UMA10NTR

Overview

The UMA10NTR is a dual NPN pre-biased transistor array manufactured by ROHM Semiconductor. It integrates two NPN transistors with internal biasing resistors within a compact UMT5 (SOT-353) surface-mount package. Key electrical specifications include a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA per element. The device features a typical input resistance of 2.2kΩ and an emitter-base resistance of 47kΩ. It offers a DC current gain (hFE) minimum of 80 at 10mA and 5V, with a transition frequency of 250MHz. Power dissipation is rated at 150mW, supporting operation up to a maximum junction temperature of +150°C.

Feature Summary

• Dual NPN configuration with integrated base and emitter-base resistors for simplified circuit design
• Compact UMT5 (SOT-353) surface-mount package suitable for space-constrained applications
• High-speed switching capability with a 250MHz transition frequency

Applications

• Differential amplifier circuits
• High-frequency crystal oscillators
• General-purpose switching and logic interface applications

Procurement Notes

Verify the specific ordering suffix against the official datasheet to ensure correct resistor values and packaging format. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer prior to procurement. Ensure storage conditions adhere to moisture sensitivity level requirements specified in the product documentation.

Selection Notes

Select the UMA10NTR when a dual NPN pre-biased solution is required in a small footprint. Compare internal resistor ratios against circuit requirements to ensure proper biasing. Verify that the 50V voltage rating and 100mA current capacity meet the load demands. Consider thermal management for the 150mW power dissipation limit in enclosed environments.

Part Context

The UMA10NTR belongs to ROHM's UM series of complex transistors, which combine discrete transistors with biasing networks. This series is designed to reduce component count and board space in digital and analog switching applications. The UMT5 package is part of ROHM's lineup of ultra-small surface-mount packages aimed at portable electronics and high-density PCB designs.

Replacement Considerations

Publicly documented equivalent single-part numbers include DTC123J. Designers should verify pin compatibility and internal resistor values when substituting with other manufacturers' dual NPN pre-biased transistors.