CMKT3920 TR PBFREE

Overview

The CMKT3920 TR PBFREE is a dual small-signal NPN switching transistor manufactured by Central Semiconductor Corp. It integrates two independent NPN transistors within a space-saving SOT-363 (SC-88) package. The device supports a continuous collector current of 200 mA and a power dissipation of 350 mW at 25°C ambient temperature. Key electrical parameters include a collector-emitter breakdown voltage of 50 V, a collector-base breakdown voltage of 60 V, and an emitter-base voltage rating of 7.0 V. The transition frequency reaches 300 MHz, with a DC current gain ranging from 120 to 560 under specified test conditions.

Feature Summary

• Dual configuration containing two independent NPN transistors in a single compact surface-mount package
• Designed for high-speed general-purpose amplifier and switching applications
• Space-efficient ULTRAmini™ SOT-363 packaging reduces board footprint

Applications

• Load switching circuits
• Small signal amplification stages
• Lamp and relay drivers
• MOSFET gate drive interfaces

Procurement Notes

Verify the specific ordering suffix against official documentation before procurement. The PBFREE designation indicates lead-free plating compliance. Confirm that the TR suffix corresponds to the required tape and reel quantity for your manufacturing line. Ensure compatibility with RoHS regulations if applicable to your assembly process.

Selection Notes

Select this component when a dual NPN configuration is required in a minimal footprint. The 50V collector-emitter voltage and 200mA current capacity suit low-power switching tasks. Consider the 350mW power dissipation limit and thermal resistance when designing heat management strategies for dense PCB layouts.

Part Context

This part belongs to the CMKT series of dual transistor arrays produced by Central Semiconductor Corp. These devices are engineered to replace discrete dual-transistor solutions, offering improved consistency and reduced assembly complexity. The CMKT3920 specifically utilizes the SC-88/SOT-363 form factor common in portable electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.