RN1707,LF

Overview

The RN1707,LF is a dual NPN bias resistor built-in transistor manufactured by Toshiba Semiconductor and Storage. It integrates two NPN transistors with internal bias resistors into a single surface-mount package. The device supports a maximum collector current of 100mA and a collector-emitter breakdown voltage of 50V. Internal resistors are configured as R1 at 10 kΩ and R2 at 47 kΩ. Key electrical parameters include a minimum DC current gain (hFE) of 80 at 10mA and 5V, and a maximum saturation voltage of 300mV at 250µA base current and 5mA collector current. The transition frequency is rated at 250MHz, with a maximum power dissipation of 200mW.

Feature Summary

• Integrates two NPN transistors with built-in bias resistors to reduce component count
• Simplifies circuit design for switching, inverter, interface, and driver applications
• Utilizes an Extreme-Super-Mini USV package for compact equipment manufacturing

Applications

• Switching circuits
• Inverter circuits
• Interface circuits
• Driver circuits

Procurement Notes

Verify the specific ordering suffix against official Toshiba documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration. Ensure the selected variant matches the required bias resistor values and thermal characteristics for the target application environment.

Selection Notes

Select this component when a dual NPN configuration with fixed bias resistors is required to minimize board space. Verify that the 10kΩ and 47kΩ internal resistor values align with the driving logic levels. Compare the 250MHz transition frequency against the signal speed requirements of the intended switching or interface application.

Part Context

The RN1707,LF belongs to the RN17xx series of bias resistor built-in transistors from Toshiba. This series is designed to replace discrete transistor and resistor combinations. It serves as a complementary solution to other series within the manufacturer's portfolio, offering simplified assembly and reduced parts count for high-density electronic designs.

Replacement Considerations

Consult official Toshiba cross-reference documents for verified equivalent part numbers. Do not substitute based on generic pinout compatibility without verifying internal resistor values and hFE specifications.