[Elecraft] KPA500 fault at H44KW (no pwr high SWR)

[Wayne Burdick]

Sure, as long as the pinouts are the same, and the voltage and current ratings meet your switching requirements.

73,
Wayne
N6KR

On Nov 1, 2014, at 9:16 PM, wa9fvp <repair at willcoele.com> wrote:

> Here's a funny story.  Last week I ordered a KPA500.  Two days later a nearby
> Ham dropped off his KPA500 that failed.  His K3 was showing high SWR with no
> power.  He purchased his a year ago and didn't want to pay the expense of
> shipping it back to the factory.
> 
> I found a defective Q5 (see the TR switch schematic) on the Filter board. 
> Q5, an IPA50R399P is a 550v MOS Power Transistor.  My question is;  Q4 a
> similar device (an IRFSL9N60A) with almost identical specifications except
> it's a 600V, MOS transistor.  Can I use it as a replacement for an
> IPA50R399P?
> 
> Jack WA9FVP
> Willco Electronics
> 
> 
> 
> -----
> Jack WA9FVP
> 
> Sent from my TRS-80 :-)
> --
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