Products for USB Sensing and Control
Products for USB Sensing and Control


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
+1 403 282-7335

Small Heatsink for SSR

ID: 3955_0
Recommended for new designs: Phidgets Inc. is not the original manufacturer for this product, but we intend to sell it (or a similar replacement with a compatible form, fit and function) for as long as it is available from the supplier.

Use this heatsink to run one SSR at full current switching capacity without overheating.


Quantity Available: 460

Qty Price
5 $5.28
10 $5.06

Medium and high current (>5A) SSRs can generate a lot of heat during operation. Failure to manage the generation of heat by the SSR during switching may damage the SSR and lead to product failure. When using an SSR this problem of heat dissipation must be managed. It is very important to select an adequate heatsink if you plan on using your SSR at its maximum specifications. To assist with heat dissipation, a thermal pad (packaged with all "hockey puck" type SSRs we sell) should be used between the relay and the heatsink. For very high performance applications, air cooling may also be necessary.

This heatsink is designed to slide onto standard 35mm O-type DIN rail.

Comes Packaged with

  • Mounting Screws (2)


The mounting holes on this heatsink are designed to match the mounting holes on a standard "Hockey Puck" style relay. The screws needed to attach the relay are included with the heatsink. Here's a list of relays we sell that can fit onto this heatsink:

Product Electrical Properties
Image Part Number Price Control Voltage Min Control Voltage Max Load Voltage Min (DC) Load Voltage Max (DC) Load Voltage Max (AC)
3950_0 $20.00 4 V DC 32 V DC 30 V DC
3951_0 $25.00 4 V DC 32 V DC 50 V DC
3952_0 $30.00 4 V DC 32 V DC 30 V DC
3953_1 $15.00 4 V DC 32 V DC 280 V AC
3958_0 $45.00 3 V DC 32 V DC 5 V DC 120 V DC
3962_0 $15.00 4 V DC 32 V DC 280 V AC

DIN Rail

This heatsink can slide onto standard 35mm O-type DIN rail to allow for easy wall mounting. You can find some here:

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Product Specifications

Manufacturer Part Number HF92B-80
Thermal Resistance 2.4 K/W
Screw Thread Size M4x0.7
Customs Information
Canadian HS Export Code 7604.29.00
American HTS Import Code 7604.29.30.60
Country of Origin CN (China)


Here are all of our SSR Heatsinks:

Product Heatsink
Image Part Number Price Thermal Resistance
3955_0 $5.50 2.4 K/W
3961_0 $18.00