RN1406,LXHF

Overview

The RN1406,LXHF is a single NPN digital transistor manufactured by Toshiba Semiconductor and Storage. It integrates an NPN bipolar junction transistor with internal bias resistors, specifically R1 at 10 kOhms and R2 at 10 kOhms, housed in a USM-3 (SOT-323) surface-mount package. The device supports a maximum collector-emitter voltage (VCEO) of 50 V and a continuous collector current (IC) of 100 mA. Key electrical characteristics include a minimum DC current gain (hFE) of 50, a transition frequency (fT) of 250 MHz, and a power dissipation (Pd) of 100 mW. It operates within a temperature range up to +150°C and holds AEC-Q101 automotive qualification.

Feature Summary

• Integrates NPN transistor with dual bias resistors for simplified circuit design
• Automotive-grade reliability compliant with AEC-Q101 standards
• High-speed switching capability with 250 MHz transition frequency
• Compact SMD packaging suitable for space-constrained applications

Applications

• Automotive switch circuits
• Inverter control circuits
• Interface connection drivers
• General-purpose driver circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm exact packaging configuration and compliance status. Ensure the component meets the required automotive qualification standards for the intended application environment. Cross-reference the datasheet revision date to guarantee alignment with current technical specifications and regulatory requirements.

Selection Notes

Select this component when a single NPN digital transistor with equal 10k Ohm bias resistors is required. Verify that the 50V voltage rating and 100mA current capacity meet the load requirements. Confirm compatibility with the USM-3 footprint during PCB layout. Consider the 250MHz frequency limit for high-speed switching needs.

Part Context

This part belongs to the RN1406 series of pre-biased transistors from Toshiba. It is designed as a replacement for discrete resistor-transistor networks, reducing board space and assembly costs. The LXHF suffix typically denotes specific packaging and environmental compliance attributes defined by the manufacturer for automotive and industrial markets.

Replacement Considerations

Direct substitutes must match the NPN polarity, 50V VCEO, 100mA IC, and 10k/10k resistor ratio. Verify pinout compatibility with the USM-3 package. Check equivalent hFE and fT specifications to ensure performance parity in switching applications.