PNP transistor SA561 substitute???
« on: April 21, 2008, 05:13:09 PM »
This transistor is from a 1970 Yamaha Pm1000 channel strip.
The original transistor is working and I just want to replace with a newer low noise transistor. I am not sure which specs are most important to match other than the Vceo, Vcbo.

This is a PNP type transistor so should the values be negative example Vceo = - 50vdc etc?
 

V(BR)CEO (V)=50
 
V(BR)CBO (V)=50
 
I(C) Abs.(A) Collector Current=150m
 
Absolute Max. Power Diss. (W)=300m
 
h(FE) Min. Static Current Gain=240
 
@I(C) (A) (Test Condition)=20m
 
@V(CE) (V) (Test Condition)=1.0
 
C(obo) (Max) (F)=13p
 
Package=TO-92
 
Military=N

I posted this on Diyaudio also.
thanks for any help PJ


 

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