Aluminum Heat Sink Heatsink Module Cooler Fin for High Power Transistor Semiconductor Devices 3.93"(L) x 3.93"(W) x 0.7"(H) /100mm(L) x 100mm(W) x 18mm(H)

small and useful, won't use the extra space

Well so far I can push the TX over 15% with out any problems. Yes I know core temp is critical. Rated at 4.5 Amps, pushing to 6.5 Amps with no problems.Watch this space.

Nice straight edges and fairly flat bottom. In my application, I needed to put four screws through it from front to back. It drilled fairly easily, and I was able to cleanly break sections out of the fins by fatiguing the metal using a pair of narrow pliers. Combined with an 80mm fan, it significantly improved the thermal performance of my Peltier cooler project.

Good product, well made, reasonable price and does the job well. Good fast service, full marksJW - Hereford

Done the job great