Part Clamping: Vacuum vs. Mechanical

Part clamping is necessary to prevent misalignment and bond failure. The type and strength of clamping is integral to final assembly quality and performance.

Why is part clamping needed?

• A wire bond is made with ultrasonic vibration (often in combination with applied heat)
  • If the part is not held stationary relative to the tool, the bond either cannot be made or is poor quality
• Die bonds involve tool pressure to press the die onto the substrate
  • The substrate must be clamped on the tooling so that it does not shift relative to the part being placed, which could cause misalignment and bond failure