D44H11 Transistor TO-220 Code: 98031572

The D44H11 is a popular, medium-power NPN bipolar transistor packaged in a TO-220 case. It is highly prized for its low saturation voltage, fast switching capabilities, and robust 10A current capacity, making it ideal for general-purpose power amplification, switching regulators, and motor drives.

Key Specifications

• Collector-Emitter Voltage :80V max
• Collector Current :10A continuous (20A pulsed)
• Power Dissipation :50W
• DC Current Gain: 40 to 250
• Transition Frequency :50 MHz

Pinout Configuration (TO-220)

1. Base (Pin 1):Controls the switching/amplification
2. Collector (Pin 2 & 4):Main current input
3. Emitter (Pin 3):Current output/return

Common Applications

• Output and driver stages of audio power amplifiers
• DC-to-DC converters and inverters
• Switching and linear series/shunt regulators

Equivalents and Complements

• Complementary PNP Pair:D45H11 (used in push-pull configurations)
• Similar Substitutes:TIP41C, BD243C (check specific parameter differences in datasheets depending on your circuit needs)