>>National LM2936Z5. Its a low dropout 5V regulator, supplies >up to 150mA (I think), and has a quiescent current of around >15uA. > I just tried to buy these last week from the Hong Kong NS agent & was told these are now obsolete & discontinued. Typically (for HK) they could not tell me what was the replacement part which I am sure there is because they have been very hard to get these last months due to cellular phone manufacture. ----------------------------------------------------------------------------- Peter J. Crowcroft PO Box 88458, Sham Shui Po, Hong Kong Voice: 852-2720 0255. Fax: 852-2725 0610 Email: diykit@hk.super.net Web: http://www.hk.super.net/~diykit -----------------------------------------------------------------------------