Vishay IRF840A N-Channel Power MOSFET, 8 A, 500 V Enhancement, 3-Pin TO-220AB IRF840APBF

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RS庫存編號:
542-9440
Distrelec 貨號:
304-23-891
製造零件編號:
IRF840APBF
製造商:
Vishay
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品牌

Vishay

Channel Type

N

Product Type

Power MOSFET

Maximum Continuous Drain Current Id

8A

Maximum Drain Source Voltage Vds

500V

Package Type

TO-220AB

Series

IRF840A

Mount Type

Through Hole

Pin Count

3

Maximum Drain Source Resistance Rds

850mΩ

Channel Mode

Enhancement

Maximum Gate Source Voltage Vgs

30V

Forward Voltage Vf

2V

Maximum Power Dissipation Pd

125W

Minimum Operating Temperature

-55°C

Typical Gate Charge Qg @ Vgs

38nC

Maximum Operating Temperature

150°C

Height

9.01mm

Width

4.7mm

Standards/Approvals

RoHS

Length

10.41mm

Automotive Standard

No

Vishay IRF840A Series Power MOSFET, 500V Drain Source Voltage, 125W Power Dissipation - IRF840APBF


This power MOSFET is a high-voltage N-channel enhancement device intended for switching and power-control roles in industrial electronics. It operates across a broad ambient range and is supplied in a TO-220AB through-hole package for straightforward mounting in power assemblies. The device is suitable where durable thermal margins and standard gate-drive levels are used.

Features and Benefits:


• 500V drain rating enables high-voltage switching applications
• 8A continuous drain current supports moderate load currents
• 125W power dissipation allows substantial power handling
• 850mΩ Rds(on) reduces conduction losses at low gate drive
• 38nC typical gate charge minimises switching energy
• 30V gate-source limit provides robust gate-voltage tolerance

Applications


• Suitable for industrial high-voltage converters and inverters
• Ideal for switch-mode power supply primary switching
• Used with discrete motor-control stages requiring 8A switching
• Can be used for power-management in lab test equipment
• Suitable for replacement in compatible TO-220AB assemblies

What thermal extremes can it tolerate during operation?


The device is rated to operate from -55°C up to 150°C junction temperature, supporting use in demanding temperature environments.

What mounting and board-assembly approach is recommended?


The TO-220AB package is designed for through-hole mounting and allows direct fastening to heatsinks for improved thermal dissipation.

How does the gate-charge value affect switching design?


A 38nC gate charge determines the drive current and driver selection to achieve desired switching speeds and limits driven switching losses.

What gate-voltage constraints should be observed to avoid damage?


Gate-source voltage must not exceed 30V to prevent gate-oxide stress and ensure long-term reliability.

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