Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Amplifier Discussion => Topic started by: Jason G on September 16, 2007, 10:03:59 PM
Ok
I have a JC 77 with abnormal hiss. Abnormal even for JC 's. I used an audio proble to trouble shoot.
everythings cool till it hits these transisters on one of the amps. I done some reading on subing transisers but still find my self lost in the sea of numbers. Any help would be apreciated.
Thanks
Part Number = 2SA970GR
Manufacturer Name = Various
Description = Si PNP Lo-Pwr BJT
V(BR)CEO (V) = 120
V(BR)CBO (V) = 120
I(C) Abs.(A) Collector Current = 100m
Absolute Max. Power Diss. (W) = 300m
I(CBO) Max. (A) = 100n
@V(CBO) (V) (Test Condition) = 120
V(CE)sat Max.(V) = .3
@I(C) (A) (Test Condition) = 10m
@I(B) (A) (Test Condition) = 1.0m
h(FE) Min. Static Current Gain = 200
h(FE) Max. Current gain. = 400
@I(C) (A) (Test Condition) = 2.0m
@V(CE) (V) (Test Condition) = 6.0
f(T) Min. (Hz) Transition Freq = 100M
@I(C) (A) (Test Condition) = 1.0m
@V(CE) (V) (Test Condition) = 6.0
C(obo) (Max) (F) = 4.0p
@V(CB) (V) (Test Condition) = 10
@Freq. (Hz) (Test Condition) = 1.0M
Package = TO-92
Military = N
I just realized I had some of these hanging around .
SK3450
Various :: Si PNP Lo-Pwr BJT
Specsheet / Datasheet
V(BR)CEO (V)=80
V(BR)CBO (V)=80
I(C) Abs.(A) Collector Current=500m
Absolute Max. Power Diss. (W)=750m
h(FE) Min. Static Current Gain=160
@I(C) (A) (Test Condition)=150m
@V(CE) (V) (Test Condition)=10
f(T) Min. (Hz) Transition Freq=120M
Package=TO-92var
Military=N