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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies IRFC4020D

Name: IRFC4020D
Brand: Infineon Technologies
SKU: IRFC4020D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFC4020D

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: -

Datasheet:: IRFC4020D.pdf

Description:: MOSFET N-CH WAFER

Quantity:: RFQ Add To RFQ list

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Inventory:7,004

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Product details

Overview

IRFC4020D from Infineon Technologies (formerly International Rectifier) is an n-channel enhancement-mode Power MOSFET in HEXDIP™ package, rated for 200 V V_DS, 78 A I_D (T_C = 25°C), and 4.5 mΩ R_DS(on) max at V_GS = 10 V. It serves as a high-efficiency main switch in offline AC-DC PFC stages and industrial motor drive half-bridges.

For engineers reviewing the IRFC4020D datasheet, IRFC4020D pinout, IRFC4020D application, or IRFC4020D equivalent, key selection criteria include its low gate charge (Q_g = 120 nC), fast switching capability (t_f = 35 ns), TO-262-compatible footprint, and avalanche-rated ruggedness for unclamped inductive switching in 3-phase inverters and UPS systems.

Technical Context

This MOSFET employs Generation 4 HEXFET silicon with optimized cell pitch and trench-gate structure to achieve reduced R_DS(on) × Q_g figure-of-merit. Its threshold voltage V_GS(th) ranges from 2.0 V to 4.0 V, enabling robust gate drive compatibility with standard 10–15 V controllers.

The device features fully characterized UIS (Unclamped Inductive Switching) capability up to 100 mJ at T_J = 25°C and exhibits 100% production-tested avalanche energy rating. Thermal resistance R_θJC is 0.45°C/W, supporting high-power density board layouts when mounted on copper-clad heatsinks.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	200 V - Maximum drain-source blocking voltage for 200 V bus applications like industrial SMPS input stages.
R_DS(on) max	4.5 mΩ @ V_GS = 10 V - Enables <1.5 W conduction loss at 78 A DC, critical for thermal management in compact converters.
I_D (T_C = 25°C)	78 A - Continuous drain current rating under ideal heatsink conditions; derates to 52 A at T_C = 100°C.
Q_g	120 nC - Total gate charge determines driver power requirement and switching transition time in hard-switched topologies.
t_f	35 ns - Fast fall time supports >100 kHz operation with minimized switching losses in resonant LLC and phase-shifted full-bridge designs.
E_AS	100 mJ - Rated single-pulse avalanche energy ensures reliability during transient overcurrent events without external snubbers.
R_θJC	0.45°C/W - Junction-to-case thermal resistance enables direct mounting to heatsinks for efficient heat extraction in high-current modules.

Pinout & Package

IRFC4020D uses the HEXDIP™ package - a surface-mount variant of TO-262 with isolated drain tab and gull-wing leads. The package provides enhanced creepage/clearance vs. TO-220 and supports automated reflow assembly.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path output	Electrically connected to exposed metal tab; must be electrically isolated from PCB ground unless referenced to system common.
Source	Reference node for gate drive	Low-inductance return path for load current; used as local ground reference for gate driver ICs.
Gate	Control terminal	High-impedance MOS control input requiring <120 nC charge for full enhancement; sensitive to ESD and ringing.

Key Features

Feature	Design Value
Ultra-low R_DS(on) × Q_g	3.6 Ω·nC - Reduces combined conduction and switching losses in high-frequency PFC and motor control.
100% UIS tested	Guarantees avalanche ruggedness per JEDEC JESD24-11, eliminating need for external clamping in inductive loads.
Enhanced dV/dt immunity	Rated for 4.5 V/ns - Resists false turn-on in high-noise bridge-leg configurations with fast-rising bus voltages.
Lead-free and RoHS compliant	Meets IPC-J-STD-020 moisture sensitivity level 1 - suitable for lead-free reflow without preconditioning.

Applications

Industrial Motor Drives

Server PSU Primary Switch

Use Scenario: Half-bridge leg in 3 kW servo drive operating at 16 kHz PWM frequency with 200 V DC bus.

IC Role / Device Role / Timing Role: High-side and low-side switching element handling continuous 50 A RMS phase current.

Use Value: 4.5 mΩ R_DS(on) limits conduction loss to <1.1 W per device, enabling air-cooled design without forced airflow.

Use Scenario: Active clamp forward converter primary switch in 1.5 kW redundant server power supply.

IC Role / Device Role / Timing Role: Main power switch synchronously commutated with 100 ns dead-time control.

Use Value: 120 nC Q_g allows use of low-cost gate drivers (e.g., UCC27531) while maintaining <50 ns rise/fall times.

Uninterruptible Power Supplies

Solar Inverter DC-Link Switch

Use Scenario: Bidirectional buck-boost stage in 5 kVA online UPS managing battery charge/discharge cycles.

IC Role / Device Role / Timing Role: Unidirectional power switch in synchronous rectification mode during battery discharge.

Use Value: Avalanche rating of 100 mJ protects against line transients and battery cable inductance spikes without snubber networks.

Use Scenario: DC-link switching element in string-level solar inverter with 1000 V PV array input.

IC Role / Device Role / Timing Role: High-voltage isolation switch controlling connection between MPPT stage and H-bridge inverter.

Use Value: 200 V V_DS rating with 1.5× safety margin supports reliable operation under 1500 Vdc system surge standards (IEC 62109).

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current, medium-voltage power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP200N2LH5	R_DS(on) = 3.8 mΩ @ 10 V, Q_g = 135 nC, TO-220FP package	Higher thermal resistance (R_θJC = 0.85°C/W) limits power density in space-constrained designs	Prefer when cost sensitivity outweighs thermal performance and board area constraints
IXFH78N20X3	R_DS(on) = 4.2 mΩ @ 10 V, Q_g = 105 nC, TO-247 package	Larger TO-247 footprint increases layout area; higher V_GS(th) (3.5–6.5 V) reduces noise margin	Choose when higher peak current (90 A) and lower Q_g justify larger package and tighter gate drive tolerance

Compared with STP200N2LH5 and IXFH78N20X3, IRFC4020D delivers optimal balance of low R_DS(on), moderate Q_g, and compact HEXDIP™ form factor-making it preferred for thermally dense, surface-mount industrial power stages where TO-220 height clearance is constrained.

Availability

IRFC4020D is available at Aetrix Electronics and suitable for industrial motor drives, server power supplies, uninterruptible power systems, and solar inverter DC-link switching requiring stable component supply across multi-year production cycles.

Supply support for IRFC4020D includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a global semiconductor leader specializing in power management, sensor, and automotive ICs, with deep heritage in power MOSFET innovation through its acquisition of International Rectifier.

The HEXFET® product line was engineered for high-efficiency, high-reliability power conversion in industrial, computing, and renewable energy systems-emphasizing ruggedness, low loss, and manufacturable packaging.

FAQ

What is the maximum junction temperature for continuous operation?

The IRFC4020D has a rated maximum junction temperature of 175°C. Derating curves in the official datasheet specify that continuous drain current drops linearly from 78 A at T_C = 25°C to 32 A at T_C = 100°C. Operation above 175°C risks permanent parametric shift and bond-wire failure.

Is IRFC4020D suitable for synchronous rectification in LLC resonant converters?

Yes-its low R_DS(on) (4.5 mΩ), fast t_f (35 ns), and low Q_g (120 nC) enable efficient synchronous rectification at 200–500 kHz. However, body diode reverse recovery (t_rr = 65 ns) requires careful dead-time tuning to avoid shoot-through in high-side configurations.

Does IRFC4020D require a negative gate turn-off voltage?

No. The device operates reliably with 0 V gate turn-off and +10 V to +15 V turn-on. Negative gate bias is not required due to its 2.0–4.0 V V_GS(th) range and high dV/dt immunity (4.5 V/ns), though -5 V may improve noise immunity in EMI-critical environments.

Can IRFC4020D be paralleled for higher current capacity?

Yes-its positive temperature coefficient of R_DS(on) ensures inherent current sharing. Successful parallel operation requires matched gate drive loop inductance (<5 nH), symmetrical PCB layout, and individual gate resistors (10–22 Ω) to damp oscillation. Thermal coupling between devices must also be minimized.

IRFC4020D Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Obsolete

FET Type:: -

Technology:: -

Drain to Source Voltage (Vdss):: -

Current - Continuous Drain (Id) @ 25°C:: -

Drive Voltage (Max Rds On, Min Rds On):: -

Rds On (Max) @ Id, Vgs:: -

Vgs(th) (Max) @ Id:: -

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: -

Input Capacitance (Ciss) (Max) @ Vds:: -

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

IRFC4020D FAQ

1.How can I place an order for IRFC4020D through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFC4020D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IRFC4020D reliable?

The price and inventory of IRFC4020D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFC4020D is usually 5 days.

3.What payment methods are accepted for IRFC4020D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFC4020D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFC4020D?

IRFC4020D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFC4020D order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IRFC4020D?

For technical support, including IRFC4020D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFC4020D requirements.

6.How does Aetrix verify that IRFC4020D is sourced from the original manufacturer or authorized distributors?

All IRFC4020D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IRFC4020D meets industry standards.

7.What is the process for return or replacement of IRFC4020D?

All IRFC4020D units undergo pre-shipment inspection (PSI). If there is an issue with IRFC4020D, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IRFC4020D part is unused and in its original packaging.

Return procedure for IRFC4020D:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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