Led Blinking use of PCR406

nick703 · Oct 30, 2013

i have a used for series led blinking using PCR406j . so is that other way to use instead of PCR406j to other transistor like BC547/8.

jayanth.devarayanadurga · Oct 30, 2013

I didn't find any PCF406j but there is PCR406j and it is a SCR. Post your circuit.

https://www.onsemi.com/pub_link/Collateral/C106-D.PDF

nick703 · Oct 30, 2013

i am sorry jayanth yes it is pcr406 j. and circuit is like below image

and below is the link

**broken link removed**

i think my scr is damaged so any other in real market SCR use to this circuit.

jayanth.devarayanadurga · Oct 30, 2013

You can use this. https://in.element14.com/littelfuse/s401e/scr-thyristor-1a-400v-to-92/dp/1685126

I think the cicruit is powered from 12V and the resistors after bridge and filter drop the voltage to 5V or less for the COB. Did you remove the SCR and tested? Maybe one output of COB driving the gate of SCR is dead.

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