Double that on the 3051. 600 V Off state voltage - but the dv/dt is rated at
400V. Fairchild recommends using them up to 240V, but applying a 3:1 rating
rule of thumb, I use them up to 200V at 50 or 60 Hz, anxiety grows at 240.

Chris

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of William Jacobs
> Sent: Wednesday, December 19, 2001 4:31 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: Triac Driver for 115/220VAC ?
>
>
> Harold,
>         I think a moc3051 is good for 600 volts.
>
> bill
>
>
> Harold M Hallikainen wrote:
>
> > > MOC3031 series, but its only good for 115VAC.
> > >
>
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