MJE13003 Pinout, Equivalent Application Datasheet

The MJE13003 is a high-voltage NPN power transistor widely used in SMPS and inverter circuits. This article explains the MJE13003 pinout, features, specifications, working principle, and applications in a structured 9-heading format.

Introduction

The MJE13003 is an NPN bipolar power transistor designed for high-voltage and medium-current switching applications. It is especially popular in switch-mode power supplies due to its fast switching capability and robust voltage ratings.

MJE13003 Pinout

Understanding the MJE13003 Pinout Configuration

The MJE13003 is available in a TO-126 package with a B-C-E pin configuration:

Correct understanding of the MJE13003 pinout ensures reliable circuit design and prevents device failure.

MJE13003 Key Features

• NPN high-voltage power transistor
• Suitable for high-frequency switching
• Optimized for SMPS applications
• Good thermal stability
• High current handling capability
• Compact TO-126 package for efficient heat dissipation

MJE13003 Characteristics / Specifications

• Collector-Emitter Voltage (VCE): 400V
• Collector-Base Voltage (VCB): 700V
• Emitter-Base Voltage (VEB): 9V
• Collector Current (IC): 1.5A
• Peak Collector Current (ICM): 3A
• Power Dissipation (PD): 40W
• Junction Temperature (Tj): 150 °C
• Storage Temperature (Tstg): −65 °C to +150 °C
• Package Type: TO-126
• Pin Configuration: Base – Collector – Emitter

More Circuit Layouts

Key Applications of MJE13003 NPN Power Transistor

• Switch Mode Power Supplies (SMPS)
• Inverters and UPS circuits
• High-voltage switching stages
• Flyback and forward converters
• Electronic ballast circuits

Equivalent of MJE13003 NPN Power Transistor

Equivalent Transistors:

• MJE13005
• MJE13007

Alternative Transistors:

• 2SC2625
• 2SC3320
• BU508

Working Principle of MJE13003

The MJE13003 operates as a current-controlled NPN transistor. When a small base current is applied, it allows a larger current to flow from collector to emitter. This switching behavior makes it ideal for high-voltage, high-frequency power conversion circuits.

Frequently Asked Questions (FAQ)

Q1: Is MJE13003 suitable for SMPS circuits?
Yes, it is widely used in low to medium power SMPS designs.

Q2: What package does MJE13003 use?
It comes in a TO-126 package.

Q3: Does MJE13003 require a heat sink?
Yes, a heat sink is recommended for high-power or continuous operation.

Q4: What type of transistor is MJE13003?
It is an NPN bipolar junction power transistor.

Conclusion

The MJE13003 transistor is a dependable choice for high-voltage switching applications. With its clear B-C-E pinout, strong voltage handling, and efficient TO-126 package, it remains a popular component in SMPS, inverter, and power conversion circuits.

Datasheet of MJE13003 NPN Power Transistor

Click the following Button to download the datasheet of MJE13003 Transistor :

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