Andrew
Andrew Content Marketer
On Nov 19, 2025


KSP44BU Bipolar Transistors – BJT by ON Semiconductor – High-Voltage Performance for Modern Electronics

The Bipolar Transistors – BJT KSP44BU by ON Semiconductor are designed for high-voltage, general-purpose amplification and switching applications. Engineered for robust performance, these NPN transistors are commonly used in industrial controls, power supplies, consumer electronics, and signal processing circuits.

In this article, we explore the specifications, features, applications, wiring details, and why this component is a strong choice among bold Semiconductors, bold Discrete Semiconductors, bold Transistors, and bold Bipolar Transistors – BJT by ON Semiconductor.


Technical Specifications of KSP44BU

  • Manufacturer: ON Semiconductor

  • Part Number: KSP44BU

  • Type: Bipolar Transistors – BJT by ON Semiconductor

  • Polarity: NPN

  • Voltage Rating (VCEO): 400V (high-voltage capability)

  • Current Rating: Low to medium switching currents

  • Package: TO-92 through-hole package

  • Gain (hFE): Medium gain, suitable for switching and linear circuits

  • Category: Semiconductors, Discrete Semiconductors, Transistors

This transistor is ideal for both low-frequency signal amplification and high-voltage switching operations.


Key Features of KSP44BU

  • High Voltage Handling – Supports up to 400V for demanding power circuits

  • Reliable Switching – Performs well in industrial and consumer designs

  • Low Noise Operation – Suitable for audio and signal applications

  • Compact TO-92 Package – Easy mounting for PCB and through-hole designs

  • Versatile Usage – Works in power supplies, drivers, and general analog circuits

These features make it a reliable choice for engineers working with bold Discrete Semiconductors and robust bold Bipolar Transistors – BJT by ON Semiconductor.


Applications of KSP44BU

The KSP44BU transistor is widely used in:

  • High-voltage switching circuits

  • Power supplies and inverter circuits

  • General signal amplification

  • Audio and low-noise amplifiers

  • Industrial automation boards

  • Relay drivers and control modules

  • Consumer electronics power stages

Its performance places it among the most versatile bold Transistors in modern electronic design.


Wiring and Circuit Integration Overview

  1. Identify the transistor pinout (Emitter, Base, Collector).

  2. Connect Emitter to ground or reference point.

  3. Feed Base with controlled input via biasing resistors.

  4. Connect Collector to load or high-voltage supply (as required by design).

  5. Ensure proper heat management and voltage limits.

This transistor integrates easily into high-voltage and general-purpose circuit stages.


Use Case Scenario: High-Voltage Driver Circuit

Scenario: An automation designer required a transistor capable of switching high voltage for a control system.
Problem: Standard transistors failed under voltage spikes and heat stress.
Solution: The KSP44BU Bipolar Transistors – BJT by ON Semiconductor offered stable switching and excellent voltage tolerance.
Result: Improved reliability, reduced failures, and long-term operational stability.

This underlines why ON Semiconductor components lead the industry in bold Semiconductors and high-performance bold Transistors.


Download Datasheet for KSP44BU

Need detailed ratings, curves, or thermal specifications?

Download the official datasheet from Xon Electronics 


Why Buy from Xon Electronics?

Xon Electronics supplies premium bold Semiconductors, including durable bold Bipolar Transistors – BJT by ON Semiconductor, offering:

  • 100% Genuine ON Semiconductor Products

  • Worldwide Shipping (USA, India, Europe, Australia & more)

  • OEM & Bulk Pricing Options

  • Technical Support for Design Integration

  • Secure and Fast Ordering

Order today from www.xonelec.com for high-performance transistor solutions.


Conclusion

The KSP44BU Bipolar Transistors – BJT by ON Semiconductor provide robust, high-voltage switching and amplification for both industrial and consumer applications. As a trusted component within bold Discrete Semiconductors and advanced bold Transistors, it remains a top performer in power and signal circuitry.


FAQs – KSP44BU BJT

Q1. What type of transistor is KSP44BU?
A high-voltage NPN bipolar transistor.

Q2. What category does it belong to?
It falls under Semiconductors, Discrete Semiconductors, and Transistors.

Q3. Where is it used?
In power supplies, automation, audio circuits, and switching applications.

Q4. What voltage can it handle?
Up to 400V VCEO.

Q5. Where can I buy it?
You can purchase it globally at www.xonelec.com.




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