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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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SMD diodes marking "2U 80" and "27 9E", what are they ?
Hi,
I have a SPSU board with two shorted SMD diodes : +--+ |2U| |80| +--+ and : +--+ |27| |9E| +--+ What are these diodes ? The "2" is not a "Z" (checked that carefully). Also, on the board there another "27 9E" with Vf=0,59V on my multimeter. No zener effect up to Vr=27V at least. Both are close to big mosfets. Do you know their references ? Cheers, -- cLx |
#2
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SMD diodes marking "2U 80" and "27 9E", what are they ?
On Fri, 26 Jul 2013 12:09:35 +0200, cLx
wrote: Hi, I have a SPSU board with two shorted SMD diodes : +--+ |2U| |80| +--+ and : +--+ |27| |9E| +--+ What are these diodes ? The "2" is not a "Z" (checked that carefully). Also, on the board there another "27 9E" with Vf=0,59V on my multimeter. No zener effect up to Vr=27V at least. Both are close to big mosfets. Do you know their references ? Cheers, If they were zeners, then convention from such vendors as Central would make 27 a 3V6 zener, and 2U an 18V zener. You don't mention body size. Would make any search rather tedious.. RL |
#3
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SMD diodes marking "2U 80" and "27 9E", what are they ?
On 28/07/2013 06:51, legg wrote:
On Fri, 26 Jul 2013 12:09:35 +0200, cLx wrote: Hi, I have a SPSU board with two shorted SMD diodes : +--+ |2U| |80| +--+ and : +--+ |27| |9E| +--+ What are these diodes ? The "2" is not a "Z" (checked that carefully). Also, on the board there another "27 9E" with Vf=0,59V on my multimeter. No zener effect up to Vr=27V at least. Both are close to big mosfets. Do you know their references ? Cheers, If they were zeners, then convention from such vendors as Central would make 27 a 3V6 zener, and 2U an 18V zener. You don't mention body size. Would make any search rather tedious.. RL Hi. Diodes dimensions are 4.27 x 2.35 x 1.94 mm... |
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