2SD2142KT146

Single Bipolar Transistors Overview

The 2SD2142KT146 is a high-gain NPN Darlington transistor manufactured by Rohm Semiconductor. It features a maximum collector-emitter voltage of 30V and a continuous collector current of 300mA, with a power dissipation rating of 200mW. The device offers a minimum DC current gain (hFE) of 5000 at VCE=3V, IC=10mA, and 10000 at VCE=5V, IC=100mA. Its transition frequency is specified at 200MHz. Packaged in an SMT3 (TO-236/SC-59/SOT-23-3) surface-mount case, it operates within a junction temperature range up to 150°C.

Single Bipolar Transistors Feature Summary

• High DC current gain configuration utilizing Darlington topology for amplified signal processing
• Compact surface-mount footprint compatible with standard TO-236 and SC-59 land patterns
• Low saturation voltage characteristic enabling efficient switching performance

Single Bipolar Transistors Applications

• General-purpose high-gain amplifier circuits
• Power amplification stages in consumer electronics
• Driver circuits for low-power loads

Single Bipolar Transistors Procurement Notes

Verify the complete part number including the KT146 suffix to ensure correct taping specifications and reel quantity. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into the manufacturing process. Ensure design compatibility with the specified SMT3 package dimensions and thermal characteristics.

Single Bipolar Transistors Selection Notes

Select this component when high current gain is required in a minimal surface-mount area. The Darlington structure provides significant amplification but may exhibit higher saturation voltage compared to single-transistor alternatives. Evaluate thermal management needs given the 200mW power dissipation limit in the small outline package.

Single Bipolar Transistors Part Context

This device belongs to Rohm's line of high-gain amplifier transistors designed for general electronic applications. It serves as a surface-mount alternative to through-hole packages, facilitating automated assembly processes. The product family emphasizes energy efficiency and reliability for consumer and industrial equipment.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include other NPN Darlington transistors in SOT-23 or SC-59 packages with comparable 30V ratings and similar hFE ranges. Verify pinout compatibility and thermal resistance values before substitution.