Low capacitance diodes for microwave work

[neazoi]

Hello, I need to find types of diodes for microwave detection in SMD packages, so I guess these have to be low capacitance types.
I have tried 1N5712 (1.2pF), not in smd package though.

Any better types, available on ebay or other site?

 

[Ow@i$]

try this link you can set search filter according to your requirement

https://www.nxp.com/parametrics/30915/#/p=1,s=0,f=,c=,rpp=99999,fs=0,sc=,so=,es=

 

[biff44]

https://www.ebay.com/itm/Agilent-Av...356?pt=LH_DefaultDomain_0&hash=item22f8d4d734

 

[neazoi]

https://www.ebay.com/itm/Agilent-Av...356?pt=LH_DefaultDomain_0&hash=item22f8d4d734

How about the HP5082-3001?

0.25pf capacitance and 200V breakdown (Vbr) instead of the only 4V of the HSMS-8202 ?
Unless I am not correctly reading the datasheet...

 

[FvM]

As a first step, you'll need to clarify frequency and RF level requirements.

 

[neazoi]

As a first step, you'll need to clarify frequency and RF level requirements.

It is for this project http://neazoi.com/bridge/
I thought it would be better to use lower capacitance diodes to go into higher microwaves, although a nother PCB material like rogers may have to be used as well. I also consider the PCB design if it is good for microwaves but anyway...
Power requirements may be as high as possible in order to avoid usign attenuators but I would say RF signals of up to about +17dBm would be ok.

 

[biff44]

If it were me, I might want to use a signal sampler instead, as in
**broken link removed**
or
https://www.hittite.com/content/documents/data_sheet/hmc660lc4b.pdf