RN4904,LF

Overview

The RN4904,LF is a dual digital transistor array manufactured by Toshiba Semiconductor and Storage. It integrates one NPN and one PNP epitaxial-type bipolar junction transistor within a single US6 surface-mount package. The device features built-in bias resistors to simplify circuit design. Key electrical specifications include a maximum collector-emitter voltage of 50V for both transistors and a continuous collector current rating of 100mA. The typical base resistor (R1) is 10 kΩ, while the typical emitter-base resistor (R2) is 47 kΩ. The DC current gain (hFE) is specified with a minimum value of 80 at 10mA and 5V. The unit supports a transition frequency of 200MHz and has a maximum power dissipation of 200mW.

Feature Summary

• Integrates complementary NPN and PNP transistors with pre-biasing resistors in a compact SMD package
• Simplifies circuit design by reducing component count and manufacturing processes
• Provides high DC current gain for efficient switching applications

Applications

• Switching circuits
• Inverter circuits
• Interface circuits

Procurement Notes

Verify the specific ordering suffix and packaging configuration when sourcing this component. Confirm RoHS compliance status and check for any recent product change notices or lifecycle updates directly from the manufacturer's official documentation before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a matched NPN/PNP pair with integrated biasing in a small footprint. Ensure the required hFE meets the minimum specification of 80 and that the 50V voltage rating aligns with the target circuit's operating conditions. Verify thermal management capabilities given the 200mW power dissipation limit in the US6 package.

Part Context

This part belongs to the RN49xx series of digital transistors from Toshiba. These devices are designed to replace discrete transistor and resistor combinations, offering space savings on printed circuit boards. The series includes various resistor configurations to suit different logic interface requirements.

Replacement Considerations

Publicly confirmed substitute part numbers for the RN4904,LF were not identified in the provided source material. Consult official cross-reference lists from distributors or manufacturers for verified alternatives.