wrote:



Not very surprisingly I cannot source a replacement BF472, so I need to
find a substitute.


I would try a MJE350(pnp/300V/500ma/20w/TO-126/hFE=30-240).
Anchor Electronics http://anchor-electronics.com/ wants US$0.95 each.


** I have already pointed out that Sydney's biggest spare parts dealer( WES components) has the BF470 in stock for under $1.

Sylvia lives in Sydney.


..... Phil