RN49A1(T5L,F,T)

Overview

The RN49A1(T5L,F,T) is a pre-biased bipolar junction transistor (BJT) array manufactured by Toshiba Semiconductor and Storage. It integrates one NPN and one PNP transistor within a single surface-mount package, featuring built-in bias resistors to simplify circuit design. The device supports a collector-emitter breakdown voltage of 50V and a continuous collector current of 100mA. Key electrical parameters include a transition frequency of 250MHz for the NPN section and 200MHz for the PNP section, with a maximum power dissipation of 200mW. Available in compact packages such as TSSOP6, SC88, and SOT363, it is designed for high-speed switching applications.

Feature Summary

• Integrated dual configuration combining one NPN and one PNP pre-biased transistor in a single component
• Built-in bias resistors eliminate external resistor requirements, reducing board space and assembly complexity
• High-speed switching capability supported by transition frequencies up to 250MHz
• Surface-mount construction available in small outline packages for automated manufacturing

Applications

• Digital logic interface circuits requiring level shifting or buffering
• Driver stages for relays, solenoids, or small motors
• Switching regulators and DC-DC converter control loops
• General-purpose digital switching in consumer electronics

Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm the exact internal resistance values and package variant. Ordering codes may include additional letters indicating tape-and-reel specifications or RoHS compliance status. Confirm availability through authorized distributors, as lead times vary by region. Ensure the selected part number matches the required pinout and thermal characteristics for the target application.

Selection Notes

Select this component when a complementary NPN-PNP pair is needed in a minimal footprint. Verify that the integrated base resistors match the driving source impedance and required base current. Check the power dissipation limits under the expected ambient temperature conditions. Consider the transition frequency requirements for the specific switching speed needed in the application circuit.

Part Context

This part belongs to the RN49xx series of pre-biased transistors from Toshiba. These devices are widely used in digital circuits where space saving and simplified design are priorities. The series offers various resistance combinations and package options to suit different voltage and current requirements in portable and industrial equipment.

Replacement Considerations

Check for direct equivalents in the RN49xx family with matching resistance values. Verify pin compatibility before substituting with other manufacturers' dual pre-biased transistors. Ensure the replacement meets the same voltage, current, and thermal ratings.