RN2905,LF(CT

Overview

The RN2905,LF(CT is a dual pre-biased NPN transistor array manufactured by Toshiba Semiconductor and Storage. It integrates two PNP digital transistors within a single US6 surface-mount package. Key electrical specifications include a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA per element. The device features an internal base resistor (R1) of 2.2 kΩ and an emitter resistor (R2) of 47 kΩ. It operates with a transition frequency of 200MHz and a maximum power dissipation of 200mW. The DC current gain (hFE) is specified at a minimum of 80 at 10mA and 5V.

Feature Summary

• Integrates dual PNP pre-biased transistors to simplify circuit design and reduce component count.
• Includes built-in internal resistors for base and emitter biasing, eliminating external resistor requirements.
• Utilizes compact US6 surface-mount packaging for efficient space utilization on printed circuit boards.

Applications

• General-purpose switching applications in consumer electronics.
• Driver circuits for low-current loads in portable devices.
• Logic interface buffering between microcontrollers and peripheral components.

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as LXHF indicate automotive qualification under AEC-Q101 standards. Confirm that the standard commercial version meets the required environmental and performance criteria for the target application before finalizing procurement specifications.

Selection Notes

Select this component when a dual PNP configuration with integrated biasing is required. Ensure the 50V voltage rating and 100mA current capacity align with the load requirements. Consider the US6 package dimensions for board layout compatibility and verify thermal management needs against the 200mW power dissipation limit.

Part Context

This part belongs to the RN29xx series of pre-biased transistor arrays from Toshiba. These devices are designed to replace discrete transistor-resistor combinations, offering improved reliability and reduced assembly time. The RN2905 specifically provides a dual PNP solution within a small footprint, suitable for modern compact electronic designs.

Replacement Considerations

Direct substitutes may include other dual PNP pre-biased transistors with similar R1/R2 values and package types. Verify pinout compatibility and electrical parameters such as VCEO and ICmax before substitution. Cross-reference with Toshiba's RN2901-06 series documentation for potential family replacements.