RN4903(T5L,F,T)

Overview

The RN4903(T5L,F,T) is a pre-biased digital transistor array manufactured by Toshiba Semiconductor and Storage. It integrates one NPN and one PNP bipolar junction transistor (BJT) within a single US6 surface-mount package. The device features typical base resistors of 22 kΩ for both the NPN and PNP elements, providing a resistor ratio of 1. Key electrical specifications include a maximum collector-emitter voltage (Vceo) of -50 V, a continuous collector current of 100 mA, and a power dissipation rating of 200 mW. The component supports operating frequencies up to 200 MHz for the NPN section and 250 MHz for the PNP section, with a minimum DC current gain (hFE) of 70.

Feature Summary

• Integrates complementary NPN and PNP transistors with built-in biasing resistors to simplify circuit design.
• Utilizes the compact US6 surface-mount package to minimize board space requirements.
• Designed for high-speed switching applications with transition frequencies reaching 250 MHz.

Applications

• Interface circuits between logic gates and driving loads.
• Switching applications in consumer electronics and industrial equipment.
• Level shifting and buffer stages in digital signal processing systems.

Procurement Notes

Verify the specific suffix T5L against official Toshiba documentation to confirm tape-and-reel packaging details. Ensure compliance with RoHS directives as indicated by the LF designation. Cross-reference the part number with authorized distributors to confirm current availability status and lead times prior to procurement planning.

Selection Notes

Select this component when a matched NPN/PNP pair with identical 22 kΩ base resistors is required. The US6 package is suitable for high-density PCB layouts. Verify that the 50 V voltage rating and 100 mA current capacity meet the specific load requirements of the target application circuit.

Part Context

This part belongs to the RN49xx series of pre-biased digital transistors from Toshiba. These devices are designed to replace discrete resistor-transistor networks, reducing component count and assembly time. The RN4903 specifically provides a symmetrical configuration with equal resistance values for both transistor types.

Replacement Considerations

RN4985,LXHF(CT is listed as a parameter-equivalent substitute for related models in the series. Verify pinout compatibility and electrical parameters before substitution.