MMBTRA105SS

Overview

The MMBTRA105SS is a surface-mount digital PNP transistor from Diotec Semiconductor, housed in an SOT-23 (TO-236) package. It integrates bias resistors to reduce component count and board space. Key electrical ratings include a maximum output voltage of -50 V, a continuous output current of -100 mA, and a power dissipation of 200 mW. The device operates within a junction temperature range of -55°C to +150°C. Internal resistor values are typically 2.2 kΩ for R1 and 47 kΩ for R2, yielding a resistance ratio between 0.026 and 0.087. The DC current gain is specified at a minimum of 80 under standard test conditions.

Feature Summary

• Integrates bias resistor combinations to achieve cost and space savings
• Compliant with RoHS directives without exemptions
• Adheres to REACH regulations and conflict mineral standards

Applications

• Digital controls
• Switching applications
• Signal processing

Procurement Notes

Verify the specific ordering suffix when purchasing. Standard versions lack automotive qualification, while suffixes such as -Q indicate AEC-Q101 compliance and -AQ indicates ongoing qualification. Confirm that the supplier provides official datasheets matching the exact part number variant to ensure correct resistor ratios and reliability grades.

Selection Notes

Select this component for low-voltage digital switching where integrated biasing simplifies circuit design. Ensure the required input voltage range aligns with the typical limits of -5 V to +12 V. Verify that the 200 mW power dissipation rating is sufficient for the target thermal environment on the PCB.

Part Context

This component belongs to the MMBTRA10x series of SMD digital PNP transistors manufactured by Diotec Semiconductor. The series shares common mechanical data and general features, with variations primarily defined by internal resistor values and specific automotive qualification suffixes.

Replacement Considerations

Direct substitutes within the same family include MMBTRA101SS through MMBTRA106SS. When replacing, verify that the internal resistor configuration matches the original circuit requirements.