Immersion nickel / gold is a thick layer of nickel-gold alloy with good electrical properties and can protect the PCB for a long time. Unlike OSP PCB Board, which is only used as a rust-proof barrier layer, it can be useful and achieve good electrical properties during long-term use of the PCB. In addition, it also has environmental tolerance not available in other surface treatment processes.
The immersion gold board is a pcb board produced by the immersion gold process.
Such immersion gold boards are mostly multilayer PCB boards. The immersion gold process is to deposit a stable color on the surface of the printed circuit, good brightness, flat plating, and good solderability Nickel-gold plating, PCB can be used for a long time without oxidation problems.
It is mainly used on boards that have functional requirements for connection and long storage periods, such as the keypad area of a mobile phone, the edge connection area of a router housing, and the electrical contact area of a chip processor's elastic connection. Currently about 10% -20% of PCBs use the immersion nickel / gold process.
The general process is: de-acid cleaning-> micro-etching-> pre-immersion-> activation-> chemical nickel plating-> chemical immersion gold; there are 6 chemical tanks in the process, involving nearly a hundred Chemicals, the process is more complicated.
It is mainly used on boards that have functional requirements for connection and long storage periods, such as the keypad area of a mobile phone, the edge connection area of a router housing, and the electrical contact area of a chip processor's elastic connection. Currently about 10% -20% of PCBs use the immersion nickel / gold process.
PCB board has a variety of surface treatment methods, SPEEDAPCB is good at producing pcb boards with various surface treatment methods.
| PCB SIZE | 42 X 36mm=1PCS |
| BOARD TYPE | Double sided PCB |
| Number of Layers | 4 layers |
| Surface Mount Components | YES |
| Through Hole Components | YES |
| LAYER STACKUP | Copper ------- 35um(1 oz)+plate TOP layer |
| RO4350B 0.254mm | |
| Minimum Trace and Space: | 7.1 mil / 5 mil |
| Minimum / Maximum Holes: | 0.4 mm / 5.2 mm |
| Number of Different Holes: | 6 |
| Number of Drill Holes: | 41 |
| Number of Milled Slots: | 0 |
| Number of Internal Cutouts: | 3 |
| Impedance Control: | No |
| Glass Epoxy of board: | RO4350B Tg280ºC, er<3.48, Rogers Corp. |
| Final foil external: | 1.5 oz |
| Final foil internal: | N/A |
| Final height of PCB: | 0.3 mm ±0.1mm |
| Surface Finish | Immersion gold |
| Solder Mask Apply To: | TOP, 12micron Minimum |
| Solder Mask Color: | Green, PSR-2000GT600D, Taiyo Supplied. |
| Solder Mask Type: | LPSM |
| CONTOUR/CUTTING | Routing |
| Side of Component Legend | TOP |
| Colour of Component Legend | White, IJR-4000 MW300, Taiyo brand |
| Manufacturer Name or Logo: | Marked on the board in a conductor and leged |
| FREE AREA | |
| VIA | Plated through hole(PTH), minimum size 0.4mm. |
| FLAMIBILITY RATING | UL 94-V0 Approval MIN. |
| Outline dimension: | 0.0059" |
| Board plating: | 0.0029" |
| Drill tolerance: | 0.002" |
| TEST | 100% Electrical Test |
| TYPE OF ARTWORK TO BE SUPPLIED | Email file, Gerber RS-274-X, PCBDOC etc |
| SERVICE AREA | Worldwide, Globally. |
