RN4901FE,LXHF(CT

Overview

The RN4901FE,LXHF(CT is a dual pre-biased bipolar junction transistor (BJT) array manufactured by Toshiba Semiconductor and Storage. It integrates one NPN and one PNP epitaxial transistor within a single US6 surface-mount package, which corresponds to the SOT-363 footprint. The device features built-in bias resistors with a ratio of 1:1, specifically R1 and R2 both valued at 4.7 kΩ. Key electrical ratings include a maximum collector-emitter voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and a total power dissipation (Pd) of 200 mW. The component supports transition frequencies up to 200 MHz for the NPN and 250 MHz for the PNP element. It is qualified under the AEC-Q101 standard for automotive applications and operates within a temperature range extending up to +150°C.

Feature Summary

• Integrates complementary NPN and PNP transistors with fixed internal bias resistors to simplify circuit design.
• Utilizes a compact US6 (SOT-363) surface-mount package to minimize board space requirements.
• AEC-Q101 qualified for reliability in automotive electronic environments.

Applications

• Automotive digital interface circuits requiring signal inversion or buffering.
• Driver circuits for low-power loads in vehicle control modules.
• Switching applications in consumer electronics utilizing surface-mount assembly.

Procurement Notes

Verify the specific suffix LXHF(CT against the original equipment manufacturer's documentation to confirm lead-free status and tape-and-reel packaging specifications. Ensure that the US6 package dimensions align with the target PCB land pattern. Confirm AEC-Q101 qualification requirements if the application involves automotive systems. Cross-reference the resistor values and polarity configuration with the official datasheet to prevent integration errors during schematic capture.

Selection Notes

Select this component when a matched NPN/PNP pair with integrated biasing is required for space-constrained designs. The 4.7 kΩ internal resistors define the input impedance and drive current characteristics; verify these values suit the driving source. Consider the 200 mW power dissipation limit and thermal management needs for the US6 package. Compare transition frequencies against the target switching speed requirements to ensure adequate performance margins.

Part Context

This part belongs to Toshiba's RN series of digital transistors, which are designed to replace discrete resistor-transistor networks. The RN4901 base model provides the core electrical characteristics, while the LXHF suffix typically denotes specific manufacturing attributes such as lead-free composition and automotive-grade screening. The FE variant often indicates a specific resistor tolerance or testing criterion within the family, though exact distinctions require datasheet verification.

Replacement Considerations

Direct substitutes must match the US6/SOT-363 package, 50V VCEO rating, 100mA IC capability, and the 1:1 resistor ratio (4.7kΩ/4.7kΩ). Verify pinout compatibility between the NPN and PNP elements. Alternative parts from other manufacturers should be evaluated for equivalent hFE gain and transition frequency specifications to ensure functional parity in existing designs.