RN4908,LF(CT

Overview

The RN4908,LF(CT is a pre-biased digital transistor array manufactured by Toshiba Semiconductor and Storage. It integrates one NPN and one PNP epitaxial type transistor within a single US6 surface-mount package. The device features built-in bias resistors to simplify circuit design and reduce component count. Key electrical specifications include a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA for both transistors. The maximum power dissipation is rated at 200mW. The unit operates with a transition frequency of 200MHz and includes internal base resistor R1 and emitter-base resistor R2 configurations typical for the RN4908 series.

Feature Summary

• Integrates complementary NPN and PNP transistors with built-in bias resistors in a compact US6 package
• Simplifies circuit design by reducing the quantity of external components and manufacturing processes
• Suitable for switching, inverter, interface, and driver circuit applications

Applications

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

Procurement Notes

Verify the specific suffix LF(CT) against the manufacturer's latest documentation to confirm packaging format and compliance status. Ensure compatibility with RoHS3 regulations if required by the target application. Cross-reference the DigiKey part number RN4908LF(CTTR-ND or similar distributor codes for accurate sourcing channels. Confirm availability status as distribution data may vary over time.

Selection Notes

Select this component when a compact solution requiring both NPN and PNP switching capabilities is needed. The integrated bias resistors eliminate the need for external base drive components, saving board space. Verify that the 50V voltage rating and 100mA current capacity meet the specific load requirements of the intended switching or interface application.

Part Context

This component belongs to the Toshiba RN4908 series of digital transistors. These devices are designed using a Silicon PCT (Process Complementary Transistor) technology. The series is characterized by its small footprint and high integration level, making it suitable for portable electronics and space-constrained designs where multiple discrete transistors would otherwise be required.

Replacement Considerations

Potential substitutes include other Toshiba RN49xx series arrays such as RN4904, LF or RN4906, LF, provided the pinout and electrical characteristics match the specific NPN/PNP configuration and resistance values required by the circuit design.