RN1423TE85LF

Overview

The RN1423TE85LF is a pre-biased NPN digital transistor manufactured by Toshiba Semiconductor and Storage. It integrates an NPN bipolar junction transistor with built-in bias resistors in a compact S-Mini (SOT-23) surface-mount package. The device features a maximum collector-emitter voltage of 50V and a continuous collector current rating of 0.8A. Internal bias resistors are specified at 4.7kΩ for both base configurations, simplifying circuit design by reducing component count. The unit offers a power dissipation capacity of 200mW and supports switching frequencies up to 300MHz, making it suitable for high-speed logic interfacing applications.

Feature Summary

• Integrates NPN BJT with dual internal bias resistors
• Supports high-speed switching operations up to 300MHz
• Provides simplified circuit design through integrated components
• Utilizes compact S-Mini surface-mount packaging

Applications

• Small-signal switching circuits
• Logic level interfacing between different voltage domains
• Low-power load control systems

Procurement Notes

Verify the exact suffix TE85L,F against official Toshiba documentation to confirm tape-and-reel specifications and environmental compliance status. Ensure that the ordering information matches the specific variant requirements for your production line, as suffixes may indicate differences in packaging or material composition. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring integrated biasing for NPN transistors to minimize board space and assembly steps. The 50V voltage rating and 0.8A current capacity define its operational limits for low-to-medium power switching tasks. Consider the 200mW power dissipation capability when determining thermal management requirements for dense PCB layouts. The fixed 4.7kΩ internal resistors eliminate the need for external resistor selection, streamlining the bill of materials.

Part Context

This device belongs to Toshiba's series of pre-biased digital transistors designed for replacing discrete resistor-transistor networks. These components are engineered to reduce printed circuit board area and simplify schematic designs by combining active and passive elements into a single package. The S-Mini form factor allows for high-density mounting in consumer electronics and industrial control modules where space constraints are critical.

Replacement Considerations

Direct substitutes include other pre-biased NPN transistors from Toshiba such as the RN1423 series variants with compatible electrical ratings. Verify that alternative parts match the 50V Vceo, 0.8A Ic, and 4.7kΩ internal resistance specifications. Ensure the replacement maintains the same SOT-23 footprint and pin configuration to guarantee mechanical compatibility without redesigning the PCB layout.