Hi,
Email me I'll give free spares (new old stock) by mail.
No spec. can be found for 2sk129a as of now but the equivalent UPA68H has:
http://www.datasheets.org.uk/specsheet.php?part=UPA68H
I have read a previous post by Echowars regarding 2sk129 and it really help solve the problem with my AU-519 (DD/DC circuit) driver board.
Symptom, DC offset keep on rising on L board. Replacing this 2sk129a keeps the value steady at 0 mv.
My first Au-519 (s/n 1229010265) uses 2sk129 can type enclosure, while my other 519 (s/n 219051417) uses IC type UPA68H. With the description on the board it's identical, the specs more or less the same.
Regards
arsenio
I got these 2sk129a from (gave me also some extras):
http://www.fibra-brandt.com/