UMF20NTR

Overview

The UMF20NTR is a digital transistor manufactured by ROHM Semiconductor, housed in a SOT-363-6 surface-mount package. It features a dual configuration with complementary NPN and PNP transistors. Key electrical specifications include a maximum collector-emitter voltage of 50V for the NPN section and 30V for the PNP section. The device supports continuous collector currents of 100mA for both polarities. Typical input resistance is 22 kOhms, with a typical resistor ratio of 2.1. Power dissipation is rated at 150mW, and the maximum operating temperature reaches +150°C.

Feature Summary

• Integrates complementary NPN and PNP transistors within a single compact surface-mount package to reduce component count.
• Includes built-in biasing resistors to simplify circuit design and eliminate external resistor requirements.
• Offers high DC current gain characteristics suitable for switching applications.

Applications

• General-purpose signal switching circuits
• Driver circuits for small loads
• Logic level translation interfaces

Procurement Notes

Verify the specific ordering suffix and tape-and-reel quantity against the manufacturer's latest datasheet before finalizing orders. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Ensure storage conditions adhere to moisture sensitivity levels specified in the package data to prevent handling damage during assembly.

Selection Notes

Select this component when a complementary NPN/PNP pair is required in a minimal footprint. Compare the 22 kOhm input resistance against circuit drive requirements. Verify that the 150mW power dissipation rating accommodates the thermal environment. Ensure the 50V/30V voltage ratings exceed the maximum expected load voltages for reliable operation.

Part Context

This part belongs to the UMF series of digital transistors from ROHM Semiconductor. These devices are designed to replace multiple discrete components, including transistors and biasing resistors, thereby saving board space. The UMF20NTR specifically utilizes the SOT-363 (UMT6) package, which is common for dual-transistor configurations in portable electronics.

Replacement Considerations

Check for direct pin-compatible alternatives such as the UMF32NTR if different voltage or current ratings are acceptable. Verify equivalent parts from other manufacturers like ON Semiconductor or Diodes Inc. that offer similar NPN/PNP dual configurations in SOT-363 packages.