KST4403MTF

Single Bipolar Transistors Overview

The KST4403MTF is a PNP epitaxial silicon transistor manufactured by onsemi, housed in an SOT-23 surface-mount package. It supports a maximum collector current of -600 mA and withstands collector-emitter and collector-base voltages of -40 V each. The device features a power dissipation rating of 350 mW at 25°C ambient temperature. Its current gain bandwidth product reaches 200 MHz, with a DC current gain ranging from 30 to 300 depending on the operating point. The component operates within a temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• PNP epitaxial silicon construction for general-purpose switching applications
• SOT-23 surface-mount footprint for compact circuit board integration
• High-speed switching capability with defined turn-on and turn-off times
• Wide operational temperature range suitable for diverse environments

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Low-power amplifier stages
• Driver circuits for logic interfaces

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status through the latest datasheet revision. Ensure the part number matches the updated nomenclature following the Fairchild Semiconductor integration into ON Semiconductor systems.

Single Bipolar Transistors Selection Notes

Select this component when a small-footprint PNP transistor is required for low-voltage switching tasks. Evaluate the thermal management requirements carefully due to the 350 mW power dissipation limit in the SOT-23 package. Compare the saturation voltage characteristics against load requirements to ensure efficient operation at the intended collector currents.

Single Bipolar Transistors Part Context

This device belongs to the KST series of small-signal transistors originally developed by Fairchild Semiconductor. Following corporate integration, the product line was adopted by ON Semiconductor, resulting in updates to part numbering conventions where underscores were replaced by hyphens. The KST4403 serves as the PNP counterpart to the NPN KST4401.

Single Bipolar Transistors Replacement Considerations

• KST4403LT1G
• MMBT4403

Single Bipolar Transistors FAQ

What is the pin configuration for the KST4403MTF?

Viewed from the top of the component, Pin 1 is Base, Pin 2 is Emitter, and Pin 3 is Collector.

How does the underscore naming convention affect this part?

Due to system integration between Fairchild and ON Semiconductor, older part numbers containing underscores (e.g., KST4403_MTF) have been updated to use hyphens (e.g., KST4403-MTF).

What are the absolute maximum ratings for voltage?

The maximum collector-base voltage (VCBO) is -40 V, the maximum collector-emitter voltage (VCEO) is -40 V, and the maximum emitter-base voltage (VEBO) is -5 V.