Definition
- Solderability
- Aluminum wire bonding
- Electric Contact Surface
- Multiple Reflows
Benefits
- A planar, solderable finish
- Good shelf life – Does not tarnish
- Precious metal electrical contact surface (1.5 million actuations)
- Al wire bondable
- Nickel strengthens the PTH – acts as a rivet
- Nickel barrier prevents copper dissolution during wave solder & rework
- EMI shield mounting surface
- Withstands multiple heat cycles well