Clamps Basic Information

We offer two types of hockey puk clamps for mounting hockey puk semiconductors to heat sinks. Bar Clamps are used for double sided cooling applications. They have a stack of preloaded Belleville springs which guarantees the perpendicularity of the clamping force. An indicator washer on the spring guide indicates when the correct clamping force is achieved. Box clamps are used for single sided cooling applications. They use internal Belleville springs and the proper clamping force is achieved when four corner bolts are tightened and the box clamp housing comes in contact with the heat sink.

Our clamp configuration tool will assist with choosing the correct clamp for your application based on the size and thickness of the disc semiconductor, necessary clamping force and total heat sink thickness.

Clamp Selection

The choice of the clamp suitable for each different application can be made according to three main parameters. These parameters will help you choose between heat sink clamps, SCR clamps, diode clamps, rectifier clamps, thyristor clamps and other hockey puk clamps.

• Type of semiconductor (diameter and thickness)
• Requested clamping force
• Total clamping thickness (puk + heatsink web thickness)