RN1424TE85LF

Overview

The RN1424TE85LF is a single NPN bias resistor built-in transistor manufactured by Toshiba Semiconductor and Storage. It integrates an NPN epitaxial planar silicon transistor with a 22 kΩ base bias resistor into a compact surface-mount package. The device operates with a collector-emitter voltage of 50 V and a continuous collector current of 100 mA. Key electrical characteristics include a minimum DC current gain (hFE) of 120 and a transition frequency of 150 MHz. The component is designed for low-power switching applications within a specified operating temperature range.

Feature Summary

• Integrates a single NPN transistor with a fixed 22 kΩ base resistor to reduce external component count.
• Utilizes a small surface-mount package suitable for high-density PCB layouts.
• Features high DC current gain and fast switching speed for efficient signal processing.

Applications

• General-purpose switching circuits
• Inverter logic circuits
• Interface driver stages

Procurement Notes

Verify the exact suffix TE85LF against the manufacturer's latest datasheet to confirm packaging type and tape-and-reel specifications. Confirm end-of-life status or obsolescence notices directly with Toshiba Semiconductor and Storage before finalizing procurement plans, as availability may vary.

Selection Notes

Select this component when a single NPN switch with integrated base drive is required. Ensure the 22 kΩ internal resistance matches the input impedance requirements of the driving source. Verify that the 50 V collector-emitter voltage rating exceeds the maximum circuit voltage under all operating conditions.

Part Context

This part belongs to the RN series of bias resistor built-in transistors from Toshiba. These devices are engineered to simplify digital circuit design by replacing discrete transistor-resistor combinations. The TE85LF suffix typically denotes a specific surface-mount package configuration used in automated assembly processes.

Replacement Considerations

Direct substitutes must match the NPN polarity, 100 mA current rating, 50 V voltage rating, and 22 kΩ internal base resistance. Verify pinout compatibility and thermal dissipation characteristics before substituting with components from other manufacturers.