2SA1797T100P

Single Bipolar Transistors Overview

The 2SA1797T100P is a PNP silicon small signal bipolar transistor manufactured by ROHM Semiconductor. It features a collector-emitter voltage (VCEO) of -50V and a continuous collector current (IC) of -3A. The device operates with a maximum power dissipation of 0.5W at 25°C ambient temperature, rising to 2W when mounted on a specified ceramic board. Key electrical characteristics include a minimum DC current gain (hFE) of 82 and a transition frequency (fT) of 200MHz. The component utilizes an MPT3 surface-mount package.

Single Bipolar Transistors Feature Summary

• Low saturation voltage capability for efficient switching performance.
• Excellent DC current gain characteristics across operating ranges.
• Designed as a complementary pair to the 2SC4672 NPN transistor.

Single Bipolar Transistors Applications

• General-purpose audio visual equipment
• Office automation equipment
• Communication devices
• Electronic appliances

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix T100 against official ROHM documentation to confirm the basic ordering unit and packaging configuration. Ensure the hFE binning code marked on the device matches the required gain specifications for the intended circuit design. Confirm RoHS compliance status through the manufacturer's latest product release notices before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component for applications requiring a high-current PNP switch or amplifier stage paired with an NPN counterpart. Consider the thermal resistance limitations when designing for continuous operation without adequate heatsinking. Evaluate the safe operating area curves to ensure pulse currents do not exceed the single-pulse limits defined in the datasheet specifications.

Single Bipolar Transistors Part Context

This part belongs to the ROHM general-use small signal transistor family designed for standard electronic equipment. It serves as the PNP complement to the 2SC4672 NPN transistor, facilitating push-pull or differential amplifier configurations. The MPT3 package provides a compact footprint suitable for surface-mount assembly processes common in modern consumer electronics manufacturing.

Single Bipolar Transistors Replacement Considerations

The 2SC4672 is documented as the complementary NPN partner. Verify pinout compatibility and absolute maximum ratings when substituting with other -50V, -3A PNP transistors from different manufacturers.

Single Bipolar Transistors FAQ

What is the maximum collector-emitter saturation voltage?

The maximum VCE(sat) is -0.35V when measured at IC/IB = -1A / -50mA.

How does the mounting surface affect power dissipation?

Power dissipation increases from 0.5W to 2W when the device is mounted on a 40 x 40 x 0.7mm ceramic board.

Is this component suitable for automotive use?

No, the datasheet specifies it is intended for general-use electronic equipment and is not designed for radiation tolerance or extreme reliability requirements typical of automotive applications.