Custom Green Fr4 HDI PCB Board / 10 Layer Pcb Black Solder Mask 7Mil BGA

10 Layer HDI PCB Board , Printed Circuit Board , Blind And Buried Holes , Black Solder Mask

PCB Specifications:

Layer Count: 10 Layer HDI PCB

Material: FR4, TG170

Board Thickness: 1.0MM

Min Hole: 0.1MM

Hole Stucture: L1-L2,L2-L3,L3-L4,L5-L6,L6-L7,L7-L8,L8-L9,L9-L10,L1-L3,L8-L10,L2-L4,L7-L9,L1-L10

Min Trace: 2.5/2.5Mil

BGA: 7Mil

Aspect Ratio: 10:1

Solder Mas: Black

Surface Treatment: ENIG

Application: 5G Fiber Module

Capabilities:

FAQ:

Question: How can you guarantee the quality of your products?

Answer: About electricty function, we will 100% test it through flying tester or fixture test. About the surface, we have IPQC and FQC and FQA to make sure the products with flaw do not flow to customer's side. We also do microsection and thermal shock to make sure the reliability of our products.

Question: What is the standard format you accept?

Answer: We accept standard gerber format file.

Question: Do you have MOQ requirements?

Answer: Because PCB is customized products, so we do have MOQ requirements. But the MOQ rquirement is not strict and it differs from case to case.

Question: What is the difference between your two factories?

Answer: The HuiZhou factory mainly produce sample and small batch pcbs. The JiangXi factory has more roboticized equipments, so it prefers big batch production.

Question: What is your shipping term?

Answer: EX WORK, FCA SHENZHEN, FOB SHENZHEN ,FOB HONGKONG, or FCA Customer's City, it depends on customers demand. But we prefer EX WORK and FCA SHENZHEN

Quesiont: What is ENIG?

Answer: ENIG (Electroless Nickel Immersion Gold) is a surface plating that is applied over the copper pads on a Printed Circuit Board to protect them from corrosion and other abnormalities. Initially, the copper pad is covered by a Nickel (Ni) layer followed by a thin immersion Gold (Au) layer. ENIG provides good oxidation resistance, excellent surface planarity and allows for easy soldering which results in excellent electrical performance of the PCB board.

ENIG is RoHS compliant is therefore one of the most used PCB surface finishes even though it is more complex and expensive when compared to other PCB plating process like HASL.

ENIG is a two-layer metallic coating – Nickle is the barrier to the copper pad and is also the materials to which the components are soldered. Gold on the other hand protects the Nickle during storage and also provides low contact resistance. Typical Nickle thickness varies from 4 – 7 µm and Gold thickness varies from 0.05 – 0 23 µm. ENIG requires a processing temperature of around 80 °C.

Advantages of ENIG Surface Finishes:

• It provides impressive wettability, surface planarity, coplanarity, and long shelf life (up to 12 months) to the PCB board since immersion gold has strong chemical properties.
• In ENIG, the nickel layer acts as a barrier and stops the interfusion between gold and copper. It also produces an intermetallic compound (IMC) Ni3Sn4 to provide good solderability after reacting with Tin.
• It has low contact resistance, high strength, reduces oxidation, and provides antifriction. Overall, it enhances circuit conductivity requirements.
• It provides good plating over the copper pads and via holes.
• Its excellent surface planarity allows the components to be soldered flat onto the pad, making it ideal for BGA pads and other fine-pitch components.
• ENIG complies with all RoHS requirements.

Limitations of ENIG Surface Finishes:

• ENIG is an expensive surface finish technology
• It has undesirable magnetic properties
• Not good for rework and makes PCB repair very difficult

Witgain Technology Ltd was established in 2007 in ShenZhen City. After over 10 years development, the company now posses two factories. One factory located in HuiZhou City which is near to ShenZhen. The other one locates in JiangXi Province. Marketing dept still locates in ShenZhen City.

We have about 300 employees in two factories and the monthly output is around 30000m2. Our marketing orientation is to make high difficult and special treatment pcb. Even though, we still accept normal 2-layer and multi-layer pcb orders. Our products cover simple double layer pcb, multi-layer pcb, HDI pcb, rigid-flex pcb, fpc, ceramic pcb, heavy gold/copper pcb etc. Wide product ranges and flexible order quantities allow us to satisfy most customer's demands. 

Quality and technology is what we value most and we will never stop improving our capabilities. Our customer's satisfication is always what we are seeking for.