2N4427 NPN overlay transistors in TO-39 metal packages with the collector connected to the case. The device is primarily intended for class-A, B, or C amplifiers, frequency multiplier, and oscillator circuits.

2N4427 Pinout

2N4427 Pin Configuration
| Pin No | Pin Name |
|---|---|
| 1 | Emitter |
| 2 | Base |
| 3 | Collector |
2N4427 Specification
| Name | Description |
|---|---|
| Collector-Emitter Voltage (Vce) | 20 V |
| Collector-Base Voltage (Vcb) | 40 V |
| Emitter-Base Voltage (Veb) | 2 V |
| Collector Current (Ic) | 0.4 A |
| Collector Power Dissipation (Pc) | 1 W |
| Transition Frequency | 500 MHz |
Application
- The transistors are intended for use in output, driver or pre-driver stages in VHF and UHF equipment
You can download this datasheet for 2N4427 NPN Overlay Transistor – Datasheet from the link given below: