Infineon HEXFET Type N-Channel MOSFET, 18 A, 200 V Enhancement, 3-Pin TO-220 IRFB4020PBF

This image is representative of the product range

Bulk discount available
View bulk pricing options

Subtotal (1 pack of 5 units)*

PHP620.01

(exc. VAT)

PHP694.41

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • Plus 130 unit(s) shipping from August 10, 2026
  • Plus 445 unit(s) shipping from August 17, 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units
Per Unit
Per Pack*
5 - 20PHP124.002PHP620.01
25 - 95PHP121.522PHP607.61
100 - 245PHP119.09PHP595.45
250 - 1245PHP116.712PHP583.56
1250 +PHP96.058PHP480.29

*price indicative

Packaging Options:
RS Stock No.:
688-6939
Distrelec Article No.:
304-43-452
Mfr. Part No.:
IRFB4020PBF
Manufacturer:
Infineon
Find similar products by selecting one or more attributes.
Select all

Brand

Infineon

Channel Type

Type N

Product Type

MOSFET

Maximum Continuous Drain Current Id

18A

Maximum Drain Source Voltage Vds

200V

Series

HEXFET

Package Type

TO-220

Mount Type

Through Hole

Pin Count

3

Maximum Drain Source Resistance Rds

100mΩ

Channel Mode

Enhancement

Typical Gate Charge Qg @ Vgs

18nC

Minimum Operating Temperature

-55°C

Forward Voltage Vf

1.3V

Maximum Power Dissipation Pd

100W

Maximum Operating Temperature

175°C

Height

9.02mm

Length

10.66mm

Standards/Approvals

No

Automotive Standard

No

Infineon HEXFET Series MOSFET, 200V Maximum Drain Source Voltage, 18A Maximum Continuous Drain Current - IRFB4020PBF


This MOSFET is a power-switching transistor designed for high-voltage, high-current applications where robust thermal endurance is required. It operates as an N-channel enhancement device in a through-hole TO-220 package, providing a practical solution for discrete power stages and board-mounted switching circuits across a wide temperature range.

Features and Benefits:


• 200V drain rating enables high-voltage switching applications
• 18A continuous drain current supports substantial load currents
• 100W power dissipation permits elevated power handling
• 100 mΩ Rds(on) minimises conduction losses under load
• 18 nC typical gate charge yields faster switching transitions
• 1.3V forward voltage lowers diode conduction drop during recovery

Applications


• Suitable for motor-drive half-bridge stages
• Ideal for offline switch-mode power supplies
• Used with power converters requiring through-hole mounting
• Can be used for high-voltage relay and solenoid drivers
• Appropriate for laboratory prototypes and bench power experiments

What gate-voltage limits should designers observe for safe operation?


The gate-source voltage must not exceed ±20V to avoid damaging the gate oxide and to maintain reliable switching behaviour.

How does the device perform across temperature extremes?


It is rated to operate from -55 °C up to 175 °C, allowing use in environments with wide thermal variation while maintaining specified electrical characteristics.

What package considerations affect PCB layout and cooling?


The TO-220 through-hole form factor provides a single insulated mounting tab and allows direct attachment to a heatsink or chassis for improved thermal management.

How does the body diode influence switching-topology choice?


The intrinsic diode with a 1.3V forward drop should be accounted for in designs with reverse-recovery events to manage dissipation and determine snubber requirements.

Related links

Be the first to know about our latest products and offers

Email address

The personal information you provide to us when signing up to this mailing list will be processed in line with the Privacy Policy