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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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23rd Nov 2018, 7:39 pm
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#1 |
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Retired Dormant Member
Join Date: Jun 2011
Location: Crew Green, Powys, Wales, UK.
Posts: 68
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TRW P19704 RF power transistor
Hi Guys, Does anybody have any technical info on a TRW P19704 RF power transistor? I have a Marconi wide band amplifier with a faulty one and need to replace with the same or equivalent. I can find no information at all. I suspect I will need to replace 3 more of the same type (if equivalents) as they need to be fairly well matched.
Thanks, Robert |
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23rd Nov 2018, 8:05 pm
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#2 |
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Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,869
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Re: TRW P19704 RF power transistor
I've just pulled the TRW RF power transistor data book off my shelf for the first time in about 30 years!
No such number. could you have misread PT9704? 30W 28V 400MHz 280SOE package BVebo 4v 2 Ie 1mA BVces 55v @ IC 20mA BVceo 30v @ Ic = 50mA Hfe 10-150 @Ic 100mA 30W @ 5W drive 28v 400MHz >60% efficiency Inf VSWR tolerant Psat 35WCcb 35pf @ 28v IC 5A 2.5 C/Watt -65 to +200C Pd 70W David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
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23rd Nov 2018, 8:23 pm
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#3 |
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Retired Dormant Member
Join Date: Jun 2011
Location: Crew Green, Powys, Wales, UK.
Posts: 68
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Re: TRW P19704 RF power transistor
Thanks David!!!!!
Your right, the "1" is a "T".... FAB! All I need is to match it with some thing similar but ....eek a 280SOE package Robert |
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