The PN4249 is a general-purpose NPN bipolar junction transistor (BJT) manufactured by Fairchild/ON Semiconductor. It is designed for use in switching and amplifier applications. This transistor is known for its reliability and versatility in various electronic circuits.

Applications

• General-purpose amplification
• Switching circuits
• Driver circuits
• Oscillator circuits
• Linear amplifiers

Features

• NPN Polarity
• High Collector-Emitter Breakdown Voltage
• Low Collector-Base Capacitance
• High DC Current Gain (hFE)
• Lead-Free Finish / RoHS Compliant

Benefits

• Versatile transistor suitable for a wide range of applications.
• High breakdown voltage allows for use in higher voltage circuits.
• Good amplification characteristics for linear applications.
• Reliable performance in switching circuits.
• Environmentally friendly due to lead-free and RoHS compliance.

Additional Details

The PN4249 has a collector-emitter breakdown voltage (VCEO) of 40V, a collector current (IC) of 200mA, and a power dissipation of 625mW. The DC current gain (hFE) typically ranges from 40 to 120. The transistor is commonly available in a TO-92 package.