RN4904(T5L,F,T)

Overview

The RN4904(T5L,F,T) is a dual pre-biased bipolar junction transistor (BJT) array manufactured by Toshiba Semiconductor and Storage. It integrates one NPN and one PNP transistor within a single surface-mount US6 package, which corresponds to the 6-TSSOP, SC-88, or SOT-363 form factor. The device features a maximum collector-emitter voltage of 50V and a continuous collector current rating of 100mA for each transistor. Internal biasing resistors are configured with a base resistor (R1) of 10 kΩ and an emitter resistor (R2) of 47 kΩ. Key electrical specifications include a minimum DC current gain (hFE) of 30 at 10mA and 5V, a maximum saturation voltage of 300mV at 250µA base current and 5mA collector current, and transition frequencies of 200MHz for the NPN and 250MHz for the PNP element. The unit supports a maximum power dissipation of 200mW.

Feature Summary

• Integrates complementary NPN and PNP transistors with built-in biasing resistors to simplify circuit design
• Utilizes compact US6 surface-mount packaging for space-constrained applications
• Provides high-speed switching capabilities with specified transition frequencies up to 250MHz

Applications

• Digital logic interface circuits requiring level shifting or buffering
• Switching applications in consumer electronics and portable devices
• General-purpose amplifier stages utilizing pre-biased configurations

Procurement Notes

Verify the specific suffix T5L,F,T against official Toshiba documentation to confirm exact marking codes and tape-and-reel specifications. Confirm RoHS compliance status and ensure the component meets required automotive or industrial qualification standards if applicable to the target system. Cross-reference distributor part numbers to avoid confusion with similar RN49xx series variants.

Selection Notes

Select this component when a matched NPN/PNP pair with fixed internal biasing is required to reduce external component count. Ensure the 50V voltage rating and 100mA current limit align with the load requirements. Compare the 10kΩ/47kΩ resistor values against alternative models like the RN4905 or RN4906 if different biasing ratios are needed for specific drive conditions.

Part Context

This component belongs to the RN49xx series of digital transistors from Toshiba, designed as direct replacements for discrete resistor-transistor networks. The US6 package offers a small footprint suitable for modern PCB layouts. It serves as a fundamental building block for digital switching and analog signal conditioning tasks where compactness and simplified biasing are prioritized.

Replacement Considerations

Direct substitutes within the same family include the RN4904LF and RN4904(LXHF). Verify pin compatibility and electrical parameters before swapping with other RN49xx models such as the RN4905 or RN4906, as their internal resistor values differ significantly.