MUN5135T1

Overview

The MUN5135T1 is a PNP Bias Resistor Transistor (BRT) from onsemi, housed in an SC-70/SOT-323 package. It integrates a single transistor with a monolithic bias network consisting of a series base resistor and a base-emitter resistor. Key electrical parameters include a maximum collector current of 100 mA, a collector-emitter voltage of 50 V, and a total device dissipation of 202 mW at 25°C. The internal resistors are R1 = 2.2 kΩ and R2 = 47 kΩ.

Feature Summary

• Integrates a PNP transistor with a monolithic bias network to replace discrete components
• Reduces board space and component count by combining the transistor and two resistors
• SC-70/SOT-323 package designed for low power surface mount applications

Applications

• General-purpose switching circuits
• Driver circuits for logic interfaces
• Replacement for discrete transistor and resistor networks

Procurement Notes

Verify the specific ordering suffix when purchasing. The provided datasheet lists the Pb-Free version as MUN5135T1G. Confirm whether the 'T1' suffix corresponds to the standard 3,000-unit tape and reel packaging or if a different suffix is required for alternative shipping quantities.

Selection Notes

Select this component when a compact PNP digital transistor solution is needed. Ensure the application requires a 2.2 kΩ series base resistor and a 47 kΩ base-emitter resistor. Verify that the 50 V collector-emitter voltage and 100 mA continuous current ratings meet the circuit requirements.

Part Context

This part belongs to the MUN51xxT1 Series of Bias Resistor Transistors. These devices are designed to simplify circuit design by integrating the biasing resistors directly onto the silicon die alongside the transistor element.

Replacement Considerations

Direct replacements within the same series include SMUN5135T1G and NSVMUN5135T1G. Other BRTs with similar resistor values should be cross-referenced carefully against the official datasheet tables.