John, Another source to consider is Protek. I only have a catalog, which doesn't list a website. They probably have one by now. Their phone number is 602-431-8101. They are located in Arizona, so they'll be a couple of hours behind Eastern Time. (Arizona sort of has thier own time zone, something about they don't buy into the daylight savings time theory). Their product line is similar to Semtech. Sometimes their part availability is better.
Best Regards, Chris Maxwell Design Engineer GN Nettest 6 Rhoads Drive, Building 4 Utica,NY 13502 email: [email protected] phone: 315-266-5128 fax: 315-797-8024 > -----Original Message----- > From: [email protected] [SMTP:[email protected]] > Sent: Monday, January 15, 2001 3:16 PM > To: [email protected]; [email protected] > Subject: Re: Transient Surge Suppressor > > In a message dated 1/15/01, John Juhasz writes: > > > > > I am trying to find a second-source for a TVS (Transient Voltage > Suppressor) > that I now use to meet the 61000-4-5 1.2/50us 1kV transient. > > > > > > Hi John: > > To finalize the requirements on the surge suppressor you need, you will > have > to determine the short circuit current of the surge, the required standoff > > voltage of the TVS device, the required clamping voltage, and the > allowable > capacitance. > > With these parameters in mind, some vendors to consider are Teccor > (http://www.teccor.com), ST Microelectronics (http://www.st.com), and > Semtech > (http://www.semtech.com). All of these vendors have some very nice > surface > mount "crowbar" type devices, some of which are in packages common to two > or > more vendors. For instance, the Teccor sidactor in the DO-214 package is > similar to some ST Microelectronics parts. > > If the surge is not very high energy, you could also consider using surge > suppressor zener diodes such as the devices in the SMA, SMB, and SMC > packages > that many manufacturers of discrete components make. Some of these can > handle up to 1500 watts for one millisecond. Motorola (now On > Semiconductor, > http://onsemi.com), General Semiconductor (http://www.gensemi.com), and > Central Semiconductor (http://www.centralsemi.com) all make these devices. > > Examples from the Motorola family of "600 watt" TVS diodes are the 1SMB > series and the P6SMB series. > > For high energy surges, I prefer the crowbar type devices such as teh > Teccor > sidactor. > > > > Joe Randolph > Telecom Design Consultant > Randolph Telecom, Inc. > 781-721-2848 > http://www.randolph-telecom.com ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
