IRFP460 N-Channel MOSFET 500V 18.4A Equivalent & Substitute Parts

Part Overview

The IRFP460 is an N-Channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET) rated for 500V drain-to-source voltage with 18.4A continuous drain current at 25°C. Manufactured by STMicroelectronics as part of the PowerMESH™ II series, this device is housed in a TO-247-3 through-hole package and dissipates up to 220W at the case temperature. The IRFP460 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and new production applications requiring compatible performance characteristics.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	500	V
Continuous Drain Current (Id) @ 25°C	18.4	A (Tc)
On-State Resistance (Rds On Max) @ Id, Vgs	270 mOhm @ 9A, 10V	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ Id	4	V @ 250µA
Gate Charge (Qg Max) @ Vgs	128	nC @ 10V
Maximum Gate Voltage (Vgs Max)	±30	V
Input Capacitance (Ciss Max) @ Vds	2980	pF @ 25V
Power Dissipation (Max)	220	W (Tc)
Operating Junction Temperature	150	°C (TJ)
Package Type	TO-247-3	Through Hole
FET Type	N-Channel
Technology	MOSFET (Metal Oxide)

Substitute Part Grouping Explanation

Substitution of the IRFP460 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 500V
Package Type: Must be TO-247-3 or compatible TO-247 variant
FET Type: Must be N-Channel
Technology: Must be MOSFET (Metal Oxide)
Mounting Type: Must be Through Hole

Secondary Compatibility Parameters:

Continuous Drain Current (Id) @ 25°C: Substitute must meet or exceed 18.4A
On-State Resistance (Rds On): Lower or equal values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Power Dissipation: Higher ratings provide thermal margin
Operating Temperature Range: Must support minimum 150°C junction temperature

Substitute parts are grouped based on whether they maintain electrical equivalence within the specified voltage and current ratings while accommodating the through-hole TO-247 package family. Parts with higher current ratings, lower on-state resistance, or improved thermal characteristics are considered direct upgrades. Parts with identical or near-identical specifications are considered direct replacements.

Parameter Comparison

Parameter	IRFP460	IRFP460PBF	IRFP460APBF	IRFP460LC	IRFP460LCPBF	SIHG20N50C-E3	APT24F50B
Manufacturer	STMicroelectronics	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix	Microchip Technology
Vdss (V)	500	500	500	500	500	500	500
Id @ 25°C (A)	18.4	20	20	20	20	20	24
Rds On Max (mOhm)	270 @ 9A, 10V	270 @ 12A, 10V	270 @ 12A, 10V	270 @ 12A, 10V	270 @ 12A, 10V	270 @ 10A, 10V	240 @ 11A, 10V
Vgs(th) Max (V)	4 @ 250µA	4 @ 250µA	4 @ 250µA	4 @ 250µA	4 @ 250µA	5 @ 250µA	5 @ 1mA
Qg Max (nC)	128 @ 10V	210 @ 10V	105 @ 10V	120 @ 10V	120 @ 10V	76 @ 10V	90 @ 10V
Vgs Max (V)	±30	±20	±30	±30	±30	±30	±30
Ciss Max (pF)	2980 @ 25V	4200 @ 25V	3100 @ 25V	3600 @ 25V	3600 @ 25V	2942 @ 25V	3630 @ 25V
Power Dissipation Max (W)	220	280	280	280	280	250	335
Operating Temp (°C)	150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

IRFP460PBF, IRFP460APBF, IRFP460LC, and IRFP460LCPBF are direct replacements for the obsolete IRFP460. These parts share the same base product number (IRFP460), identical voltage and current ratings, and compatible TO-247-3 packaging. IRFP460PBF and IRFP460LCPBF carry ROHS3 compliance, making them suitable for applications requiring environmental compliance. IRFP460APBF and IRFP460LCPBF offer extended operating temperature ranges (-55°C to 150°C) compared to the original part specification.

Upgraded Substitutes (Enhanced Performance):

SIHG20N50C-E3 provides equivalent voltage and current ratings with reduced gate charge (76 nC versus 128 nC), resulting in lower switching losses and improved efficiency. This part maintains the same on-state resistance specification and offers ROHS3 compliance with active product status.

APT24F50B from Microchip Technology represents a performance upgrade with 24A continuous drain current (versus 18.4A), 335W power dissipation (versus 220W), and reduced on-state resistance (240 mOhm versus 270 mOhm). This part is suitable for applications requiring higher current capacity or improved thermal performance while maintaining 500V voltage rating and TO-247 packaging.

Compliance Considerations:

For applications requiring RoHS3 compliance, select IRFP460PBF, IRFP460APBF, IRFP460LCPBF, SIHG20N50C-E3, or APT24F50B. The original IRFP460 and IRFP460LC are RoHS non-compliant.

For applications requiring REACH compliance status, IRFP460LCPBF is marked as REACH Affected. All other substitute parts are REACH Unaffected.

Inventory and Availability:

IRFP460PBF offers the highest inventory availability (31,634 units), followed by SIHG20N50C-E3 (23,400 units). IRFP460LC and IRFP460LCPBF provide mid-range availability (2,250 and 1,705 units respectively). APT24F50B has lower availability (983 units).

Frequently Asked Questions (FAQ)

Q: Can IRFP460PBF be used as a direct replacement for the obsolete IRFP460?

A: Yes. IRFP460PBF shares the same base product number, voltage rating (500V), current rating (20A, exceeding the original 18.4A), on-state resistance (270 mOhm), and TO-247-3 package. The primary difference is active product status and ROHS3 compliance. Electrical performance is equivalent for standard applications.

Q: What is the difference between IRFP460LC and IRFP460LCPBF?

A: Both parts have identical electrical specifications (500V, 20A, 270 mOhm Rds On, TO-247-3 package). The primary difference is RoHS compliance: IRFP460LCPBF is ROHS3 compliant while IRFP460LC is non-compliant. IRFP460LCPBF also has REACH Affected status. For new designs, IRFP460LCPBF is preferred.

Q: Should I use APT24F50B instead of IRFP460PBF?

A: APT24F50B is a performance upgrade with higher current rating (24A versus 20A), higher power dissipation (335W versus 280W), and lower on-state resistance (240 mOhm versus 270 mOhm). Use APT24F50B when applications require higher current capacity or improved thermal performance. For direct replacement of the original IRFP460, IRFP460PBF is the standard choice.

Q: What advantage does SIHG20N50C-E3 offer?

A: SIHG20N50C-E3 provides reduced gate charge (76 nC versus 128 nC in the original IRFP460), resulting in lower switching losses and improved efficiency in high-frequency switching applications. Voltage, current, and on-state resistance specifications remain equivalent. This part is suitable for applications prioritizing switching performance.

Q: Are all substitute parts available in the same TO-247-3 package?

A: Yes. All substitute parts listed use TO-247-3 or compatible TO-247 packaging variants (TO-247AC, TO-247 [B]). These packages are mechanically and electrically interchangeable for through-hole mounting applications.

Q: Which substitute part has the best RoHS and environmental compliance?

A: IRFP460PBF, IRFP460APBF, IRFP460LCPBF, SIHG20N50C-E3, and APT24F50B are all ROHS3 compliant. IRFP460LCPBF is additionally marked as REACH Affected. For applications requiring strict environmental compliance, any of the ROHS3-compliant parts are suitable.

Q: Can I use IRFP460APBF in place of IRFP460PBF?

A: Yes. Both parts have identical electrical specifications (500V, 20A, 270 mOhm Rds On, TO-247-3 package) and ROHS3 compliance. IRFP460APBF offers extended operating temperature range (-55°C to 150°C) compared to the original specification. Selection between these parts depends on inventory availability and specific temperature requirements.

Q: What is the maximum gate voltage for each substitute part?

A: Most substitute parts support ±30V maximum gate voltage (IRFP460APBF, IRFP460LC, IRFP460LCPBF, SIHG20N50C-E3, APT24F50B). IRFP460PBF has a reduced maximum gate voltage of ±20V. Verify gate drive circuit compatibility when selecting parts with different Vgs Max ratings.

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