UMH31NS-TP

Overview

The UMH31NS-TP is a dual NPN digital transistor manufactured by Micro Commercial Components (MCC). It integrates two NPN transistors with built-in biasing resistors into a single SOT-363S surface-mount package. The device features a typical input resistance of 1 kOhm and a resistor ratio of 10. Key electrical specifications include a maximum power dissipation of 300 mW, an output voltage of -300 mV, and a minimum DC collector/base gain (hfe) of 80. It operates within a temperature range of -55°C to +150°C and supports surface mount installation.

Feature Summary

• Integrates dual NPN transistors with pre-biased resistors for simplified circuit design
• Utilizes compact SOT-363S surface-mount packaging for space-constrained applications
• Provides high thermal stability with an extended operating temperature range up to +150°C

Applications

• General-purpose switching circuits requiring dual NPN logic control
• Interface drivers for microcontrollers and digital logic gates
• Level shifting and buffer stages in embedded systems

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with Micro Commercial Components or authorized distributors before procurement. Confirm that the SOT-363S pinout matches the target PCB footprint design. Ensure the supplier provides original manufacturer documentation to validate authenticity and traceability for quality assurance purposes.

Selection Notes

Select this component when a dual NPN configuration with integrated base resistors is required to reduce external component count. The 1 kOhm input resistance suits direct interfacing with standard logic outputs. Consider the 300 mW power dissipation limit and SOT-363S thermal characteristics during thermal management planning for dense layouts.

Part Context

This part belongs to the MCC UMH series of digital transistors, which are designed to replace multiple discrete components. The UMH31NS-TP specifically offers dual NPN functionality in a small outline transistor package, distinguishing it from single-transistor variants or PNP configurations within the same product family.

Replacement Considerations

Potential substitutes include other dual NPN digital transistors in SOT-363 packages such as the DTC143EUA or BRT113A, provided pin compatibility and electrical parameters like hfe and power dissipation meet the design requirements.