Found a Motorola xref which lists their equivalent part: http://www.sps-mot.com/ppd/html/thyristorxref.html with data sheet at http://scgproducts.motorola.com/onsemi//Collateral/DataSheet/mcr218rev1.pdf (SCR, 200V, 8A) Found via search on 2n4442 at http://www.northernlight.com/ Not my most-used search engine, but sometimes good for obscure stuff. -- regards, Tom Burgess -- Digital Engineer Dominion Radio Astrophysical Observatory P.O. Box 248, Penticton, B.C. Canada V2A 6K3 Email: [log in to unmask] Office: (250) 490-4360 Switch Board: (250) 493-2277 Fax: (250) 493-7767