A425
A425 is Triode 1999 manufactured by Philips Semiconductors.
A425 PHILIPS
Triode, Detector or LF amplifier
Dimensions (mm)
83 x 42
Heating direct, AC or DC, parallel
Vf (V) If (A)
4 0.065 a g a1 f1
4g f1 f2
Base A
2 f2
Capacitances ag
14 f2 Base G f1
Cag (pF)
Operating characteristics
Vb (V) Ra (kΩ) Vg (V) Ia (mA) µ S (mA/V) Ri (kΩ)
200 320
-2.5 0.25 25 1.2 80
200 1000
-2.5 0.1 25 1.2 250
FP 1999.08.26...
