Infineon HEXFET N-Channel MOSFET, 85 A, 150 V Enhancement, 3-Pin TO-220 IRFB4321PBF

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RS Stock No.:
495-568
Mfr. Part No.:
IRFB4321PBF
Manufacturer:
Infineon
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Brand

Infineon

Product Type

MOSFET

Channel Type

N

Maximum Continuous Drain Current Id

85A

Maximum Drain Source Voltage Vds

150V

Package Type

TO-220

Series

HEXFET

Mount Type

Through Hole

Pin Count

3

Maximum Drain Source Resistance Rds

15mΩ

Channel Mode

Enhancement

Forward Voltage Vf

-1.2V

Minimum Operating Temperature

-55°C

Maximum Power Dissipation Pd

350W

Maximum Gate Source Voltage Vgs

-30V, +30V

Typical Gate Charge Qg @ Vgs

71nC

Maximum Operating Temperature

175°C

Width

4.82mm

Standards/Approvals

RoHS

Height

9.02mm

Length

10.66mm

Automotive Standard

No

Infineon HEXFET Series MOSFET, 150V Maximum Drain-Source Voltage, 85A Maximum Continuous Drain Current - IRFB4321PBF


This MOSFET is a through‑hole power transistor designed for high‑current switching in demanding environments. It is an N‑channel enhancement device supplied in a TO‑220 package for straightforward PCB mounting. The component supports wide operating temperatures suited to industrial contexts and conforms to RoHS.

Features and Benefits:


• 350W maximum power dissipation enables heavy‑load handling
• 15mΩ Rds(on) minimises conduction losses
• 71 nC typical gate charge supports Rapid switching control
• 30V maximum gate-source voltage allows robust gate drive
• -55°C to 175°C operating range sustains harsh environments

Applications


• Suitable for high‑current power‑supply output stages
• Ideal for motor‑drive switching elements
• Used with heatsinked regulators in industrial systems
• Can be used for DC-DC converter switching
• Suitable for through‑hole replacement in legacy boards

What mounting method does it use?


It is supplied in a TO‑220 package intended for through‑hole mounting and heatsinking.

What kind of channel and switching mode does it use?


The device is an N‑channel, enhancement‑mode transistor designed for fast switching in power circuits.

What are the limits for gate and drain voltages?


The gate may be driven up to 30V and the drain-source voltage can reach 150V.

How much continuous current can it handle and what is the thermal capacity?


It supports 85A continuous drain current with a maximum power dissipation of 350W.

Are there environmental or approval considerations for use?


The component meets RoHS requirements and operates across a temperature span from -55°C to 175°C.

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