UMD22NFHATR

Overview

The UMD22NFHATR is a dual digital transistor manufactured by ROHM Semiconductor, featuring one NPN and one PNP bipolar junction transistor (BJT) with built-in bias resistors. It is housed in a compact SOT-363 (UMT6) surface-mount package. The device is qualified under AEC-Q101 for automotive applications. Key electrical parameters include a maximum collector-emitter voltage of 50V, a continuous collector current of 100mA, and a power dissipation rating of 150mW. The integrated base resistor (R1) is 4.7 kΩ, while the emitter-base resistor (R2) is 47 kΩ. The DC current gain (hFE) is specified at a minimum of 80 at 10mA and 5V, with a transition frequency of 250MHz.

Feature Summary

• Dual configuration integrating one NPN and one PNP transistor within a single compact SOT-363 package to reduce board space.
• Built-in bias resistors eliminate external components, simplifying circuit design and reducing assembly complexity.
• AEC-Q101 qualification ensures reliability and suitability for demanding automotive electronic environments.

Applications

• Automotive logic switching circuits requiring high reliability.
• Driver circuits for small-signal loads in vehicle electronics.
• General-purpose digital switching applications in consumer and industrial equipment.

Procurement Notes

Verify the complete part number including suffixes such as TR for reel packaging when sourcing. Confirm that the specific revision matches the required AEC-Q101 automotive grade specifications. Ensure compatibility with standard SMT reflow processes compatible with the SOT-363 footprint. Cross-reference datasheet revisions to confirm pinout consistency if replacing older variants.

Selection Notes

Select this component when a dual NPN/PNP configuration with fixed internal biasing is required in a minimal footprint. The 4.7kΩ input resistance suits general logic interfacing. Consider the 150mW power dissipation limit for thermal management in dense layouts. Verify that the 50V voltage rating meets the system's operating requirements.

Part Context

This component belongs to ROHM's UMD series of complex transistors, which integrate bias resistors directly onto the silicon die. The UMT6/SOT-363 package is a standard industry form factor for dual transistors, facilitating automated placement. The NFHA suffix typically denotes automotive-grade qualification and specific material compliance standards defined by the manufacturer.

Replacement Considerations

Direct functional equivalents may include the DTA143Z (NPN) and DTB143Z (PNP) discrete pairs, though these require two packages. Other dual digital transistors from different manufacturers must be checked for matching R1/R2 values, hFE ranges, and package dimensions to ensure mechanical and electrical compatibility without redesign.