Electronics > Repair
What is this Adhesive Thermal Pad?
<< < (4/4)
keenox:
Why drill from the ribbed side? Drill from the transistor side. You don't need a nut if you use the screw head to hold the transistor in place. Your heatsink seems thick enough to hold a screw no problems. Tapping aluminium is super easy. It might not even need tapping. The steel screw will do the self tapping.
The only problem I see with this approach is if the heatsink is connected to the ground plane on the PCB and needs to isolated from the transistor drain. Seen at least one case in the past.
Harry_22:

--- Quote from: keenox on November 16, 2024, 03:55:50 pm ---Why drill from the ribbed side? Drill from the transistor side. You don't need a nut if you use the screw head to hold the transistor in place. Your heatsink seems thick enough to hold a screw no problems. Tapping aluminium is super easy. It might not even need tapping. The steel screw will do the self tapping.
The only problem I see with this approach is if the heatsink is connected to the ground plane on the PCB and needs to isolated from the transistor drain. Seen at least one case in the past.

--- End quote ---
Yes the heatsink is isolated via the themal pad.
But why start mechanic work if the transistor is held in place with glue quite well. You saw it yourself.
And the device will be in complete order, almost like it came from the factory.

PS
I am sure that the thermal resistance will not change, the main rule here is not to leave air cavities.
All that remains is to dispel doubts that it will fly off when heated, and I have these doubts.
Harry_22:
I am very pleased with this superglue.
It holds stronger than the factory one. I could barely tear it off the thermal pad without breaking anything.
Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod