RN4909FE,LXHF(CT

Overview

The RN4909FE,LXHF(CT is a digital transistor manufactured by Toshiba Semiconductor and Storage, featuring an NPN/PNP dual configuration within an ES-6 (SOT-563) surface-mount package. It integrates bias resistors to reduce component count and assembly costs. Key electrical parameters include a collector-emitter voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and a power dissipation (Pd) of 100 mW. The device incorporates typical input resistors of 10 kΩ for the NPN section and 47 kΩ for the PNP section, with a DC current gain (hFE) minimum of 80 at 10 mA and 5 V. It operates up to maximum frequencies of 200 MHz and 250 MHz, with an emitter-base voltage (VEBO) rating of 6 V.

Feature Summary

• Integrates one NPN and one PNP bipolar junction transistor with built-in bias resistors in a single compact package.
• Designed for point-symmetrical pinout compatibility to facilitate automated placement and board layout flexibility.
• Reduces printed circuit board space and assembly complexity by replacing discrete transistors and external resistors.

Applications

• Switching circuits for logic interfaces
• Inverter applications
• Driver circuits for low-power loads

Procurement Notes

Verify the specific suffix LXHF(CT) against the manufacturer's latest datasheet to confirm lead-free compliance and tape-and-reel specifications. Ensure the ES-6 package footprint matches the design schematic. Confirm AEC-Q200 qualification status if automotive application requirements are mandatory, as this varies by production batch and specific ordering code.

Selection Notes

Select this component when a complementary NPN/PNP pair is required for push-pull or differential switching stages. The integrated bias resistors simplify base drive calculations compared to discrete BJT solutions. Consider the 100 mA current limit and 100 mW thermal dissipation constraints for high-frequency switching operations. The SOT-563 package is suitable for dense consumer electronics layouts where space is limited.

Part Context

This part belongs to Toshiba's RN series of pre-biased digital transistors, which combine bipolar junction transistors with internal resistor networks. These devices are engineered to replace multiple discrete components, thereby enhancing reliability and reducing manufacturing costs. The FE suffix typically denotes specific binning or packaging variations within the standard RN49xx family.

Replacement Considerations

Direct substitutes may include other RN49xx series parts from Toshiba with identical pinouts and electrical ratings, such as RN4908 or RN4910 variants, provided the resistor values match the circuit requirements. Cross-manufacturer replacements require careful verification of hFE bins, VCEO ratings, and package dimensions to ensure functional equivalence.