Electronics > Beginners
Opinion about LCR T4 result on Triacs BT136
malagas_on_fire:
Hi.
I was testing some BT136 Triacs, that have been used in some projects, using two LCR T4 board, one from fleebay and other from local distribuitor . Both read fine some of the triacs, identifing properly its pins but some of them are being detected as NPN transistors ... Should i assume this ones are faulty or make a DUT with low power such as a light dimming circuit to check them out?
Edit forgot to place image of the LCR T4.
- LCR T4 H
- LCR T4
Both are powered by NIMH 9V battery same brand and model, not clear about charge status... but results are consistent in both units.
wraper:
It cannot provide necessary current to properly test less sensitive triacs.
malagas_on_fire:
--- Quote from: malagas_on_fire on June 16, 2019, 08:56:41 pm ---Hi.
I was testing some BT136 Triacs, that have been used in some projects, using two LCR T4 board, one from fleebay and other from local distribuitor . Both read fine some of the triacs, identifing properly its pins but some of them are being detected as NPN transistors ... Should i assume this ones are faulty or make a DUT with low power such as a light dimming circuit to check them out?
Edit forgot to place image of the LCR T4.
- LCR T4 H
- LCR T4
Both are powered by NIMH 9V battery same brand and model, not clear about charge status... but results are consistent in both units.
--- End quote ---
Here are more photos from the testing
malagas_on_fire:
--- Quote from: wraper on June 16, 2019, 09:03:08 pm ---It cannot provide necessary current to properly test less sensitive triacs.
--- End quote ---
Thanks for the reply. These are from the same manufacture NXP and same model :P So it cannot provide Igate to test them due to tolerances? About batteries they are outlet / stock off 9V NIMH battery from local market ...
Maybe i'll test them for real, but was expecting to avoid using these testers... cheapo testers...
wraper:
I guess these are without E suffix. Look into datasheet https://www.promelec.ru/pdf/BT136-600-NXP.pdf, max trigger current can easily be 7 times higher than typical value. Not to say these testers barely provide enough current to work even with typ. trigger current value. You should consider with a grain of salt anything such testers show.
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