RN1313,LF

Overview

The RN1313,LF is a single NPN pre-biased bipolar junction transistor (BJT) manufactured by Toshiba Semiconductor and Storage. It integrates a bias resistor network with the transistor to simplify circuit design. The device features a maximum collector current of 100 mA and a collector-emitter voltage rating of 50 V. It includes an internal base resistor of 47 kΩ. The component is housed in an SOT-323 (USM) surface-mount package. It complies with RoHS standards and holds AEC-Q101 qualification for automotive reliability.

Feature Summary

• Integrates a single NPN BJT with a built-in 47 kΩ base bias resistor to reduce external component count.
• Designed for high-reliability applications through AEC-Q101 automotive qualification.
• Utilizes a compact SOT-323 surface-mount package for efficient PCB space utilization.

Applications

• Automotive electronic systems requiring signal switching or level shifting
• General-purpose digital logic interface circuits
• Voltage translation between different logic levels

Procurement Notes

Verify that the specific order code includes the LF suffix to ensure compliance with lead-free and RoHS environmental standards. Confirm AEC-Q101 qualification status if the application requires automotive-grade reliability. Ensure the SOT-323 package dimensions match the target PCB footprint. Check datasheet specifications for thermal resistance and power dissipation limits under actual operating conditions.

Selection Notes

Select this component when a compact solution for NPN switching with integrated biasing is required. The 47 kΩ internal resistor value suits standard logic interface applications. Consider the 50 V voltage rating and 100 mA current limit against circuit requirements. The SOT-323 package offers a small form factor suitable for space-constrained designs compared to larger through-hole alternatives.

Part Context

The RN1313 belongs to Toshiba's Bias Resistor Built-in Transistors (BRT) family. These devices combine discrete transistors with resistive networks to replace multiple components. This specific model targets general-purpose and automotive markets, offering a balance of performance and reliability. It serves as a simplified alternative to discrete BJT and resistor combinations.

Replacement Considerations

Cross-reference with other single NPN BRTs featuring similar 47 kΩ base resistance and 50 V ratings. Verify pinout compatibility and package dimensions before substitution. Ensure equivalent electrical parameters such as DC current gain and saturation voltage are met. Confirm that any replacement also meets AEC-Q101 requirements if used in automotive contexts.