UMD25NTR

Overview

The UMD25NTR is a dual digital transistor from ROHM Semiconductor, integrating one NPN and one PNP pre-biased transistor within a compact SOT-363 (UMT6) surface-mount package. It features a typical input resistance of 2.2 kOhms and an emitter-base resistance of 47 kOhms for both polarities. The device supports a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA. Key electrical parameters include a DC current gain (hFE) minimum of 80 at 10 mA/5V, a transition frequency of 250 MHz, and a power dissipation rating of 150 mW. The saturation voltage is specified at 300 mV.

Feature Summary

• Integrates independent NPN and PNP digital transistor elements to reduce mounting area and cost by half compared to discrete components.
• Eliminates internal interference between transistor elements due to independent chip configuration within the UMT package.
• Compatible with standard automatic mounting machines designed for UMT3 packages, facilitating automated assembly processes.

Applications

• Inverter circuits
• Interface logic drivers
• General-purpose driver applications

Procurement Notes

Verify the specific ordering suffix to confirm the tape-and-reel packaging quantity of 3000 units per reel. Ensure the component meets RoHS compliance requirements for the target market. Confirm that the application environment remains within the specified operating temperature range of -55°C to +150°C. Validate that the design does not require automotive-grade certification, as this is a standard-level product not recommended for vehicle equipment.

Selection Notes

Select the UMD25NTR when space-constrained designs require both NPN and PNP switching capabilities in a single footprint. This component serves as a direct replacement for separate DTA123J and DTC123J devices. Consider its 250 MHz transition frequency for high-speed switching applications. Ensure the 100 mA current limit and 150 mW power dissipation align with the circuit's thermal and load requirements.

Part Context

This part belongs to the UMD series of composite digital transistors manufactured by ROHM Semiconductor. It utilizes the UMT6 package code, which corresponds to the SOT-363 physical outline. The series is designed to simplify circuit design by combining bias resistors with bipolar junction transistors, reducing the bill of materials and board space required for logic interface stages.

Replacement Considerations

The UMD25NTR is functionally equivalent to using separate DTA123J (NPN) and DTC123J (PNP) discrete digital transistors. Designers replacing discrete components should verify that the combined parasitic capacitance and thermal characteristics of the UMT6 package are acceptable for the specific application.