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# Maximum gate voltage on a triac

## Maximum gate voltage on a triac

(OP)
I have a TIC226D triac. I see maximum gate current on it's datasheet (50mA, if I'm not mistaken), but I need to know the maximum allowed tension.

Is there a way ?

### RE: Maximum gate voltage on a triac

A triac gate is mostly resistive. Just measure the resistance and multibly with maximum allowed current.

But, since there is a current limit, just keep the gate current at a level safely below that limit. And, please, be aware that there are different specs for operation in the different quadrants with 3rd quadrant being the most demanding.

Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

### RE: Maximum gate voltage on a triac

(OP)
Thank you, Skogsgurra

I'm not confident of the values I found

TIC226D: 63 Ohm (possibly, but unlikely damaged triac)
TIC226M: 630 Ohm (never used) (ten times more resistive. Not a typo)
Illegible power triac: 32 Ohm

Could someone back them up ?

Adding to Skogsgurra's answer: the resistance must be measured between MT1 and gate, ignoring MT2

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