Logisys Computer ATN-TP-02E Controller

[OmegaZero]

I was rereading the review on the ATN-TP-02 fan controller and came across this:

There is one quite significant difference: [Other] units had heatsinks for the transistors. This one does not. I would be very surprised if this device could in fact handle half the "rated power" unless it was operated in a cool, well-ventilated area -- which does not describe a computer case.

Would fitting some chipset heatsinks like these with thermal tape/adhesive solve this problem?

P.S. Does anyone know where to get the black one?