Heat Sink for "ATV" transistor case / package?

. This is also close to an "FTR" case, if that helps.

:An ATV package diagram is at http://207.234.249.73/mwd/atv_package.gif : :Who makes a heat sink for the "ATV" transistor package or equivalent? : :Or is there another package / case style that's equivalent to the ATV? : :Thanks. : :William E. Miller, AS-EET : snipped-for-privacy@usa.net ? IN

What makes you think there would be a heat sink designed for the ATV package? It is just a proprietary plastic transistor package devised by ROHM for higher power devices than would normally be housed in a typical TO92 or TO 226 package.

Other manufacturers such as Zetex have proprietary outlines eg. E-line

It is difficult to imagine how they can get these devices to handle continuous currents of 5A or more in a plastic package smaller than a TO92 without a heatsink, but they do eg.

Since the ATV package doesn't have a mounting tab or hole you can bet your life there is no heatsink made for it. Consequently, you will have to fabricate some method of clamping it to a suitable heatsink if it is required to dissipate more heat than it is designed to do.

Who makes a heat sink for the "ATV" transistor package or equivalent?

Or is there another package / case style that's equivalent to the ATV?

Thanks.

William E. Miller, AS-EET snipped-for-privacy@usa.net ? IN

Most likely a spring clip type heat sink. or heatink clamp like shown below (kool clips, thermal clips)

A more apt question would be:

Is there an electrical equivalent to pnxxxxx in a package with better thermal ratings or heat-sinking capability?

What part number are you dealing with?

RL

I would say there's unlikely to be a heatsink for a part like that. It would be better to use a more suitable rated part.

Graham