MMDT5111W

Overview

The MMDT5111W is a surface-mount digital PNP transistor manufactured by Diotec Semiconductor, housed in an SOT-323 package. It integrates bias resistors to simplify circuit design and reduce component count. Key electrical ratings include a collector-emitter voltage of -50 V, a continuous collector current of -100 mA, and a total power dissipation of 200 mW at 25°C ambient temperature. The device features a typical DC current gain (GI) of 35 at -IC = 10 mA and -VCE = 5 V. Internal resistor values are R1 = 10 kΩ and R2 = 47 kΩ. The transition frequency is typically 250 MHz. Operating temperatures range from -55°C to +150°C.

Feature Summary

• Integrates bias resistors for cost and space savings
• Compliant with RoHS, REACH, and Conflict Minerals regulations
• Available in AEC-Q101 compliant (-Q) and qualified (-AQ) versions

Applications

• Digital controls
• Switching applications
• Signal processing

Procurement Notes

Verify the specific suffix when ordering. The base model MMDT5111W represents the standard commercial/industrial grade. Select the -Q suffix for AEC-Q101 compliance or the -AQ suffix for AEC-Q101 qualification if automotive standards are required. Confirm packaging details such as tape and reel quantities directly with the manufacturer or distributor before finalizing orders.

Selection Notes

Select this component for designs requiring a compact PNP digital transistor with integrated biasing. Ensure the -50 V voltage rating and -100 mA current capacity meet the load requirements. Consider the -Q or -AQ variants only if the application demands adherence to automotive reliability standards defined by AEC-Q101. Verify thermal management capabilities given the 200 mW power dissipation limit.

Part Context

The MMDT5111W belongs to the MMDT5110W through MMDT511NW series from Diotec Semiconductor. This family offers various combinations of internal bias resistors within the same SOT-323 footprint. The marking code for the MMDT5111W is AB. Other members in this series include MMDT5110W, MMDT5112W, MMDT5113W, MMDT5114W, and MMDT511NW.

Replacement Considerations

Direct substitutes within the same Diotec series include MMDT5110W, MMDT5112W, MMDT5113W, MMDT5114W, and MMDT511NW, provided their specific resistor ratios match the circuit requirements. Cross-manufacturer replacements must be verified against pinout compatibility, voltage ratings, and current handling capabilities.