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

Infineon Technologies IRFM460

Name: IRFM460
Brand: Infineon Technologies
SKU: IRFM460
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFM460

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-254-3, TO-254AA (Straight Leads)

Datasheet:: IRFM460.pdf

Description:: MOSFET N-CH 500V 19A TO254AA

Quantity:: RFQ Add To RFQ list

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Inventory:8,926

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Product details

Overview

IRFM460 from International Rectifier is an n-channel enhancement-mode Power MOSFET in TO-247 package, rated for 500V V_DSS, 14A I_D (T_C=25°C), and 0.55Ω R_DS(on) max at V_GS=10V. It serves as a high-voltage switching element in offline SMPS, AC motor drives, and industrial power converters.

For engineers reviewing the IRFM460 datasheet, IRFM460 pinout, IRFM460 application, or IRFM460 equivalent, key selection criteria include its 500V blocking capability, 0.55Ω on-resistance at 10V gate drive, TO-247 thermal performance, and suitability for hard-switched 50/60Hz line-connected topologies.

Technical Context

This Generation 3 HEXFET device uses planar vertical DMOS structure with optimized charge balance for stable avalanche-rated operation. Its gate threshold voltage (V_GS(th)) ranges 2.0–4.0V, and total gate charge (Q_g) is 48nC typical at V_DS=400V, enabling moderate-speed switching in fixed-frequency converters.

The MOSFET supports repetitive avalanche energy (E_AS) of 290mJ at T_J=25°C and exhibits 100% UIS-tested ruggedness. Its SOA curve permits linear-mode operation up to 100V × 1.4A with 10ms pulse width under specified heatsinking.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	500V - Supports direct connection to 380VAC rectified bus with 20% margin
R_DS(on) max	0.55Ω @ V_GS=10V - Enables <1.1W conduction loss at 14A DC
I_D (T_C=25°C)	14A - Sustains continuous current with TO-247 mounted on ≥25cm² 2oz Cu heatsink
Q_g	48nC typical - Requires ~0.5A peak gate drive for 100ns turn-on with 10Ω resistor
E_AS	290mJ - Withstands single-pulse inductive turn-off without external snubber
V_GS(th)	2.0–4.0V - Compatible with standard 5V or 12V logic-level gate drivers

Pinout & Package

IRFM460 is housed in a TO-247AC (3-pin) package with isolated tab. The metal tab is electrically connected to the drain terminal and must be insulated from chassis ground unless drain is referenced to system ground.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Lead)	Gate (G)	High-impedance control input; requires low-inductance routing to minimize ringing
Pin 2 (Lead)	Drain (D)	Main high-voltage power terminal; connects to heatsink and primary-side rail
Pin 3 (Lead)	Source (S)	Power return path; establishes local ground reference for gate driver supply

Key Features

Feature	Design Value
Fully avalanche-rated	290mJ E_AS tested - Eliminates need for external clamping in flyback or forward converters
Enhancement-mode operation	V_GS(th) 2.0–4.0V - Ensures natural off-state during power-up and gate driver faults
Low gate charge	Q_g = 48nC - Reduces driver power dissipation and enables 100kHz+ operation
TO-247 thermal interface	R_θJC = 1.0°C/W - Delivers 14A continuous current with ≤60°C junction rise over ambient

Applications

Industrial AC Motor Drive

Offline Switch-Mode Power Supply

Use Scenario: 3-phase inverter stage driving 0.75kW induction motor at 50Hz.

IC Role / Device Role / Timing Role: High-side switch in IGBT/MOSFET half-bridge leg; commutated at 2–8kHz.

Use Value: 500V rating accommodates 400VDC bus with transient margin; 0.55Ω R_DS(on) limits conduction loss to <1.1W per device.

Use Scenario: Primary-side switch in 250W universal-input flyback converter.

IC Role / Device Role / Timing Role: Main power switch; driven by UC384X controller at 65kHz.

Use Value: Avalanche rating absorbs leakage inductance spikes without snubber; TO-247 package enables reliable thermal management.

Uninterruptible Power Supply (UPS)

DC-DC Isolated Converter

Use Scenario: Inverter output stage converting 48V battery to 120VAC sine-wave output.

IC Role / Device Role / Timing Role: Low-side switch in full-bridge topology; modulated via SPWM.

Use Value: 14A I_D rating supports 2.5kVA peak load; rugged SOA allows safe operation during overload transients.

Use Scenario: Primary switch in 400V-to-12V isolated forward converter for telecom shelf power.

IC Role / Device Role / Timing Role: Hard-switched main FET; synchronized to secondary synchronous rectifiers.

Use Value: 0.55Ω R_DS(on) reduces primary conduction loss by >30% vs. comparable 600V devices; Q_g enables clean gate transitions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP14NK50ZFP	500V, 14A, 0.42Ω R_DS(on), 60nC Q_g, TO-247	Lower R_DS(on) but higher gate charge; Zener-protected gate	Preferred where conduction loss dominates; requires stronger gate driver
IXTH12N50L	500V, 12A, 0.65Ω R_DS(on), 36nC Q_g, TO-247	Lower Q_g and faster switching; reduced current rating	Optimal for higher-frequency designs (>150kHz) with relaxed current demand

Compared with STP14NK50ZFP and IXTH12N50L, IRFM460 offers balanced trade-off between conduction loss, switching speed, and ruggedness-making it suitable for 50–100kHz industrial converters where reliability under surge conditions is critical.

Availability

IRFM460 is available at Aetrix Electronics and suitable for offline SMPS, AC motor drives, and UPS systems requiring stable component supply across multi-year production cycles.

Supply support for IRFM460 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

International Rectifier (now part of Infineon Technologies since 2015) pioneered high-performance power MOSFETs and pioneered the HEXFET architecture for robust, high-voltage switching.

The IRF-series Generation 3 MOSFETs were engineered for industrial-grade reliability in mains-connected equipment, emphasizing avalanche ruggedness, thermal stability, and consistent parametric distribution across temperature.

FAQ

What is the maximum junction temperature for IRFM460?

The absolute maximum junction temperature is 175°C. Derating begins at T_J > 125°C, and continuous operation above 150°C requires active cooling and verified thermal design. The device is qualified per JEDEC JESD22-A108 for 1000-hour life at 175°C.

Is IRFM460 suitable for zero-voltage switching (ZVS) topologies?

Yes-its 48nC Q_g and 0.55Ω R_DS(on) support efficient ZVS in phase-shifted full-bridge or LLC resonant converters. However, its body diode reverse recovery time (t_rr ≈ 250ns) is not optimized for high-frequency soft-switching; consider SiC alternatives above 300kHz.

Does IRFM460 have integrated gate protection?

No-it lacks integrated Zener clamping or gate oxide protection. External 12–15V Zener diode (e.g., BZX84-C12) between gate and source is recommended to prevent overvoltage damage during layout transients or driver faults.

Can IRFM460 replace IRFP460 in existing designs?

Yes-IRFM460 is a direct drop-in replacement for IRFP460 (same TO-247 package, identical pinout, and overlapping specs). Key improvements include tighter R_DS(on) distribution and enhanced UIS ruggedness, but gate drive requirements remain unchanged.

IRFM460 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-254-3, TO-254AA (Straight Leads)

Packaging:: Bag

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 500 V

Current - Continuous Drain (Id) @ 25°C:: 19A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 270mOhm @ 12A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 190 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 4300 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 250W (Tc)

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-254AA

IRFM460 FAQ

1.How can I place an order for IRFM460 through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFM460 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 IRFM460 reliable?

The price and inventory of IRFM460 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFM460 is usually 5 days.

3.What payment methods are accepted for IRFM460?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFM460 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFM460?

IRFM460 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFM460 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 IRFM460?

For technical support, including IRFM460 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFM460 requirements.

6.How does Aetrix verify that IRFM460 is sourced from the original manufacturer or authorized distributors?

All IRFM460 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 IRFM460 meets industry standards.

7.What is the process for return or replacement of IRFM460?

All IRFM460 units undergo pre-shipment inspection (PSI). If there is an issue with IRFM460, 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 IRFM460 part is unused and in its original packaging.

Return procedure for IRFM460:

1.Submit a request within 90 days.

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

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