Found this on digkey.com
did search for 1n458a this came up there.
N9IWW
1N458AFS-ND
<http://us.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=436132&Row=50815&Site=US>
1N458A DIODE HI CONDUCTANCE 150V DO-35 Fairchild Semiconductor
Fast
Recovery 150 V 500mA DO-35 Bulk
0
0.01230
38000
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BILL LIEDTKE wrote:
> Message: 1
> Date: Thu, 29 Mar 2007 00:10:01 EDT
> From: Gudguyham@aol.com
> Subject: [Amps] Sb-200 question
> To: amps@contesting.com
> Message-ID: <d07.bb64169.333c9619@aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> Apparently diode part number 56-24 which is a 1N458 diode has gone south on
> my Sb-200. Was wondering if someone could tell me what this part does.
> What
> can be subbed for it? Or do I have to get the exact diode? Any help
> appreciated. Thanks 73 Lou
>
>
> Lou,
>
> Are you seriouis? You must immediately dispose of this amplifier! Send it
> to me and I will get rid of it for you. If you can diagnose that it's bad I
> can't believe you don't know what it does. Seriously, there is no diode made
> any longer that will work so best get rid of it now. Pack the tubes in a
> seperate box and sent the whole mess to me along with the Dentron.
>
>
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>
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