Immersion Silver (ImAg) Multi-layer PCB Surface Finish
Immersion silver (ImAg) is a metallic coating of pure silver (0.1 to 0.4 μm), which acts as a preservative for the copper traces on a printed circuit board. It is a combination of 99% Ag metal with traces of organic material. With time, ImAg forms Sulfide Dendrites that cause a shorting problem. This problem can be avoided by applying a thin organic coat, which acts as a barrier.
An Immersion silver (ImAg) finish on a Multi-layer PCB is suitable for the applications that include flat surfaces like membrane switches, EMI shielding, aluminum wire bonding, and very fine traces.
Properties of Immersion Silver Surface Finish:
Shelf-life: 6 to 12 months
Offers good solderability
Due to its planarity (flatness), suitable for fine-pitch/BGA/Small components placement
Offers good solderability after exposure to various thermal cycles (more than 2)
Suitable for high-frequency applications
Limiting Properties of Immersion Silver Surface Finish:
Sensitive to handle and sensative to contaminants
Has a solder whiskering issue
Difficult for electric testing
Other news about S&L
- Celebrating the Establishment of SUNLYNN CIRCUITS(THAILAND)
- Good News! Sun&Lynn Circuits Co.,Ltd. is honored as one of the Top 100 Innovative Enterprises in Bao
- What Should You Know about Metal Core PCB?
- FPC supplier : the types of Flexible PCB
- PCB manufacturer China:Why PCB board snake line, what is it used for?
- What is Metal Core PCB and types of Metal Core PCB?
- Why are High frequency PCBs much more expensive than normal PCBs?
- Flexible PCB supplier China :When to use flexible PCB?
- Flexible PCB manufacturer:What Is Flex Soldering?
- What Is Automotive PCB? Why we use automotive PCB?
Your browsing history
- DJN awarded S&L for the Best Quality Performance of PCB supplier
- Flexible PCB supplier china : advantages and disadvantages
- FPC supplier:How To Clean The FPC After Etching
- FPC supplier : the types of Flexible PCB
- PCB factory china:PCB Soldering Steps
- Types of Single Layer PCB
- Sorting of Metal Core PCBs
- PCB manufacturer China How to choose which surface treatment for pcb
- FPC supplier:What is Impendance in PCB board?
- PCB manufacturer China:6 inspection methods for short circuit of PCB
A total of -comments【I want to comment】