UMA2NTR

Overview

The UMA2NTR is a complex pre-biased transistor array manufactured by Rohm Semiconductor, housed in the UMT5 (SOT-353) surface-mount package. It integrates two PNP transistors with built-in biasing resistors to simplify digital circuit design. Key electrical specifications include a supply voltage of -50V and a collector current of -0.1A per channel. The device features dual input resistance options of 1kΩ or 47kΩ, paired with emitter-base resistances of 1kΩ or 47kΩ. Power dissipation is rated at 0.15W, with an operating temperature range from -55°C to +150°C.

Feature Summary

• Integrates two PNP transistors with internal biasing resistors within a compact footprint
• Provides simplified digital switching and amplification circuit configurations
• Supports high-temperature operation up to +150°C for robust performance

Applications

• Differential amplifier circuits
• High-frequency crystal oscillators
• Start-up circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific automotive qualification requirements if applicable, as standard grades may not be suitable for all vehicle applications. Ensure packaging details match project needs.

Selection Notes

Select this component when space-constrained designs require dual PNP logic functions. Compare equivalent single-transistor solutions like DTA144E to evaluate board area savings versus potential performance trade-offs. Verify that the integrated resistor values align with the target logic levels and drive requirements.

Part Context

This part belongs to Rohm's complex transistor series designed for miniaturization. It serves as a drop-in replacement for discrete dual-transistor setups, reducing component count. The UMT5 package allows for high-density PCB layouts compared to larger through-hole or standard SMD alternatives.

Replacement Considerations

DTA144E is listed as an equivalent single-part reference. Designers should verify pinout compatibility and electrical characteristics when substituting discrete components or alternative arrays.