2SD1128 N-Channel Transistor 150V 5A

The 2SD1128 N-Channel Transistor 150V 5A delivers strong and reliable performance in high-power applications that demand excellent voltage endurance, stable current control, and efficient thermal behavior. Engineers use this NPN power transistor in switching power supplies, audio amplifiers, motor drivers, and industrial control circuits because it offers fast switching and dependable electrical characteristics. Moreover, genuine units of the 2SD1128 have become rare in the market, so technicians highly value this component when restoring or upgrading professional equipment.

This transistor arrives in brand-new condition, and it provides consistent behavior even under heavy electrical load. Its TO-220 package improves heat dissipation and reduces thermal buildup during continuous high-current operation. Additionally, the 2SD1128 maintains excellent gain stability and low saturation voltage, which allows designers to achieve higher efficiency and more precise power control.

Key Features

• High-voltage NPN transistor rated at 150V

• Supports 5A continuous collector current

• Strong thermal stability in TO-220 housing

• Fast switching performance for power electronics

• New and rare authentic component with excellent quality

Typical Applications

• SMPS (Switching-Mode Power Supplies)

• Audio amplifier output and driver stages

• Industrial motor control systems

• DC switching and power regulation modules

• Restoration of vintage and industrial electronic devices

Furthermore, the 2SD1128 N-Channel Transistor 150V 5A performs reliably across a wide temperature range, which makes it an ideal choice for circuits that require long-term durability. Consequently, engineers select this transistor for designs that must handle high voltage and high current without sacrificing stability. Therefore, it remains a preferred option for both analog and digital power stages. In addition, the device responds quickly to load changes, allowing designers to optimize overall system efficiency.

Datasheet Specifications

• Type: NPN Power Transistor

• Vceo: 150 V

• Vcbo: 160 V

• Vebo: 5 V

• Ic: 5 A

• Power Dissipation: 60–75 W (with heatsink)

• hFE: 40–200

• Transition Frequency (ft): 3–4 MHz

• Package: TO-220

• Pin Configuration:

  1. Base

  2. Collector

  3. Emitter

Why Engineers Prefer This Component

• Handles high voltage and current with strong durability

• Supports stable and efficient performance in demanding designs

• Offers rare, original quality for professional repairs

• Delivers long-term electrical reliability in industrial systems