UMG8NTR

Overview

The UMG8NTR is a dual NPN pre-biased digital transistor manufactured by ROHM Semiconductor. It integrates two NPN transistors with internal biasing resistors in a compact SOT-353 (UMT5) surface-mount package. Key electrical specifications include a collector-emitter breakdown voltage of 50V and a continuous collector current of 100mA. The device features a typical base input resistance of 4.7 kOhms and an emitter-base resistance of 47 kOhms, resulting in a resistor ratio of 10. It offers a minimum DC current gain (hFE) of 80 at 10mA and 5V, with a transition frequency of 250MHz. Power dissipation is rated at 150mW, and the maximum operating temperature reaches +150°C.

Feature Summary

• Integrates dual NPN transistors with built-in biasing resistors to simplify circuit design and reduce component count.
• Utilizes a compact SOT-353 (UMT5) surface-mount package suitable for space-constrained applications.
• Provides high-speed switching capabilities with a transition frequency of 250MHz.

Applications

• General-purpose switching circuits requiring dual NPN configuration.
• High-frequency signal processing applications up to 250MHz.
• Portable electronic devices where small form factor and low power consumption are critical.

Procurement Notes

Verify the specific ordering suffix to confirm packaging format, such as Reel or Cut Tape, as these affect handling but not electrical function. Ensure compatibility with RoHS directives if required by the target application. Cross-reference the manufacturer part number UMG8NTR with official datasheets to confirm pinout and thermal characteristics before finalizing procurement.

Selection Notes

Select the UMG8NTR when a dual NPN configuration with integrated biasing is needed in a small footprint. Consider the 4.7 kOhm base resistance and 10:1 resistor ratio for appropriate drive requirements. Evaluate the 50V voltage rating and 100mA current capacity against load demands. The 150mW power dissipation limit and +150°C max temperature should be assessed for thermal management in the intended environment.

Part Context

The UMG8NTR belongs to the UMG8N series of pre-biased transistors from ROHM Semiconductor. This series is designed to replace multiple discrete components, including transistors and resistors, thereby reducing board space and assembly costs. The UMT5 package is commonly used in consumer electronics and industrial control systems where reliability and miniaturization are prioritized.

Replacement Considerations

Check for direct substitutes within the same family, such as other variants in the UMG8N series with different resistor values. Verify pinout compatibility and electrical parameters like VCEO and IC before substituting with components from other manufacturers.