2SAR340QTR

Single Bipolar Transistors Overview

The 2SAR340QTR is a PNP bipolar junction transistor manufactured by ROHM Semiconductor. It features a collector-emitter voltage (VCEO) of -400 V and a continuous collector current (Ic) of -100 mA. The device utilizes silicon technology and is housed in an SOT-89-3 surface-mount package. Key electrical parameters include a collector-base voltage (VCBO) of -400 V, an emitter-base voltage (VEBO) of -7 V, and a power dissipation (Pd) of 500 mW. The DC current gain (hFE) ranges from a minimum of 82 to a maximum of 270 at specified test conditions. The component supports a maximum operating temperature of +150°C.

Single Bipolar Transistors Feature Summary

• High voltage capability with a -400 V collector-emitter breakdown rating suitable for high-voltage switching applications.
• Compact SMD form factor in an SOT-89-3 package designed for space-constrained surface-mount PCB layouts.
• Silicon construction engineered for reliable operation at elevated temperatures up to +150°C.

Single Bipolar Transistors Applications

• High-voltage switching circuits
• General-purpose amplification stages
• Power supply control loops

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'Q' against the official ROHM datasheet to confirm if it denotes a specific quality grade or tape-and-reel specification distinct from standard variants. Ensure the ordering part number matches the exact electrical and packaging requirements defined in the manufacturer's documentation before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with high voltage tolerance (-400 V) and moderate current handling (-100 mA) is required. The SOT-89-3 package offers a balance between thermal performance and board space efficiency. Verify that the hFE range meets the circuit's gain requirements and that the 500 mW power dissipation limit is sufficient for the intended thermal environment.

Single Bipolar Transistors Part Context

This component belongs to the ROHM 2SAR series of PNP bipolar transistors. The series is characterized by high voltage ratings and is commonly used in industrial and consumer electronics where compact, high-voltage switching elements are necessary. The 2SAR340 variant specifically targets applications requiring robust performance under high voltage stress.

Single Bipolar Transistors Replacement Considerations

Consult the official ROHM replacement guide for verified substitutes. Cross-reference key parameters such as VCEO, Ic, package type, and hFE when evaluating alternative components to ensure functional compatibility without modifying the existing circuit design.