This product is a NPN silicon epitaxial planar transistor, especially suitable for application in class-B video output stages of TV receivers and monitors.
This document provides technical specifications for the BF420 and BF422, which are NPN silicon epitaxial planar transistors housed in a TO-92 plastic package. These devices are specifically suited for application in class-B video output stages of TV receivers and monitors. Complementary PNP types (BF421 and BF423) are also recommended for use.
| Package Type | TO-92 Plastic Package |
|---|---|
| Transistor Type | NPN Silicon Epitaxial Planar Transistors |
| Collector-Base Voltage (BF420) | 300 V |
| Collector Current | 50 mA |
| Power Dissipation | 830 mW |
| Junction Temperature | 150 °C |
| Gain-Bandwidth Product | 60 MHz |
The maximum power dissipation is 830 mW when the ambient temperature is 25 °C.
The maximum junction temperature is 150 °C.
The thermal resistance from junction to ambient air is 150 K/W.