[SOLVED] Tunnel diodes use and spice model

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OB_1

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Hi guys,
have anyone ever dealt with tunnel diodes? If yes I'd like to ask you few questions about that:

- where can I find this devices? I found some sellers, but no datasheet, and I found some datasheet but not the seller. I found some tunnel diodes on ebay, but in any case they all seem obsolete. So the next question:
- Are tunnel diodes still produced? Or are they being suppressed in the cost/benefit ratio by other devices? If tunnel diodes are still alive:
- Is there a way to simulate the behavior with spice simulator? Where could I find a spice model?

Thanks in advance!
OB_1
 

Thanks a lot ahmad, that's a starting point!
 

about simulation with spice if you use pspice you can select tunnel diode for example: 1N4393
 
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    OB_1

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Hi OB_1,

See this offer and write him to ask validity: **broken link removed**

IF you wish to use such diode at frequencies under say 100 MHz then I suggest using the so called Lambda diode because you can actually assemble a Lambda diode you yourself from two JFETs (from a P and an N channel type) or from an N channel JFET and a PNP transistor because a P channel JFET is becoming also obsolote...:shock: The difference between a Lambda and a real tunnel diode is in the forward bias voltage and current, apart from the operational frequency limit.

Just found this manufacturer for tunnel diodes: http://www.aeroflex.com/ams/metelics/micro-metelics-prods-TD-MBD.cfm

Regading a model in Spice: **broken link removed**

unkarc
 
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    OB_1

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ahmad1954 said:
about simulation with spice if you use pspice you can select tunnel diode for example: 1N4393
Click to expand...

Again, thanks for the hint!!

- - - Updated - - -


Dear unkarc,
thank you very very much for the very useful suggestions. I'll try with the lambda diode first, and perhaps order some discrete tunnel diodes.
Bye!
OB_1
 

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