4 Layer PCB Hdi Printed Circuit Boards With Blind Buried Half Holes OSP+ENIG

4 Layer Printed Circuit Board With Blind And Buried Holes , Half Hole PCB , OSP+ENIG

4 Layer Printed Circuit Board With Blind And Buried Holes

PCB Specifications:

Layer Count: 4Layer Half Plated Hole PCB

Board Thickness: 1.0MM

Material: FR4

Copper Thickness: 1/H/H/1OZ

Min Hole: 0.1MM

Min Line: 3/3 Mil

BGA Size: 8Mil

Unit Size: 82*109.6MM/20UP

Hole: L1-L4, L2-L3, L3-L4, L1-L2

Min Distance Between Inner Layer Line to Holes: 5Mil

Solder Mask: Green

Surface Treatment: ENIG+OSP(OSP for BGA Pads)

Special Treatment: Half Plated Holes

Application: GPS Module

Capabilities:

FAQ:

Question: What is the most common quality issue for this kinf of pcb?

Answer: 1) Copper burr in half holes

2) Oxidation in half holes

Question: Why use surface treatment ENIG+OSP?

Answer: OSP has good tin solder paste feature . The BGA size is only 8mil. If use immersion gold, it's not good for tin solder paste. So we suggest customer to use ENIG+OSP. It can protect other pads well and meanwhile, it makes sure that the BGA pads have good tin solder paste feature.

Question: Is the cost for ENIG+OSP higher than ENIG?

Answer: Yes it is. But it won't make a big difference.

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.