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Old 09-28-2019, 04:04 PM   #1
ageman
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Default Transistor identification

Hi I am looking for some help trying to identify an NPN transistor. It is marked TCDL 83-92. Please see attached photo. Any help would be appreciated
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Old 09-28-2019, 05:57 PM   #2
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Default Re: Transistor identification

maybe in house number .can you find a parts list for the unit ?
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Old 09-29-2019, 01:53 PM   #3
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Default Re: Transistor identification

Hi Petehall

no cannot find any information on the unit
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Old 09-29-2019, 03:26 PM   #4
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Default Re: Transistor identification

what is the unit ? are there anymore transistors same number ? if so you could at least work out the pin out .
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Old 09-29-2019, 08:17 PM   #5
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Default Re: Transistor identification

Hi pete hall. It is a led ballast unit for an emergency light. There is another transistor marked the same the pin out is as follows:1

pin No

1 Emitter
2 Collector
3 base
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Old 09-30-2019, 02:03 AM   #6
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Default Re: Transistor identification

do you have a component tester?
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Old 09-30-2019, 08:40 AM   #7
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Default Re: Transistor identification

Yes I have component tester. Details on the attached photo
Cheers Adrian
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Old 10-01-2019, 03:09 AM   #8
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Default Re: Transistor identification

so does the board contain anymore of those transistors - ones that work?
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Old 10-04-2019, 12:36 AM   #9
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Default Re: Transistor identification

Hi
yes this is the one that is shown on the component tester
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Old 10-04-2019, 02:49 AM   #10
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Default Re: Transistor identification

well if you know the spec, what's the problem?

or just stick an NPN ZTX seies in there - thoes can handle serious power.
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Old 10-04-2019, 03:04 AM   #11
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Default Re: Transistor identification

I was struggling to find something similar to replace it with.
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Old 10-04-2019, 04:11 PM   #12
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Default Re: Transistor identification

any idea on the kind of voltage it has to handle?

maybe a ztx450 would work - but you need to bend the leads a bit.
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