Heated Stage for Thermosonic Wedge Bonding

Step 5 Other stuff for the heated stage

There are a few other details that I added to the heated stage. First, I added a grounding wire to the stage since the plastic insulates the heated stage from the grounded and static dissipating slider plate. I also added a cable strain relief block, and thermocouple attachment.

The attachment method for the thermocouple is now different from what is shown. The picture shows an eyelet holding the thermocouple in place, but it proved to be far too insulating. I have since replaced it with a small aluminum block with a small recess machined out. This provides a much better thermal contact to the heated block, dramatically improving the response time.

Lastly, I made a couple C-clamps for holding down modules. These can fit anywhere on the perimeter of the heated block.