PXTA42F

Single Bipolar Transistors Overview

The PXTA42 is an NPN high-voltage transistor manufactured by Nexperia, housed in a medium power SOT89 (SC-62) surface-mounted plastic package. It features a collector-emitter voltage rating of 300 V and a continuous collector current capacity of 100 mA, with a peak collector current limit of 200 mA. The device provides a minimum DC current gain (hFE) of 40 at VCE = 10 V and IC = 30 mA. Total power dissipation reaches 1.3 W at 25 °C ambient temperature, supported by a thermal resistance from junction to ambient of 96 K/W.

Single Bipolar Transistors Feature Summary

• High breakdown voltage capability for demanding circuit environments
• Medium power flat lead SMD plastic package design

Single Bipolar Transistors Applications

• Electronic ballast for fluorescent lighting
• LED driver for LED chain module
• High Intensity Discharge (HID) front lighting
• Hook switch for wired telecom
• Switch Mode Power Supply (SMPS)

Single Bipolar Transistors Procurement Notes

Verify the specific revision status against the latest official Nexperia documentation before finalizing designs. Confirm that the non-automotive qualification aligns with project requirements, as automotive applications require designated -Q variants. Ensure component authenticity through authorized supply channels to guarantee adherence to specified electrical characteristics and reliability standards.

Single Bipolar Transistors Selection Notes

Select this component when a robust NPN transistor with high voltage tolerance is required in a compact SOT89 footprint. Consider the 300 V collector-emitter rating and 100 mA current handling for switching or amplification tasks. Evaluate the thermal resistance parameters to ensure adequate heat dissipation within the target enclosure constraints without exceeding the 150 °C junction temperature limit.

Single Bipolar Transistors Part Context

This device belongs to Nexperia's portfolio of high-voltage transistors designed for general-purpose switching and amplification. It serves as a complement to the PXTA92 PNP variant, offering symmetrical options for push-pull configurations. The SOT89 package facilitates efficient mounting on printed-circuit boards while maintaining reliable performance in medium-power electronic assemblies.

Single Bipolar Transistors Replacement Considerations

Consult official Nexperia documentation for verified substitute part numbers. No direct cross-references are provided in the source material.

Single Bipolar Transistors FAQ

Is the PXTA42 suitable for automotive applications?

No, the PXTA42 is not automotive qualified. Customers requiring automotive-grade components should refer to Nexperia for alternative products specifically designated with the -Q suffix.

What is the maximum total power dissipation?

The total power dissipation is rated at 1.3 W when the ambient temperature is 25 °C or lower.