Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!udel!rochester!kodak!ornitz From: ornitz@kodak.kodak.com (Barry Ornitz) Newsgroups: sci.electronics Subject: Re: Tunnel diodes...who makes 'em these days? Summary: Custom Components, Inc. Keywords: Esaki diodes, tunnel diodes, back diodes, gallium arsenide, germanium Message-ID: <1991Jun4.143224.16582@kodak.kodak.com> Date: 4 Jun 91 14:32:24 GMT References: Sender: Barry L. Ornitz Followup-To: sci.electronics Organization: Eastman Kodak Co, Rochester, NY Lines: 41 In article CDHWilli@exua.exeter.ac.uk (Charles Williams) writes: >Feel free to flame me if this is a FAQ, but tell me where the FAQ list is >first! Tunnel diodes are of interest to me because they should work okay at >low temperatures (ie 4K). However I'm having difficulty finding anywhere that >still makes/supplies them. Can anyone help with manufacturers please? This is not a frequently asked question. In fact, I asked something similar last year. A number of "older" net readers were familiar with tunnel diodes. A few kind souls even offered to open their "junque" boxes and give me a few! [My application was a business one, so I did not take them up on their offers. These folks were real gems; I was quite grateful for their offers.] Many of the younger folks in sci.electronics, those reared on micros, had never heard of tunnel diodes. In any event, I was only able to find one US manufacturer of tunnel diodes: Custom Components, Inc. They make a full line of germanium and gallium arsenide devices, from amplifier diodes, to detector diodes, to oscillator diodes, to switching diodes, to Schottky mixer diodes, to special microwave devices, and to conventional back diodes. They continue to supply all of the GE tunnel diode devices from the 1960's too. Their prices are not very different from the 1960's prices for tunnel diodes either. If you call them, ask for Charles Blaine for technical questions. Their full address is: Custom Components, Inc. P. O. Box 334 Lebanon, New Jersey, 08833 USA 201/534-6151 201/534-5625 (facsimile) Good luck with your project. Barry ----------------- | ___ ________ | Dr. Barry L. Ornitz WA4VZQ | | / / | | Eastman Kodak Company | | / / | | Eastman Chemical Company Research Laboratories | |< < K O D A K| | Process Instrumentation Research Laboratory | | \ \ | | P. O. Box 1972, Building 167B | |__\ \________| | Kingsport, TN 37662 615/229-4904 | | INTERNET: ornitz@kodak.com -----------------