The IRF644 is a high-performance N-Channel power MOSFET designed for high-current and high-voltage switching applications. This article explains the IRF644 pinout, features, specifications, working principle, applications, and alternatives in a consistent format.
Introduction
The IRF644 is an enhancement-mode N-Channel MOSFET widely used in power electronics where efficient switching and high power dissipation are required. Its ability to handle higher drain current compared to similar devices makes it suitable for demanding industrial and commercial power circuits.
Pin Configuration / Pinout of IRF644 MOSFET
Understanding the IRF644 Pinout Configuration
The IRF644 comes in a TO-220 package with a standard G-D-S pin configuration:
| Pin# | Pin Name |
|---|---|
| 1 | Gate |
| 2 | Drain |
| 3 | Source |
Correct wiring of the IRF644 pinout ensures reliable operation and prevents device failure.
Note: DATASHEET DOWNLOAD button is provided end of this article.
IRF644 Key Features
- N-Channel enhancement-mode MOSFET
- Designed for high-voltage and high-current switching
- Low conduction losses in power applications
- Fast switching capability
- High power dissipation support
- Rugged TO-220 package for efficient heat sinking
IRF644 Specifications / Characteristics
- Drain-Source Voltage (VDS): 250V
- Gate-Source Voltage (VGS): ±20V
- Continuous Drain Current (ID): 14A
- Pulsed Drain Current (IDM): 56A
- Power Dissipation (PD): 125W
- Junction Temperature (Tj): 150°C
- Storage Temperature Range (Tstg): −55°C to +150°C
- Package Type: TO-220
- Pin Configuration: Gate – Drain – Source
Key Applications of IRF644 MOSFET
- Switch-mode power supplies (SMPS)
- DC-DC and DC-AC power converters
- Motor drive and control circuits
- High-current electronic switches
- Industrial power control systems
IRF644 Equivalent / Alternatives
(Verify pin compatibility before using substitutions)
Equivalent MOSFETs: IRF630, IRF640
Alternative MOSFETs: FQP13N25, STP15NK50Z, FDP14N25
More Circuit Layouts
Working Principle of IRF644
The IRF644 operates by applying a positive gate-to-source voltage. When this voltage exceeds the threshold, an N-type conduction channel forms, allowing current to flow from drain to source. Removing or reducing the gate voltage turns the MOSFET off, enabling efficient and controlled high-power switching.
Frequently Asked Questions (FAQ)
Q1: What is the maximum drain current of IRF644?
The IRF644 can handle up to 14A of continuous drain current.
Q2: What is the pin configuration of IRF644?
It uses a Gate-Drain-Source (G-D-S) pin configuration.
Q3: Is IRF644 suitable for high-power circuits?
Yes, with proper heat sinking, it supports high-power switching applications.
Q4: What package does IRF644 use?
The IRF644 is available in a TO-220 package.
Conclusion
The IRF644 N-Channel MOSFET is a robust and efficient solution for high-voltage, high-current power switching. Its strong electrical characteristics, fast response, and high power dissipation capability make it a reliable choice for power supplies, motor control, and industrial electronics.
Datasheet of IRF644 MOSFET
Click the following Button below to download the datasheet of IRF644 :
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