When wire-bond pull strength comes in low, the instinct is to tune the bonder. More often, the ceiling was set weeks earlier in the plating specification, not at the bonder. Force, ultrasonic energy, ...

MIL-STD-883 Method 2011 sets the minimum pull strength for 25µm gold wire at 3 grams. An 8g population and a 12g population both pass. They do not predict the same things and treating them as equivale...