PN4917

Single Bipolar Transistors Overview

The PN4917 is a PNP general-purpose amplifier and switch manufactured by onsemi, sourced from Process 66. It features a collector-emitter voltage (VCEO) of 30 V and a continuous collector current (IC) of 200 mA. The device operates within a junction temperature range of -55 to +150 °C with a total device dissipation of 625 mW at 25 °C. Electrical characteristics include a DC current gain (hFE) ranging from 30 to 300 depending on the collector current, and a collector-emitter saturation voltage (VCE(sat)) of 0.30 V at IC = 50 mA. Small-signal performance includes an output capacitance (Cob) of 4.5 pF and a noise figure of 6.0 dB at 100 MHz.

Single Bipolar Transistors Feature Summary

• Designed for general-purpose amplification and switching applications requiring collector currents up to 100 mA.
• Utilizes Process 66 technology, offering electrical characteristics comparable to the 2N3906 NPN counterpart.
• Capable of operating in high-temperature environments with a maximum junction temperature rating of 150 °C.

Single Bipolar Transistors Applications

• General-purpose signal amplification circuits
• Electronic switching applications
• Complementary pairs with NPN transistors

Single Bipolar Transistors Procurement Notes

Verify the specific manufacturer status, as Fairchild Semiconductor was acquired by onsemi. Confirm that the component meets all required RoHS compliance standards for your region. Ensure the package type matches your PCB footprint requirements. Check for any obsolescence notices or lifecycle changes before finalizing procurement plans.

Single Bipolar Transistors Selection Notes

Select this component when a PNP transistor with a 30 V breakdown voltage and 200 mA continuous current capability is required. Consider its thermal resistance values if heat dissipation is a critical design factor. Evaluate the hFE variations across different collector currents to ensure adequate gain for your specific application needs.

Single Bipolar Transistors Part Context

The PN4917 belongs to the family of small-signal bipolar transistors designed for discrete power and signal technologies. Manufactured originally by Fairchild Semiconductor and now under onsemi, it serves as a standard replacement for legacy designs. Its TO-92 packaging makes it suitable for through-hole mounting in various consumer and industrial electronics.

Single Bipolar Transistors Replacement Considerations

The datasheet explicitly references the 2N3906 for characteristic comparison, indicating potential functional similarity in complementary configurations. Verify pinout compatibility and exact electrical tolerances when substituting with other PNP transistors from different manufacturers.

Single Bipolar Transistors FAQ

What is the maximum collector current for the PN4917?

The absolute maximum rating for continuous collector current (IC) is 200 mA.

How does the PN4917 compare to the 2N3906?

The PN4917 is sourced from Process 66 and is designed to have characteristics similar to the 2N3906, serving as its PNP counterpart.

What is the operating temperature range?

The operating and storage junction temperature range is from -55 °C to +150 °C.