RN1409,LXHF

Overview

The RN1409,LXHF is a single NPN pre-biased digital transistor manufactured by Toshiba Semiconductor and Storage. It integrates an NPN bipolar junction transistor with internal base (R1) and emitter (R2) resistors, specified as 47 kOhms and 22 kOhms respectively. The device supports a maximum collector-emitter voltage of 50 V and a continuous collector current of 100 mA. Key electrical characteristics include a minimum DC current gain (hFE) of 70 at 10 mA and 5 V, a saturation voltage of 300 mV at 250 µA base current and 5 mA collector current, and a transition frequency of 250 MHz. It operates within a temperature range up to 150°C and is housed in the S-Mini package.

Feature Summary

• Integrates NPN transistor with fixed bias resistors for simplified circuit design
• Automotive grade qualification compliant with AEC-Q101 standards
• High-speed switching capability with 250 MHz transition frequency
• Compact surface-mount packaging for space-constrained applications

Applications

• Switching circuits in automotive electronic control units
• Level shifting and buffer stages in digital logic interfaces
• Driver circuits for low-power loads in consumer electronics

Procurement Notes

Verify the specific suffix LXHF against the official Toshiba datasheet to confirm pinout compatibility and resistor values. Ensure the component meets AEC-Q101 requirements if used in automotive systems. Cross-reference the S-Mini package dimensions with your PCB footprint library to prevent assembly errors during procurement.

Selection Notes

Select this component when a single NPN switch with integrated biasing is required. The 47 kOhm base resistor suits moderate drive currents, while the 22 kOhm emitter resistor provides stability. Compare hFE and saturation voltage specifications against load requirements. Consider the S-Mini package size relative to available board space and thermal dissipation needs for the target application environment.

Part Context

This part belongs to Toshiba's RN1409 series of pre-biased transistors. The LXHF suffix typically denotes specific packaging or tape-and-reel configurations distinct from the LF variant. It shares core electrical parameters with other RN1409 variants but may differ in physical form factor or manufacturing lot specifications defined by the manufacturer.

Replacement Considerations

Direct substitutes include RN1409,LF and RN1409LXGF(T. Verify that alternative packages maintain identical pin assignments and that resistor tolerances match the original design constraints before substitution.