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Old 25th March 2003, 04:56 PM   #21
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I would try the TO-3BPL case, otherwise known as the TO-264. (If you're not doing MOSFETs.) On Semiconductor (formerly Motorola) makes an NPN-PNP Complimentary bi-polar pair under the part numners MJL1302A and MJL2381A. Both have a 200Vce breakdown, and an Hfe of ~45, with an Ft of 30MHz. SWEET!
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Old 25th March 2003, 08:22 PM   #22
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Quote:
Originally posted by Sch3mat1c
...Except tubes glowing in their All-Mighty (see God Of Triodes ) Greatness.
Tim
...Except purple-blue plasma flames

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Old 26th March 2003, 11:05 AM   #23
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--TO-3 or TO-247?

What is a good rule of thumb
for determining how many TO-3's
you need vs. TO-247 when paralleling
output stages.

Example,

suppose a design calls for 8
TO-247 pa

You'd have to do a SOA analysis, TO247 transistors with teh same size die a TO3 will be derated more, and the SOA will vary too much between different types of devices to generalize.

Hope that helps,
Lukas
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Old 26th March 2003, 02:36 PM   #24
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Just to clarify, a TO-264 is like a Super-sized TO-247 , using the same footprint.
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