[time-nuts] HP5065A Step Recovery Diode, what part#?

Joseph Gwinn joegwinn at comcast.net
Tue Aug 28 10:04:18 EDT 2018


On Mon, 27 Aug 2018 22:59:51 -0400, time-nuts-request at lists.febo.com 
wrote:

> ------------------------------
> 
> Message: 10
> Date: Mon, 27 Aug 2018 22:35:53 -0400
> From: paul swed <paulswedb at gmail.com>
> To: Discussion of precise time and frequency measurement
> 	<time-nuts at lists.febo.com>
> Subject: Re: [time-nuts] HP5065A Step Recovery Diode, what part#?
> Message-ID:
> 	<CAD2JfAgFyZEvGm0sMwdOAMvc5Rvh1yvD=7OuRv=Fu5w-Rt1GTg at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
> 
> Dan
> I missed the fact that you hacked a smt srd in. It was Eds post that caught
> my attention. That hack is worth sharing the details with time-nuts. I
> didn't even know you could get SRDs today.

MACOM still makes SRDs, and they may have replacements of the original 
HP parts.

.<https://www.macom.com/products/diodes/multiplier-step-recovery-diodes>

Joe Gwinn


> Regards
> Paul
> WB8TSL
> 
> On Mon, Aug 27, 2018 at 8:03 PM, ed breya <eb at telight.com> wrote:
> 
>> I forgot to mention:
>> 
>> If you've been diagnosing by swapping parts, be aware that changing the A3
>> is the same as changing the SRD - they won't necessarily match anymore, so
>> would need adjustment.
>> 
>> Maybe your original SRD was just fine, but the whole set needed
>> adjustment. Who knows what may have been tweaked or mis-tweaked by
>> individuals working on it previously. If the original SRD is intact, just
>> check to see if it's still a diode (should look the same as a regular Si
>> diode, with maybe a little higher forward voltage drop). If so, it's
>> probably OK and can be returned to service.
>> 
>> 
>> Ed
>> 
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> End of time-nuts Digest, Vol 169, Issue 36
> ******************************************



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