UMH14NTR

Overview

The UMH14NTR is a dual NPN digital transistor array manufactured by ROHM Semiconductor. It integrates two NPN transistors with built-in bias resistors in a compact SMT package. Key electrical specifications include a collector-emitter voltage (VCEO) of 50 V and a continuous collector current of 100 mA. The device features a typical input resistance of 10 kOhms and a DC current gain (hfe) minimum of 100 at 1 mA and 5 V. It operates up to a maximum frequency of 250 MHz with a power dissipation rating of 150 mW and a maximum operating temperature of +150°C.

Feature Summary

• Dual NPN configuration with integrated bias resistors eliminates external resistor requirements for basic switching circuits.
• High-speed switching capability supports operation at frequencies up to 250 MHz.
• Compact surface-mount packaging facilitates high-density PCB layout.

Applications

• General-purpose signal inversion and buffering
• Driver circuits for small-signal loads
• Logic level translation interfaces

Procurement Notes

Verify the specific suffix 'NTR' against the manufacturer's official datasheet to confirm tape-and-reel packaging and exact binning. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the full part number with authorized distributors to confirm availability and authenticity, as suffixes may indicate variations in packaging or testing standards.

Selection Notes

Select this component when a dual NPN switch with fixed internal biasing is required. Verify that the 10 kOhm input resistance aligns with the driving source impedance. Confirm that the 50 V voltage rating and 100 mA current capacity exceed the application's peak demands. Consider the SOT-363/UMT6 package size constraints during PCB footprint design.

Part Context

The UMH14NTR belongs to ROHM's series of pre-biased transistor arrays. These devices combine transistors and resistors into single packages to reduce board space and assembly time. This specific model provides two NPN channels, offering a cost-effective alternative to discrete transistor-resistor combinations in compact electronic designs.

Replacement Considerations

Potential substitutes include other dual NPN digital transistors with similar 50V/100mA ratings and SOT-363 footprints, such as the DTC143Z-based arrays from other manufacturers. Verify pinout compatibility and electrical parameters before substitution.