MUN2134T1G

Overview

The MUN2134T1G is a single PNP Digital Transistor (BRT) manufactured by onsemi, designed to replace discrete transistor and resistor networks. It integrates a monolithic bias network consisting of a series base resistor and a base-emitter resistor within an SC-59 package. Key electrical parameters include a maximum collector-emitter voltage (VCEO) of 50 V, a continuous collector current of 100 mA, and a power dissipation of 230 mW. The device features a typical input resistance of 22 kOhms with a resistor ratio of 0.47. It operates within a temperature range of -55°C to +150°C and guarantees a minimum DC current gain (hFE) of 80.

Feature Summary

• Integrates a single PNP transistor with a monolithic bias network comprising two resistors to simplify circuit design.
• Reduces board space and component count by eliminating the need for external discrete biasing components.
• Provides high DC current gain and low saturation voltage for efficient switching applications.

Applications

• General-purpose switching circuits in consumer electronics.
• Driver stages for relays, solenoids, and small motors.
• Logic level translation and interface buffering between microcontrollers and peripheral devices.

Procurement Notes

Verify the specific ordering suffix and manufacturing date code against the latest onsemi datasheet to ensure compliance with current RoHS and halogen-free standards. Confirm that the SC-59 package dimensions match the target PCB footprint requirements. Check for any automotive qualification markings if the application requires AEC-Q101 compliance, as standard commercial grades may differ from qualified variants.

Selection Notes

Select this component when a PNP digital transistor with a 22 kOhm base resistor is required. Ensure the application voltage does not exceed the 50 V VCEO rating and the load current remains within the 100 mA limit. Consider the thermal constraints of the SC-59 package, which limits power dissipation to 230 mW, making it suitable for low-power switching tasks rather than high-current loads.

Part Context

This part belongs to the MUN2134 series of Bipolar Transistors with Built-in Bias Resistors. It is functionally similar to other BRTs in the family but distinguished by its specific internal resistor values and PNP polarity. The T1G suffix indicates tape-and-reel packaging and lead-free composition, aligning with modern environmental manufacturing standards for surface-mount assembly.

Replacement Considerations

Direct pin-compatible substitutes include the MMUN2134LT1G, which uses an SOT-23-3 package with slightly different thermal characteristics. Other functional equivalents in the same series include the MUN2131T1G or MUN2132T1G, though these have different internal resistor ratios and hFE gains, requiring circuit re-evaluation before substitution.