MMUN2115LT1G

Overview

The MMUN2115LT1G is a single PNP digital transistor manufactured by onsemi, designed to replace discrete biasing networks. It integrates a BJT with an internal base resistor of 10 kOhms within a compact SOT-23-3 surface-mount package. The device supports a maximum collector-emitter voltage (VCEO) of 50 V and a continuous collector current of 100 mA. It features a minimum DC current gain (hFE) of 160 and a power dissipation rating of 246 mW. The component operates reliably across a temperature range from -55°C to +150°C, ensuring stability in various electronic applications.

Feature Summary

• Integrates a PNP bipolar junction transistor with a built-in 10 kOhm base resistor to simplify circuit design.
• Provides high current gain capability with a minimum hFE of 160 for efficient switching performance.
• Utilizes a small SOT-23-3 footprint to maximize board space efficiency in surface-mount assemblies.

Applications

• General-purpose switching circuits requiring pre-biased PNP transistors.
• Interface logic level translation between microcontrollers and peripheral devices.
• Driver stages for low-power loads such as LEDs or relays.

Procurement Notes

Verify the specific ordering suffix LT1G to confirm the tape-and-reel packaging format and lead-free compliance status. Ensure that the procurement documentation explicitly references the onsemi manufacturer designation to avoid counterfeit components. Cross-reference the part number against the official datasheet to validate the 10 kOhm input resistance specification before finalizing purchase orders.

Selection Notes

Select this component when a PNP configuration with a 10 kOhm base resistor is required. Compare the 50 V voltage rating and 100 mA current limit against circuit demands. Consider the SOT-23-3 package dimensions for PCB layout constraints. Evaluate thermal management requirements based on the 246 mW power dissipation rating under expected operating conditions.

Part Context

This part belongs to the MMUN2115L series of pre-biased resistors transistors (BRTs). It shares the same package and electrical characteristics as other variants in the family but differs specifically in its integrated base resistance value. The series is designed to reduce component count and assembly time in digital switching applications.

Replacement Considerations

Direct substitutes include other onsemi BRTs with identical PNP polarity, 50 V rating, and 10 kOhm base resistance. Verify pinout compatibility and thermal performance before swapping with equivalent parts from other manufacturers.