i know this is a long shot but i'm doing some repairs on a piece of theatrical dimming equipment.

does anybody know where i can find a BTA25-600A triac. i tried maplin and rs and all the others i can think of but this triac is obsolete now and i'm having difficulty finding them.

try getting a quote from: http://www.digchip.com/datasheets/parts/datasheet/456/BTA25-600A.php

HTH

Bas

i dont like the idea of buying stuff from america though. i need to find a supplier in the uk if possible

You will be lucky to find it here if you can't supply.

You might find a company that will import bits for a mark up, either that or if you know anyone who works for a company with an account with them.

http://www.dialelec.com/301.html

http://www.eurotech.co.uk/components/609.html

First 2 in google.

Remember folks - GOOGLE IS YOUR FRIEND :p

Tom you can find the equivalent Triac at Cricklewood Electronics............Item no 15809

http://new.cricklewoodelectronics.com

Tom you can find the equivalent Triac at Cricklewood Electronics............Item no 15809

http://new.cricklewoodelectronics.com

thankyou very much for that. i've allready looked at the b-series equivilent component, i have considered using them but i'm unsure if these will work in the required way because they (from the datasheet from philips-semiconductors) only require half of the gate current of the a series compont so. this may require further modifications to the circuitry for correct operation.