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KST5087MTF is listed in the Single Bipolar Transistors range at ChipApex. The manufacturer field lists onsemi. Its product description is TRANS PNP 50V 0.05A SOT-23-3. Review the specifications below when checking this part for your BOM.
The KST5087MTF is a PNP bipolar junction transistor manufactured by onsemi, housed in an SOT-23 surface-mount package. It features a maximum collector current of 50 mA and a collector-emitter breakdown voltage of 50 V. The device exhibits a DC current gain (hFE) of at least 150 at 100 µA base current and 5 V collector voltage. Saturation voltage is specified at 300 mV under 1 mA base and 10 mA collector conditions. Power dissipation reaches 350 mW, with a transition frequency of 40 MHz.
Verify the exact part number against official onsemi documentation to confirm compatibility with system requirements. Ensure that the SOT-23 package dimensions align with the printed circuit board layout. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement decisions for production runs.
Select this component when a small-signal PNP transistor is required in an SOT-23 footprint. Consider the 50 V breakdown voltage and 50 mA current limits for appropriate load handling. Evaluate the thermal performance relative to the 350 mW power dissipation rating within the intended operating environment.
This device belongs to the general-purpose discrete transistor category from onsemi. It serves as a fundamental building block for analog and digital circuits requiring PNP switching or amplification capabilities in a compact form factor suitable for modern electronic assemblies.
Consult official substitution guides for equivalent PNP transistors in SOT-23 packages with matching electrical specifications. Verify pinout compatibility and thermal characteristics before implementing any alternative components in existing designs.
Explore related parts through Bipolar (BJT), Transistors, Discrete Semiconductor Products, all product categories.

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