UMH18N-TP

Overview

The UMH18N-TP is a dual NPN pre-biased digital transistor manufactured by Micro Commercial Components. It integrates two NPN transistors with internal base resistors in a compact SOT-363 surface-mount package. The device features a collector-emitter voltage rating of 50V and a continuous collector current capability of 100mA. Typical input resistance is specified at 4.7 kΩ, with a resistor ratio of 2.1. The component supports a transition frequency of 250MHz and dissipates up to 200mW of power, making it suitable for high-speed switching applications requiring minimal external components.

Feature Summary

• Integrates dual NPN transistors with built-in base biasing resistors for simplified circuit design
• Optimized for high-frequency switching operations with a 250MHz transition frequency
• Compact SOT-363 surface-mount packaging reduces board space requirements

Applications

• Digital signal processing circuits
• Logic level shifting interfaces
• Switching applications in consumer electronics

Procurement Notes

Verify the exact datasheet version from Micro Commercial Components to confirm pinout compatibility and thermal characteristics. Ensure that the SOT-363 footprint matches the PCB layout specifications. Cross-reference the typical resistor values against specific application requirements to guarantee proper biasing conditions under varying load scenarios.

Selection Notes

Select this component when dual NPN switching functionality with integrated biasing is required in a small form factor. Consider the 50V voltage rating and 100mA current limit relative to the target circuit loads. Evaluate the 4.7kΩ typical input resistance to ensure compatibility with driving source impedance levels in digital logic systems.

Part Context

This part belongs to MCC's UMH series of pre-biased digital transistors. These devices combine transistors and resistors into single packages to reduce assembly complexity. The UMH18N-TP specifically utilizes the SOT-363 package, offering a solution for applications needing multiple switching elements in limited space compared to discrete component arrangements.

Replacement Considerations

Check for direct equivalents such as other dual NPN pre-biased transistors in SOT-363 packages with matching 50V ratings and similar resistor values. Verify electrical parameter alignment before substitution to maintain circuit performance integrity.