Patent ID: 9603258
Date: 2017-03-21
CPC Classifications: C23C,H05K

Claim:
1. A plating solution for use as a bath for electroless plating of palladium phosphorus on a metal, comprising: a palladium compound; a polyaminocarboxylic compound; hypophosphite or a derivative thereof; a pH adjustor; a complexing agent; and a reaction stabilizing mixture of phosphite at a concentration between 0.1 grams per liter (g/l) and 5 g/l, nitrate at a concentration between 0.1 g/l and 5 g/l, copper at a concentration between 0.1 milligrams per liter (mg/l) and 10 mg/l, bismuth at a concentration between 0.1 mg/l and 10 mg/l, and lead at a concentration between 0.1 mg/l and 5 mg/l.