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How to Buy the RF Varactors with Small Amount for Prototypin - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement

Post subject: How to buy the RF varactors with small amount for prototypin Posted: Wed May 16, 2007 11:28 pm


Joined: Tue Apr 03, 2007 12:52 pm
Posts: 3
Hi, everyone. I have a question about buying small amounts of RF varactors with a few pF ranges.

Actually I found that many manufacture websites such as Areoflex, MDT, infoneon, etc.

Should I directly contact the manufactors or the sales distributors? Do they like to provide small amounts of the varactor to students?

I am really not quite familiar with the buying procedure, and will appreciate any information about it.


Post subject: Posted: Thu May 17, 2007 12:00 am


Joined: Wed May 16, 2007 4:16 pm
Posts: 5
Getting RF parts in small quantities can be tough. There is no doubt. Generally, the suppliers want to sell to cellular phone companies, not students or small OEMs.

Usually, though, you can get them through distribution. Stick with Digikey and Mouser as they will sell small quantities. The big disties like Future will not usually break a reel for you, and yo don't want 3000.

Digikey sells Toshiba varactors (page 1090 of their latest catalog). Mouser sells Zetex varactors (page 379). The Zetex diodes are hyperabrupt, so they are good where large tunign ranges are needed.

The other option is to try and get the manufacturer to sample some parts to you. This is a hit or miss proposition. If it were me, I would try to find a way to make the Toshiba or Zetex parts work and order them from one of the catalog companies.

Steve Montgomery
The RF Troubleshooter

Posted  11/12/2012

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