MMUN2134LT1G

Overview

The MMUN2134LT1G is a single PNP Digital Transistor (BRT) manufactured by onsemi, housed in an SOT-23-3 surface-mount package. It integrates a monolithic bias network consisting of two resistors with the transistor die. Key electrical parameters include a maximum collector-emitter voltage (VCEO) of 50 V and a continuous collector current of 100 mA. The device features a typical input resistance of 22 kOhms and a typical resistor ratio of 0.47. Minimum DC current gain (hFE) is specified at 80, with power dissipation rated at 246 mW. Operating temperature ranges from -55°C to +150°C.

Feature Summary

• Integrates a single PNP transistor with a monolithic bias network comprising series base and base-emitter resistors to replace discrete components.
• Designed for high-speed switching applications by eliminating external biasing circuitry requirements.
• Utilizes a compact SOT-23-3 surface-mount package suitable for space-constrained PCB layouts.

Applications

• General-purpose switching circuits
• Driver stages for logic interfaces
• Level shifting between different voltage domains

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm RoHS compliance status and specific lot traceability against the official datasheet specifications. Ensure storage conditions adhere to moisture sensitivity level guidelines to maintain solderability and long-term reliability during assembly processes.

Selection Notes

Select this component when a pre-biased PNP solution is required for simplified circuit design. The integrated resistor network reduces board space and component count compared to discrete BJT configurations. Verify that the 50 V breakdown voltage and 100 mA current rating align with the target application's electrical demands and thermal constraints.

Part Context

This part belongs to the MMUN21xxL series of digital transistors from onsemi. The series is engineered to provide cost-effective and reliable switching solutions by combining bipolar junction transistors with built-in bias resistors. These devices are widely used in consumer electronics and industrial control systems where compact form factors and reduced assembly complexity are prioritized.

Replacement Considerations

Cross-reference with other PNP BRTs in the SOT-23-3 package having similar VCEO and Ic ratings. Verify pinout compatibility and resistor values before substitution to ensure circuit functionality remains unchanged.