient is very small, only 1 / 5 of polyethylene, which is an important feature of the surface of perfluorocarbon . Moreover, since the intermolecular force of the fluorine-carbon chain is extremely low, the polytetrafluoroethylene has no stickiness.
7) non-toxic - physiologically inert, long-term implantation of artificial blood vessels and organs without adverse reactions.
8) Good electrical properties - Polytetrafluoroethylene has low dielectric constant and dielectric loss over a wide frequency range, and high breakdown voltage, volume resistivity and arc resistance.

We are a reliable teflon pcb manufacturer in China. PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for custom circuit board china, just contact us!

Multi-layer Flexible PCB(2020年02月20日)

pcbsky — 2020-02-14T18:42:29+0900

https://www.pcbsky.com/pcb-fabrication/multi-layer-flexible-pcb.html

multi layer flexible pcb uses single-sided FCCL and adhesive as the base materials, the similar technology of Double-sided FPC with the method of single side, double access; through several times of lamination. It can be designed to the structure of partly delaminated in order to enhance the flexibility.

The most typical difference between a multi-layer FPC and a single-layer FPC is the addition of a via structure to join the layers of copper foil.

Flexible printed circuit boards are an important class of PCBs. Its characteristics are specifically:
(1) FPC is small in size and light in weight.
(2) FPC can be moved, bent, and twisted.
(3) FPC has excellent electrical properties, dielectric properties and heat resistance.
(4) FPC has higher assembly reliability and assembly operability.
(5) FPC can be installed in three connections.
(6) FPC is good for heat diffusion.
(7) Low cost.
(8) Continuity of processing.

Multilayer flex circuits are widely used in drones, smart wear, smart home, Bluetooth, automotive, aviation instrumentation, industrial control, medical equipment, robots, mobile phones, tablet LCD monitors, projectors, car navigation, digital cameras, security, printers and other terminal technology product.

FPC will continue to innovate in four aspects in the future, mainly in:
1, thickness. The thickness of the FPC must be more flexible and must be thinner;
2, folding resistance. Bending can be an inherent feature of FPC. The future FPC must have a stronger folding resistance, which must exceed 10,000 times. Of course, this requires a better substrate.
3. Price. At this stage, the price of FPC is much higher than that of PCB. If the price of FPC comes down, the market will certainly be much broader.
4. Process level. In order to meet various requirements, the FPC process must be upgraded, and the minimum aperture, minimum line width/line spacing must meet higher requirements.

PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for custom pcb china, just contact us!

Metal Core PCB(2020年02月19日)

pcbsky — 2020-02-14T18:41:59+0900

https://www.pcbsky.com/pcb-fabrication/metal-core-pcb/

Custom low cost metal core pcb from professional pcb manufacturer china shenzhen, PCBSKY provides best service metal core pcb prototype.
MCPCB, Metal Core PCB, thermal PCB - whichever name you prefer, they are all boards which use a base metal material as the heat spreader portion of the circuit board.
Base metals in the MCPCB fabrication are used as an alternative to FR4 or CEM3 boards for the ability to dissipate heat away from critical board components and to less crucial areas such as the metal heatsink backing or metallic core.

Metal Core PCB Materials and Thickness
The metal core of the thermal PCB can be aluminum (aluminum core PCB), copper (copper core PCB or a heavy copper PCB) or a mixture of special alloys. The most common is an aluminum core PCB.
The thickness of metal cores in PCB base plates is typically 30 mil - 125 mil, but thicker and thinner plates are possible.
MCPCB copper foil thickness can be 1 - 10 oz.

Advantages of MCPCB
MCPCBs can be advantageous to use for their ability to integrate a dielectric polymer layer with a high thermal conductivity for a lower thermal resistance.
Metal core PCBs transfer heat 8 to 9 times faster than FR4 PCBs. MCPCB laminates dissipate heat, keeping heat generating components cooler which results in increased performance and life.
Among all Metal core PCBs (MCPCBs, known for their ability to provide effective thermal dissipation for electronic products), Aluminum core PCB is the most common type - the base material consists of aluminum core with standard FR4. It features a thermal clad layer that dissipates heat in a highly efficient manner, while cooling components and increasing the overall performance of the products. Currently, Aluminum Base PCBs is regarded as the solution to high power and tight tolerance applications.

Pcbsky MCPCB Manufacture
Pcbsky has been offering MCPCBs manufacturing services for over six years. Our full feature metal core pcb making capabilities and value-added options including Free DFM Check allow you to get high-quality metal core PCBs done within budget. metal core PCBs printed by us are widely used for LED lighting, power equipment and automotive systems.
Not only our metal core pcb fabrication is provided with professional levels of development and production, but also we may provide comprehensive technical support for area of semiconductor lighting from encapsulation to heat conducting and radiating of lamps and lanterns. We may assist, participate and develop independently radiating and heat conductive plan for you according to your needs.

We are reliable mcpcb suppliers, and welcome to custom MCPCB from metal core pcb manufacturer at very competitive factory mcpcb price. PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for pcb manufacturer china shenzhen, just contact us!

Impedance Control PCB(2020年02月18日)

pcbsky — 2020-02-14T18:41:25+0900

https://www.pcbsky.com/pcb-fabrication/impedance-control-pcb.html

What is impedance control in pcb?

High Speed PCB with Impedance Control
Impedance Control PCB refers to the PCB that needs impedance control. Impedance control refers to the “resistance” generated by a certain circuit layer under its high-frequency signal to its reference layer, and its signal must be controlled within the rated range to ensure that the signal is not distorted during transmission. Impedance control is to make each part of the system have the same impedance value, that is, impedance matching.
Most high speed circuit boards currently have impedance control requirements. Therefore, it has also been said that a PCB board that does not have impedance control cannot be called a high speed PCB.

Definition & Types of Characteristic Impedance
At a certain frequency, the resistance of a high frequency signal or electromagnetic wave in the propagation of a signal line of an electronic device relative to a certain reference layer is called a characteristic impedance, which is an electrical impedance, an inductance, resistance, capacitance resistance... a vector sum.
The characteristic impedances commonly found on Impedance Control PCBs are: single-ended impedance, differential impedance, and coplanar impedance.
Single-ended impedance: refers to the impedance measured by a single signal line.
Differential Impedance: Refers to the impedance tested in two equal-width, equally spaced transmission lines for differential driving.
Coplanar impedance: The impedance measured when the signal line is transmitted between GND / VCC (signal line to its GND / VCC spacing is equal).

Factors Affecting Impedance
W --- line width / line width increase impedance becomes smaller, distance increases impedance increases;
H --- insulation thickness thickness increases impedance;
T --- copper thick copper thickness increases impedance;
H1 --- green ink thick thickness increases impedance becomes smaller;
Er --- dielectric constant reference layer DK value increases, impedance decreases;
Undercut --- W1-W undercut increases and the impedance becomes larger.

The impedance linewidth tolerance of our Impedance Control in PCB is normally controlled by ± 10%, and the minimum can be controlled to ±8%.In order to reduce the production cost, if the signal requires impedance deviation of ±10%, then we do not need to require the board factory to produce according to ±8%, resulting in unnecessary cost increase.

PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for pcb fabrication china, Welcome to custom Impedance Control High Speed PCB from PCB MANUFACTURER CHINA.

High Tg PCB(2020年02月17日)

pcbsky — 2020-02-14T18:41:00+0900

https://www.pcbsky.com/pcb-fabrication/high-tg-pcb.html

What is High Tg PCB
When the temperature rises to a certain area, the substrate will change from "glass state" to "rubber state", and the temperature at this time is called the glass transition temperature (Tg) of the plate. That is, Tg is the highest temperature (°C) at which the substrate remains rigid. That is to say, the ordinary PCB substrate material not only softens, deforms, melts, etc. at high temperatures, but also exhibits a sharp drop in mechanical and electrical properties.
The general Tg of the PCB is 130 degrees or more, the high Tg is generally greater than tg170 pcb, and the medium Tg is greater than about tg 150 degrees.

A PCB board with a typical Tg ≥ 170 ° C is called a high Tg board.

The higher the pcb tg value, the more resistant the sheet is to deformation and the better its dimensional stability. The substrate material of IPC-4101B (2006) standard epoxy/E type fiberglass cloth is divided into three grades according to the height of Tg (commonly known as low, medium and high Tg). It is an important property in the resin of the sheet. It refers to the gradual change of the physical properties of the resin due to the gradual increase of the temperature. It is converted into a viscous state by the amorphous or partially crystalline hard and brittle nature at room temperature, such as glass. The critical temperature is very high and soft in another state like rubber.

Features of High Tg PCB
The Tg of the substrate is improved, and the heat resistance, moisture resistance, chemical resistance, and stability resistance of the circuit board are improved. The higher the TG value, the better the temperature resistance of the sheet, especially in the lead-free process, the High Tg PCB application is more.

With the rapid development of the electronics industry, especially the electronic products represented by computers, the development of high functionality and high multi-layer requires the higher heat resistance of PCB substrate materials as an important guarantee. The emergence and development of high-density mounting technology represented by SMT and CMT makes PCBs more and more inseparable from the high heat resistance of substrates in terms of small aperture, fine wiring and thinning. Therefore, the difference between general FR-4 and high Tg FR-4 is that in the hot state, especially under heat absorption after moisture absorption, the mechanical strength, dimensional stability, adhesion, water absorption, thermal decomposition, There are differences in various conditions such as thermal expansion, and High Tg PCB is significantly better than ordinary PCB substrate materials. In recent years, customers who demand the production of High Tg PCB have increased year by year.

PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for pcb shenzhen, Welcome to custom high tg PCB directly from Shenzhen PCB Manufacturer at low cost.

High Frequency PCB(2020年02月16日)

pcbsky — 2020-02-14T18:40:33+0900

https://www.pcbsky.com/pcb-fabrication/high-frequency-pcb/

Custom high frequency pcb from professional pcb manufacturer china shenzhen with factory price in low cost.
The high frequency of electronic equipment is a development trend, especially in the development of wireless networks and satellite communications, the high-speed and high-frequency information products, and the standardization of voice, video and data for wireless transmissions with large capacity and fast communication products. A new generation of products that require high-frequency substrates. High Frequency PCB, HF PCB Types as below:

ROGERS PCB
PTFE TEFLON PCB
FR4+HIGH FREQUENCY PCB

High Frequency PCB Features
1, the impedance control requirements are more stringent, the relative line width control is very strict, the general tolerance is about 2%.
2. Due to the special plate, the adhesion of PTH to copper is not high. It is usually necessary to roughen the via and surface by means of plasma processing equipment to increase the adhesion of PTH hole copper and solder resist ink.
3, can not be used before the resistance welding, otherwise the adhesion will be very poor, can only be roughened with micro-etching water.
4. Most of the plates are made of PTFE. There are many burrs formed by ordinary milling cutters, and special milling cutters are required.
5. The high-frequency PCB is a special circuit board with a high electromagnetic frequency. Generally, the high frequency can be defined as a frequency above 1 GHz.
Its physical properties, precision, and technical parameters are very high, and it is often used in automotive anti-collision systems, satellite systems, radio systems and other fields.
In general terms, the PCB industry considers an RF circuit board to be any high frequency PCB that operates above 100MHz. Within the radio frequency class, anything above 2GHz is a Microwave PCB.

A High Frequency PCB Requires the Use of Specialized Materials
Special materials are required to achieve the high frequency provided by this type of printed circuit board - any changes in the Er value of these materials can affect the impedance of the board. Many PCB designers turn to Rogers 4450f dielectric material for its lower dielectric loss, reduced signal loss, lower cost of circuit fabrication and better suitability for fast-turnaround prototyping applications.
Apart from choosing the appropriate PCB material and determining the correct the value of the Er, designers should take parameter such as conductor width and spacing, substrate constant into consideration. These parameters must be exactly specified and implemented with the highest level of process control.

High Frequency PCB by PCBSky
We're a High Frequency PCB Manufacturer That Takes the Time to Assess Your Needs
PCBSky is an experienced full service PCB manufacturer who provides a reliable, superior-performing high-frequency PCB fabrication services.
We manufacture high-frequency PCBs with frequency typically in the range from 500MHz to 2GHz. The following table shows some of our common-use materials for High-Frequency PCBs manufacturing.

Discuss your High Frequency PCB Project Today
For High Frequency PCB manufacturing price, please send your PCB file (Gerber format preferred | Preorder Checklist) & requirements using this contact form, we'll quote at quickest speed.
Wanna know our customizable high-frequency PCB solutions? Can't determine which PCB material is the best choice for your project? Require advanced specs which are not listed in the above table? Reach our engineers using the same contact form for practical solutions.

Choosing and Combining Your Materials
Many RF applications are multi-layer affairs and the properties of the board can be fine-tuned by mixing and matching different materials to strengthen the balance of electrical performance, thermal properties and cost.
Composite boards, often referred to as hybrid multi-layer PCBs, can be difficult to build because many layer-to-layer interactions must be taken into account for multiple steps along the PCB manufacturing process. Additional challenges also arise, such as a mixed-signal PCB design that combines analogue and digital components, generating a list of variables that becomes quite large. With so many current applications and emerging markets for RF, the future is bright indeed.
However, RF boards are clearly complex and have many variables that must be addressed and exhibit unusual behavior that is not shared with their lower-frequency cousins. While it may be challenging, it’s not “black magic.”
If you are seeking to manufacture RF PCBs and have questions relating to manufacturing or need a quote, PCBSky, as a professional high frequency PCB company, is here to help with their extensive engineering expertise.

PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for custom pcb fabrication, just contact us!

HDI PCB(2020年02月15日)

pcbsky — 2020-02-14T18:40:06+0900

https://www.pcbsky.com/pcb-fabrication/hdi-pcb.html

Are you looking for a reliable hdi pcb factory?
HDI PCBs, one of the fastest growing technologies in PCBs, are now available at PCBSky. HDI PCBs contain blind and/or buried vias and often contain microvias of .006 or less in diameter. They have a higher circuitry density than traditional circuit boards.

There are 6 different types of HDI PCBs, through vias from surface to surface, with buried vias and through vias, two or more HDI layer with through vias, passive substrate with no electrical connection, coreless construction using layer pairs and alternate constructions of coreless constructions using layer pairs.

HDI any-layer printed circuit boards are the next technological enhancement of HDI microvia printed circuit boards: all the electrical connections between the individual layers consist of laser-drilled microvias. The main advantage of this technology is that all the layers can be freely interconnected. To produce these circuit boards, PCBSky uses laser-drilled microvias electroplated with copper.

Special Technologies Used with HDI Any-layer Printed Circuit Boards
Edge plating for shielding and ground connection
Minimum track width and spacing in mass production around 40μm
Stacked microvias (plated copper or filled with conductive paste)
Cavities, countersunk holes or depth milling
Solder resist in black, blue, green, etc.
Low-halogen material in standard and high Tg range
Low-DK Material for Mobile Devices
All recognised printed circuit board industry surfaces available
HDI PCB Technology Sheet

PCBSky HDI PCB Structures
1. 1+N+1 - PCBs contain 1 "build-up" of high-density interconnection layers.
2. i+N+i (i≥2) - PCBs contain 2 or more "build-up" of high density interconnection layers. Microvias on different layers can be staggered or stacked.
3. Copper filled stacked microvia structures are commonly seen in challenging designs.
4. Any Layer HDI - All the layers of a PCB are high density interconnection layers which allows the conductors on any layer of the PCB to be interconnected freely with copper filled stacked microvia structures ("any layer via"). This provides a reliable interconnect solution for highly complex large pin-count devices, such as CPU and GPU chips utilized on handheld and mobile devices.

PCBSky HDI PCB Capabilities: Microvias PCB
A microvia maintains a laser drilled diameter of typically 0.006" (150µm), 0.005" (125µm), or 0.004" (100µm), which are optically aligned and require a pad diameter typically 0.012" (300µm), 0.010" (250µm), or 0.008" (200µm), allowing additional routing density. Microvias can be via-in-pad, offset, staggered or stacked, non-conductive filled and copper plated over the top or solid copper filled or plated. Microvias add value when routing out of fine pitch BGAs such as 0.8 mm pitch devices and below.
Additionally, microvias add value when routing out of a 0.5 mm pitch device where staggered microvias can be used, however, routing micro-BGAs such as 0.4 mm, 0.3 mm, or 0.25 mm pitch device, requires the use of Stacked MicroVias using an inverted pyramid routing technique.

Any PCB Layer HDI
1. Multilayer copper filled stacked micro via structure
2. 3/3 mil line/space
4/8 mil laser via capture pad size

Material Options
High temperature FR4
Halogen - Free

PCBSky is a professional PCB/FPC/SMT Manufacturer in China, specializing in Quick Turn PCB & Prototypes. If you are looking for custom circuit board china, Welcome to order hdi pcb fabrication at a very competitive HDI PCB price.

Hard Gold PCB(2020年02月14日)

pcbsky — 2020-02-14T18:37:32+0900

https://www.pcbsky.com/pcb-fabrication/hard-gold-pcb.html

Hard Gold PCB, immersion gold pcb, is to immerse the board in the plating tank and apply current to form a nickel-gold coating on the copper foil surface of the board. The electro-nickel gold is characterized by high hardness, wear resistance and oxidation resistance. Widely used in applications.

Introduction to Hard Gold PCB Technology:
1. Purpose and role: gold as a precious metal, has good weldability, oxidation resistance, corrosion resistance, small contact resistance, good wear resistance of the alloy and so on;

2. At present, the electroplating gold of the circuit board is mainly a citrate gold bath, which is widely used for its simple maintenance and simple and convenient operation;

3. Water gold content is controlled at about 1 gram / liter, PH value of about 4.5, temperature of 35 degrees, specific gravity of about 14 waves, current density of about 1ASD;

4. The main added drugs are acid-adjusted salt and basic-adjusted salt for adjusting pH value, conductive salt and gold-plated supplement additive for adjusting specific gravity, and gold salt;

5. In order to protect the gold cylinder, a citric acid dip tank should be added in front of the gold cylinder to effectively reduce the pollution of the gold cylinder and maintain the stability of the gold cylinder;

6. After the gold plate is electroplated, a pure water wash is used as the recovery water wash. At the same time, it can also be used to supplement the liquid level of the gold cylinder evaporation change. After the water is washed, it is connected with the second-stage counter current pure water wash. After the gold plate is washed, the alkali liquid is put into 10 g/shdter. To prevent oxidation of the gold plate;

7. Gold cylinder should use platinized titanium mesh as anode, generally stainless steel 316 is easy to dissolve, resulting in nickel-iron-chromium and other metal pollution gold cylinder, causing plating white, exposed plating, blackening and other defects;
8. Gold cylinder organic pollution application of carbon core continuous filtration, and supplemented with appropriate amount of gold plating additives.

What is Immersion Gold Plating:
Everyone chooses immersion gold plating, then what is immersion PCB gold plating, we say the whole plate gold plating, generally refers to "electroplating gold", "electroplated nickel gold plate", "electrolytic gold", "electric gold", "electric nickel plate", soft gold and the distinction between hard gold (usually hard gold is used for gold fingers), the principle is to dissolve nickel and gold (commonly known as gold salt) in chemical potion, dipping the board in the plating tank and turning on the current on the PCB. A nickel-gold plating layer is formed on the surface of the copper foil, and the nickel-gold alloy is widely used in electronic products because of its high hardness, wear resistance, and oxidation resistance.

Electric gold standard: nickel thickness 3-5um; gold thickness 0.25-1.5um; gold thickness minimum 3U''.

The Application of hard gold plating
Hard Gold PCB is widely used in intelligent AI, entertainment, educational robots or other industrial intelligent equipment to expand and contract, rich in change action, frequent separation and contact of local ports of the device, which requires good wear resistance of the PCB at the contact area of the port. Sexual and not easily oxidized.

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