RN2904,LF

Overview

The RN2904FE,LF is a dual pre-biased NPN digital transistor array manufactured by Toshiba Semiconductor and Storage. It integrates two NPN transistors with built-in bias resistors in a compact surface-mount package. Key electrical specifications include a collector-emitter breakdown voltage of 50V and a continuous collector current of 100mA. The device features a DC current gain (hFE) of at least 80 at 10mA and 5V, with a saturation voltage of 300mV maximum at 250µA base current and 5mA collector current. Internal bias resistors are typically 47kΩ for both base (R1) and emitter (R2). The transition frequency is rated at 200MHz, and power dissipation is limited to 100mW.

Feature Summary

• Integrates dual NPN transistors with internal bias resistors to simplify circuit design
• Provides high-speed switching capability with a 200MHz transition frequency
• Offers low saturation voltage for efficient signal switching
• Utilizes a compact ES6 surface-mount package for space-constrained applications

Applications

• General-purpose switching circuits
• Driver circuits for logic interfaces
• Signal level shifting applications

Procurement Notes

Verify the specific ordering suffix, such as LF or LXHF, to confirm the exact packaging type and compliance status. Confirm the manufacturer part number against official Toshiba documentation to ensure authenticity. Check for automotive qualification requirements if the application demands AEC-Q101 standards, as standard versions may not meet these criteria. Ensure the selected variant matches the required pinout and thermal characteristics for the target PCB layout.

Selection Notes

Select this component when a dual NPN configuration with integrated biasing is required to reduce external component count. Consider the 50V voltage rating and 100mA current limit to ensure compatibility with load requirements. Evaluate the 100mW power dissipation limit against thermal management capabilities in the final assembly. Compare the ES6 package dimensions against available board space constraints.

Part Context

The RN2904 belongs to Toshiba's series of pre-biased transistor arrays designed to replace multiple discrete components. These devices combine transistors and resistors into a single unit to improve reliability and reduce footprint. The RN2904 specifically provides a dual NPN solution, offering an alternative to using separate transistors and external biasing networks in digital logic and switching applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided source data. Verify cross-reference availability through official distributor channels or Toshiba's replacement guides.