kline@tuna.cso.uiuc.edu (Charley Kline) (09/18/89)
channel. The offending part is of course the triac, which is shorted. I could easily replace it, if I could find one. The part is labeled "TG25E40 7B SanRex JAPAN". I know it's a triac both from context in the circuit and by the fact that the terminals are labeled "T1", "T2", and "G". I need not only an equivalent triac with the same characteristics, but I need one with the same (odd) packaging: A plastic square 3/4 inch on a side, with three flat terminals protruding, bonded to a 1/16 inch metal plate the same size as the plastic but with triangular ears with a mounting hole in each. The things are all mounted by machine screws to one thick rectangular metal tube which the pack's cooling fan blows through. Kind of an interesting heat dissipation scheme, I thought. Connections are not soldered, but are made through open-barrel disconnects on the terminals of the triac. Apparently the manufacturer expected these to fail often. Can anyone help me track down a source for these parts? Help a non-profit community theater out: the local ripoff head band lighting and sound joint wants $40 apiece for these, and you can't just buy them; you have to make a service call and pay for their labor too. Thanks in advance! _____ Charley Kline, Assistant TD, Celebration Company at the Station Theater c-kline@uiuc.edu uunet!uiucuxc!kline (217) 333-3339
peg@psuecl.bitnet (09/21/89)
In article <1989Sep17.195512.4723@ux1.cso.uiuc.edu>, kline@tuna.cso.uiuc.edu (Charley Kline) writes: > One of the stage lighting dimmer packs at our little theater has a bad > "TG25E40 7B SanRex JAPAN". I know it's a triac both from context in sorry, couldn't find this one in my cross reference. anyone else? > I need one with the same (odd) packaging: A plastic square 3/4 inch on > a side, with three flat terminals protruding, bonded to a 1/16 inch > metal plate the same size as the plastic but with triangular ears with this is a common newer triac package. it is called a TO-3 Fastpack by at least one manufacturer. notice the base outline is just like a TO-3 transistor. > and sound joint wants $40 apiece for these, and you can't just buy Digi-key list quite a few triacs in this package made by Teccor. The most expensive is $13.40. I would suggest you contact Teccor, as they probably originated the triac you mention. I don't have their address, I believe they are in eastern Pennsylvania. Good luck--if I find the part # I'll get back to you. Paul
peg@psuecl.bitnet (09/21/89)
> "TG25E40 7B SanRex JAPAN". I know it's a triac both from context in
Back again! Looks like your part probably crosses to
Teccor:
Teccor Q4025P 400 volt, 25 amp
If that seems right, i.e. less than 400 volt supply (prob.) and a fuse
for less than 25 amps, I'd say go for it (but no guarantees!!). There
really aren't that many TO-3 pack triacs around, anyway.
Digikey: 1-800-digi-key part # Q4025P $9.55
Mouser: 1-800-34mouser # 519-Q4025P $8.99 $20 min.
Sure wish I could find Teccor's address. They are a good company.
Paulis813cs@pyr.gatech.EDU (Cris Simpson) (09/22/89)
In article <56185@psuecl.bitnet> peg@psuecl.bitnet writes: >In article <1989Sep17.195512.4723@ux1.cso.uiuc.edu>, kline@tuna.cso.uiuc.edu (Charley Kline) writes: >> One of the stage lighting dimmer packs at our little theater has a bad >> "TG25E40 7B SanRex JAPAN". I know it's a triac both from context in > Here's an U.S. Address for SanRex: SanRex Corp. Semiconductor Division 1615 Northern Blvd. Manhasset, NY 11030 (516) 365-3520 -- || Gee, do you think it'd help if I plugged in both ends of this cable? || Cris Simpson Computer Engineer VA Rehab R&D Center GATech Atlanta,GA is813cs@pyr.gatech.edu ...!{Almost Anywhere}!gatech!gitpyr!is813cs