Infineon HEXFET N-Channel MOSFET, 49 A, 55 V, 3-Pin TO-220AB IRFZ44NPBF

Bulk discount available

Subtotal (1 unit)*

£0.87

(exc. VAT)

£1.04

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 943 unit(s) ready to ship
  • Plus 118 unit(s) ready to ship from another location
  • Plus 983 unit(s) shipping from 21 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 - 24£0.87
25 - 49£0.83
50 - 99£0.81
100 - 249£0.76
250 +£0.71

*price indicative

RS Stock No.:
540-9777
Distrelec Article No.:
303-41-384
Mfr. Part No.:
IRFZ44NPBF
Brand:
Infineon
Find similar products by selecting one or more attributes.
Select all

Brand

Infineon

Channel Type

N

Maximum Continuous Drain Current

49 A

Maximum Drain Source Voltage

55 V

Package Type

TO-220AB

Series

HEXFET

Mounting Type

Through Hole

Pin Count

3

Maximum Drain Source Resistance

17.5 mΩ

Channel Mode

Enhancement

Maximum Gate Threshold Voltage

4V

Minimum Gate Threshold Voltage

2V

Maximum Power Dissipation

94 W

Transistor Configuration

Single

Maximum Gate Source Voltage

-20 V, +20 V

Number of Elements per Chip

1

Maximum Operating Temperature

+175 °C

Typical Gate Charge @ Vgs

63 nC @ 10 V

Transistor Material

Si

Width

9.02mm

Length

10.67mm

Minimum Operating Temperature

-55 °C

Height

8.77mm

Forward Diode Voltage

1.3V

N-Channel Power MOSFET 55V, Infineon


Infineon's range of discrete HEXFET® power MOSFETs includes N-channel devices in surface mount and leaded packages and form factors that can address almost any board layout and thermal design challenge. Across the range benchmark on resistance drives down conduction losses, allowing designers to deliver optimum system efficiency.

Infineon HEXFET Series MOSFET, 49A Maximum Continuous Drain Current, 94W Maximum Power Dissipation - IRFZ44NPBF


This MOSFET is designed for performance in automation, electronics, and electrical engineering applications. It can manage high current levels with low resistance, enhancing the efficiency of electronic circuits. With HEXFET technology, the device offers improved reliability and effectiveness in various environments.

Features & Benefits


• Utilises enhancement mode for responsive control
• Low resistance of 17.5mΩ for effective power management
• Fast switching speeds for improved system performance

Applications


• Suitable for DC-DC converters
• Motor drives and control systems
• Renewable energy systems, such as solar inverters

What impact does the low resistance have on performance?


The low on-resistance of 17.5mΩ enhances efficiency by minimising energy losses during operation, which is advantageous in high-current circuits.

How does temperature affect the continuous drain current?


Continuous drain current is rated at 49A at 25°C and decreases to 35A at 100°C, ensuring safe usage in varying environments.

Can this component handle repetitive avalanche conditions?


Yes, it is designed to withstand repetitive avalanche conditions with an avalanche current rating of up to 25A and an avalanche energy of 9.4mJ, providing additional durability.

What type of applications benefit most from using this MOSFET?


This component is particularly useful in high-power applications, including industrial automation controls and automotive systems requiring efficient energy conversion.


MOSFET Transistors, Infineon


Infineon offers a large and comprehensive portfolio of MOSFET devices which includes the CoolMOS, OptiMOS and StrongIRFET families. They deliver best-in-class performance to bring more efficiency, power density and cost effectiveness. Designs requiring high quality and enhanced protection features benefit from AEC-Q101 industry standards Automotive qualified MOSFETs.