Top view:
Bottom view:
This is the first time I'll be using a heat-sink on a transistor. Right now these are just placed together.
Is the mounting correct?
Electronic – Is this the right way to mount a 2N3055 or any TO-3 form on a heat-sink
heatsink
Related Topic
- Electronic – How to attach a heat-sink to legacy ICs
- Electrical – The right gauge wire for a 12v parallel wiring to LEDS and heat sink
- Electronic – Leakage current to heat sink
- Electronic – Is a thermally conductive pad always useful between TO220 and heat-sink
- Electrical – What heat sink should I use for this 50W resistor
- Electronic – Heat sink on the bottom or on the side
- Electronic – Heat sink for the L298 stepper driver IC
Best Answer
TO-3 devices are typically mounted on the inside of any enclosing heat sink, rather than the outside. The way you have mounted it would prevent the part from being soldered directly onto a PCB.
Also, there are TO-3 specific heat sinks available, many of which would take less PCB real estate and typically provide better cooling than the one you have used. Heat sink selection involves required space, material (copper / aluminium / other), shape (flat / enclosing / raised), fin type, and expected thermal wattage to be cooled, as parameters.
Wrap-around design heat sinks also shield nearby components from the heat generated by your device, an added benefit.