PN4249_D74Z

Single Bipolar Transistors Overview

The PN4249_D74Z is a PNP general-purpose amplifier and switch manufactured by onsemi, originally from Fairchild Semiconductor. It operates with a collector current up to 500 mA and withstands a collector-emitter voltage of 60 V. The device features a DC current gain (hFE) ranging from 100 to 300 at 100 µA and 5 V. Total power dissipation is rated at 625 mW, derating by 5.0 mW/°C above 25°C. Thermal resistance is 83.3 °C/W junction-to-case and 200 °C/W junction-to-ambient. It functions within a temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• Designed for general-purpose amplification and switching applications requiring moderate collector currents.
• Utilizes Process 68 technology for reliable performance in standard discrete semiconductor environments.
• Provides high DC current gain suitable for signal amplification tasks.

Single Bipolar Transistors Applications

• General purpose amplifiers
• Electronic switches

Single Bipolar Transistors Procurement Notes

Verify the manufacturer status carefully as this component was originally produced by Fairchild Semiconductor before acquisition by onsemi. Confirm that the D74Z suffix corresponds to the specific TO-92 Ammo packaging configuration required for your assembly line. Check for any product change notices or obsolescence announcements related to the PN4249 series to ensure long-term availability compatibility.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with a 60 V breakdown voltage and 500 mA continuous collector current capability is needed. Ensure the application stays within the 625 mW total device dissipation limit and accounts for thermal resistance values during design. Verify that the operating temperature range of -55°C to +150°C meets the environmental requirements of the target system.

Single Bipolar Transistors Part Context

This part belongs to the PN4249 family of PNP transistors. It shares characteristics with the PN200 series. The D74Z suffix indicates a specific tape and reel ammo pack configuration containing 2,000 units per box. This packaging style is distinct from bulk or standard reel options available for the same base device.

Single Bipolar Transistors Replacement Considerations

Consult the datasheet for characteristics similar to the PN200. Verify pinout compatibility if substituting with other PNP transistors in the TO-92 package. Ensure replacement parts meet the same voltage, current, and thermal specifications.