UMB2NTN

Overview

The UMB2NTN is a dual pre-biased PNP digital transistor manufactured by ROHM Semiconductor. It integrates two independent PNP transistors with built-in biasing resistors in a compact SMD package. Key electrical parameters include a collector-emitter breakdown voltage (VCEO) of -50 V, a continuous collector current (Ic) of -100 mA, and a maximum power dissipation (Pd) of 150 mW. The device features a typical input resistance (R1) of 47 kOhms and an emitter-base resistance (R2) of 47 kOhms. It operates up to a transition frequency of 250 MHz and has a minimum DC current gain (hFE) of 68 at Ic = 5 mA and Vce = -5 V.

Feature Summary

• Integrates two PNP transistors with internal biasing resistors to simplify circuit design
• Eliminates the need for external base resistors, reducing component count and PCB area
• Provides high-speed switching capabilities suitable for digital signal applications

Applications

• Digital logic level shifting and buffering
• Switching circuits for microcontroller I/O expansion
• Driver stages for small-signal loads

Procurement Notes

Verify the specific ordering suffix to confirm packaging type, such as tape-and-reel quantities. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Ensure the part number matches the required voltage and current ratings for the target application before procurement.

Selection Notes

Select this component when a dual PNP configuration with integrated biasing is required in a minimal footprint. Compare the 47 kOhm input resistance against other models if different drive currents are needed. Verify that the -50 V rating and -100 mA current capacity exceed the maximum operational requirements of the circuit.

Part Context

The UMB2NTN belongs to the UMB2 series of complex transistors from ROHM. These devices are designed to replace multiple discrete components, offering space savings in portable electronics. The series typically includes various resistor combinations and transistor polarities to suit different logic interface needs.

Replacement Considerations

Direct substitutes may include other dual PNP digital transistors in the SOT-363/UMT6 package with similar electrical characteristics. Verify pin compatibility and resistor values before substitution. Alternative part numbers should be confirmed through official cross-reference data.