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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Hello all,
Just a warning that I was about to use a "2N5401" that is marked as follows: 2N 5401 CH13 and on the back, molded in a circle on the rear is K1 or K7 - the ones with the K7 have the lettering slightly rotated. On these devices, the middle pin is the COLLECTOR not the Base, as a genuine 2N5401 would be. These devices are on a paper tape strip of 20 I bought, and unfortunately I did not keep them in the original package, so I don't recall where they came from. Just thought I'd mention it here, as it could cause a lot of grief when repairing something. I did not bother to curve trace these to see if they otherwise meet spec, as I plan to trash them. I've since ordered some proper 2N5401's from Digikey. Regards, and Happy New Year Tim Schwartz Bristol Electronics |
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