MMBTRA104SS

Overview

The MMBTRA104SS is a surface-mount digital PNP transistor manufactured by Diotec Semiconductor, housed in an SOT-23 (TO-236) package. It integrates bias resistors to simplify circuit design and reduce component count. Key electrical parameters include a maximum output voltage of -50 V, a continuous collector current of -100 mA, and a power dissipation rating of 200 mW at 25°C ambient temperature on a PCB with 3 mm² copper pads per terminal. The device features built-in base resistor R1 and emitter resistor R2, both valued at 47 kOhms. DC current gain is specified at a minimum of 80 under conditions of -5 V and -10 mA. Transition frequency reaches 200 MHz at -10 V and -5 mA.

Feature Summary

• Integrates dual bias resistors to minimize board space and assembly costs
• Compliant with RoHS directives without exemptions and REACH regulations
• Includes SPICE models and STEP files for simulation and mechanical integration

Applications

• Digital control circuits
• Signal processing applications
• General switching functions

Procurement Notes

Verify the specific suffix when ordering. The standard version is commercial/industrial grade. Suffix -Q indicates AEC-Q101 compliance, while -AQ denotes qualification status. Confirm availability of automotive-grade variants if required for your application environment. Ensure the datasheet matches the exact part number variant requested.

Selection Notes

Select this component for single-channel PNP switching tasks requiring integrated biasing. Verify that the 47 kOhm internal resistance values align with the logic drive requirements. Check thermal constraints as power dissipation depends on PCB copper pad area. Consider the -50 V voltage limit relative to the load supply. Evaluate transition frequency needs against the 200 MHz specification.

Part Context

This part belongs to the MMBTRA101SS through MMBTRA106SS series from Diotec Semiconductor. These devices share the same physical package and general electrical limits but differ in internal resistor ratios and values. The series provides various input impedance options for different logic families. All members utilize the SOT-23 footprint for compact surface-mount implementation.

Replacement Considerations

Cross-reference other SMD digital PNP transistors with identical pinouts and similar resistor values. Verify that substitute components meet the -50 V and -100 mA ratings. Ensure the replacement offers comparable hFE and transition frequency specifications.