This post explains for the NPN Transistor.
The Part Number is 2SD667, 2SD667A.
The function of this semiconductor is 80V, 1A, Silicon NPN Epitaxial Transistor.
The package is TO-92MOD Type
Manufacturer: Renesas
Preview images :
Description
D667 is 80V, 1A, Silicon NPN Epitaxial Transistor.
A NPN transistor is a type of bipolar junction transistor (BJT) that consists of two n-type semiconductor materials separated by a single p-type material.
The NPN transistor is used to amplify or switch electronic signals and is widely used in many electronic circuits. It works by controlling the current flow between the collector and emitter terminals through the base terminal.
When a small current is applied to the base, it controls a much larger current between the collector and emitter, making the NPN transistor an effective amplifier or switch.
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 120 V
2. Collector to Emitter Voltage: Vceo = 80 V
3. Emitter to Base Voltage: Vebo = 5 V
4. Collector Current: Ic = 1 A
5. Collector Dissipation : Pc = 0.9 A
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C
Application:
• Low frequency power amplifier
• Complementary pair with 2SB647/A