AC176K Germanium NPN transistor - Siemens

AC176K  NPN Germanium transistor from the 70's by Siemens.  

as used in many analogue synthesisers and guitar effects box 's of the period.  

these come already mounted in a big aluminium block (7 x 7 x 18.5mm - NS257 package *) which can be bolted down using an M5 bolt. (see photo)  

(* note some variations have a fixing bolt through hole, some a slot)  

Status: NOS ( New Old Stock)   

Tested Components: YES  

RoHS compliant : no