This is one of the transistor types.
Part Number: D669A, 2SD669, 2SD669A, D669
Function: 160V, 1.5A, NPN Transistor
Package: TO-126MOD Type
Manufacturer: Hitachi
Description
This is 160V, 1.5A, Silicon NPN Epitaxial Transistor.
Absolute Maximum Ratings (Ta = 25°C)
1. Collector to base voltage : VCBO = 180 V
2. Collector to emitter voltage : VCEO = 160 V
3. Emitter to base voltage : VEBO = 5V
4. Collector current IC = 1.5 A
5. Collector peak current : IC(peak) = 3A
Pinout
1. Low frequency power amplifier complementary pair with 2SB649 / 2SB649A