UMA6NTR

Overview

The UMA6NTR is a dual digital transistor from ROHM Semiconductor, featuring two PNP transistors in a UMT5 (SC-88A) surface-mount package. It operates with a collector-emitter voltage of -50V and a continuous collector current of -100mA per element. The device integrates 47kΩ input resistors to simplify circuit design. Key electrical characteristics include a DC current transfer ratio (hFE) minimum of 60 at -1mA/-0.5mA and a transition frequency of 250MHz. Total power dissipation is rated at 150mW, with an operating temperature range from -55°C to +150°C.

Feature Summary

• Integrates two DTA144T-equivalent PNP digital transistors within a single compact footprint.
• Includes built-in biasing resistors to reduce external component count and board space.
• Designed for high-speed switching applications with a transition frequency of 250MHz.

Applications

• Audio visual equipment signal processing
• Office automation control circuits
• Communications device interface logic

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging containing 3000 units per basic ordering unit. Confirm RoHS compliance status through official documentation before integration. Ensure the design accounts for the absolute maximum ratings, particularly the 120mW limit per individual element within the total 150mW package dissipation constraint.

Selection Notes

Select this component when a dual PNP configuration with integrated base resistors is required in a SC-88A form factor. Compare against single-transistor alternatives if only one channel is needed to optimize cost. Verify that the -50V rating meets the system's voltage requirements and that the 47kΩ internal resistance aligns with the driving source impedance.

Part Context

This part belongs to the EMA6/UMA6N series of emitter-common dual digital transistors manufactured by ROHM. It serves as a direct replacement for discrete resistor-biased configurations, offering a standardized solution for compact PCB layouts. The UMT5 package provides a small outline suitable for high-density mounting applications.

Replacement Considerations

The datasheet explicitly states equivalence to the DTA144T chip. Designers may consider DTA144T equivalents from other manufacturers if pin-compatible sourcing is required, provided electrical parameters such as hFE and VCE(sat) are verified against the UMA6NTR specifications.

FAQ

What is the maximum power dissipation per individual transistor element?

The absolute maximum rating specifies that 120mW per element must not be exceeded, even though the total package dissipation is rated at 150mW.

What is the typical value of the integrated input resistor?

The typical input resistance (R1) is 47 kΩ, with a specified range from 32.9 kΩ to 61.1 kΩ.

Is this component suitable for automotive safety-critical applications?

No. The appendix explicitly states that products listed are designed for ordinary electronic equipment and advises consulting sales representatives for equipment requiring extremely high reliability or endangering human life.