Author Topic: Varactor diode identification  (Read 1022 times)

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Offline harrimansatTopic starter

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Varactor diode identification
« on: March 12, 2020, 09:52:54 am »
Can any helpme to identify this diode type? Is a Tektronix 491 band C oscillator. Is a thread ceramic diode, 2mm aprox. 2 to 4 GHz, AFC.





 

Offline harrimansatTopic starter

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Re: Varactor diode identification
« Reply #1 on: March 15, 2020, 08:12:13 pm »
I attach photos diodes, one is a MA45601 ???
 

Offline TheMG

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Re: Varactor diode identification
« Reply #2 on: March 16, 2020, 12:29:31 am »
I wouldn't be all that surprised if this was a special part manufactured specifically for Tektronix for use in this application. It's not uncommon to find unobtainable parts like this in test gear.

If you can figure out roughly what the characteristics of the diodes should be, maybe you can find a modern equivalent. It would likely be SMD though so would require some fudging to get it retrofitted.
 


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