2SC3906KT146S

Single Bipolar Transistors Overview

The Rohm Semiconductor 2SC3906KT146S is a single NPN silicon small-signal bipolar junction transistor designed for surface-mount applications. It operates within the SOT-346 (SC-59) package, featuring three terminals with dimensions of 3mm length and 1.3mm height. The device supports a maximum collector current of 50 mA and withstands collector-emitter and collector-base breakdown voltages of 120 V each. Key electrical characteristics include a minimum DC current gain of 180 at specified test conditions, a transition frequency of 140 MHz, and a maximum power dissipation of 200 mW. The component functions reliably up to a maximum junction temperature of 150°C.

Single Bipolar Transistors Feature Summary

• High voltage capability with 120 V collector-emitter and collector-base breakdown ratings suitable for high-voltage amplifier stages.
• Compact surface-mount construction in the SOT-346 (SC-59) package, facilitating automated assembly and space-constrained designs.
• Complementary PNP configuration available through the 2SA1579 series for matched circuit requirements.

Single Bipolar Transistors Applications

• High voltage amplifier circuits
• General purpose switching applications

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix against official Rohm documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity level prior to integration. Ensure the source document explicitly lists the part number as active or recommended for new designs, as availability status may vary by region and distributor.

Single Bipolar Transistors Selection Notes

Select this component when a compact NPN transistor requires high voltage tolerance exceeding standard low-voltage alternatives. The 120 V rating distinguishes it from common 40 V or 50 V variants. Verify that the 50 mA current limit and 200 mW power dissipation align with the thermal and load requirements of the target application circuit.

Single Bipolar Transistors Part Context

This transistor belongs to the 2SC3906K series, which includes complementary PNP types such as the 2SA1579. The series is characterized by high breakdown voltage and small outline packages like UMT3 and SMT3. It serves as a specialized alternative to general-purpose transistors where higher voltage handling is necessary within a limited footprint.

Single Bipolar Transistors Replacement Considerations

The 2SC4102T106S is documented as a similar specification replacement within the same manufacturer portfolio.