IRF540S N-Channel MOSFET 100V 28A Equivalent & Substitute Parts

Part Overview

The IRF540S is an N-Channel MOSFET manufactured by Vishay Siliconix, rated for 100V drain-to-source voltage with 28A continuous drain current in a surface mount D2PAK (TO-263) package. This device is classified as obsolete product status. Due to its obsolete classification, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for new production and redesign efforts.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	28	A (Tc)
On-Resistance (Rds On) @ 17A, 10V	77	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	72	nC
Input Capacitance (Ciss) @ 25V	1700	pF
Power Dissipation (Max)	3.7 (Ta), 150 (Tc)	W
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-263 (D2PAK)	Surface Mount
Gate Voltage (Max)	±20	V

Substitute Part Grouping Explanation

Substitution of the IRF540S is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Drain-to-Source Voltage (Vdss): 100V minimum
Package Type: TO-263 (D2PAK) surface mount configuration
FET Type: N-Channel MOSFET
Operating Temperature Range: -55°C to 175°C (TJ)
Gate Voltage Rating: ±20V or greater

Performance Parameters for Functional Equivalence:

Continuous Drain Current (Id): 28A or greater at 25°C
On-Resistance (Rds On): 77mOhm or lower at specified conditions
Gate Threshold Voltage (Vgs(th)): 4V or lower
Gate Charge (Qg): 72nC or lower at 10V

Substitute parts are grouped into two categories: parametric equivalents (matching all critical parameters) and functional alternatives (meeting voltage and current requirements with acceptable performance trade-offs).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Ciss (pF)	Package	Product Status
IRF540S	Vishay Siliconix	100	28	77 @ 17A, 10V	4 @ 250µA	72 @ 10V	1700 @ 25V	TO-263 (D2PAK)	Obsolete
IRF540SPBF	Vishay Siliconix	100	28	77 @ 17A, 10V	4 @ 250µA	72 @ 10V	1700 @ 25V	TO-263 (D2PAK)	Active
PHB27NQ10T,118	Nexperia USA Inc.	100	28	50 @ 14A, 10V	4 @ 1mA	30 @ 10V	1240 @ 25V	TO-263 (D2PAK)	Active
STB30NF10T4	STMicroelectronics	100	35	45 @ 15A, 10V	4 @ 250µA	55 @ 10V	1180 @ 25V	TO-263 (D2PAK)	Active
BUK9675-100A,118	Nexperia USA Inc.	100	23	72 @ 10A, 10V	2 @ 1mA	Not specified	1704 @ 25V	TO-263 (D2PAK)	Active
IRF530NSTRLPBF	Infineon Technologies	100	17	90 @ 9A, 10V	4 @ 250µA	37 @ 10V	920 @ 25V	TO-263 (D2PAK)	Active
IRF540NSTRLPBF	Infineon Technologies	100	33	44 @ 16A, 10V	4 @ 250µA	71 @ 10V	1960 @ 25V	TO-263 (D2PAK)	Active

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement):

IRF540SPBF is the direct parametric equivalent to IRF540S. This part maintains identical electrical specifications across all measured parameters while offering active product status. The primary distinction is packaging format (Tube versus unspecified for the original). RoHS3 compliance and REACH Affected status provide regulatory advantages for new designs. This part is recommended for applications requiring exact electrical performance matching.

Functional Alternatives (Performance Enhancement):

PHB27NQ10T,118 (Nexperia) and STB30NF10T4 (STMicroelectronics) provide functional substitution with improved electrical performance. Both parts maintain the 100V Vdss rating and meet or exceed the 28A continuous drain current requirement. PHB27NQ10T,118 delivers superior on-resistance (50mOhm versus 77mOhm) and reduced gate charge (30nC versus 72nC), resulting in lower switching losses and improved thermal performance. STB30NF10T4 offers the highest current rating (35A) with the lowest on-resistance (45mOhm) among active alternatives, providing additional design margin.

Current-Limited Alternative:

BUK9675-100A,118 (Nexperia) operates at 23A continuous drain current, below the 28A specification of IRF540S. This part is suitable only for applications where the actual operating current does not exceed 23A. The device includes AEC-Q101 automotive qualification, indicating suitability for automotive-grade applications.

Lower-Current Alternative:

IRF530NSTRLPBF (Infineon) is rated for 17A continuous drain current and is not suitable for applications requiring the full 28A capability of IRF540S. This part may be considered only for current-limited applications or as a conservative design choice.

Compliance Considerations:

All active substitute parts carry RoHS3 compliance certification. IRF540SPBF is REACH Affected, while Nexperia and STMicroelectronics alternatives are REACH Unaffected. All parts maintain MSL Level 1 (Unlimited) moisture sensitivity rating and operate across the -55°C to 175°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can IRF540SPBF be used as a direct replacement for IRF540S?

A: Yes. IRF540SPBF is a parametric equivalent with identical electrical specifications. The primary difference is product status (Active versus Obsolete) and packaging format. All electrical parameters, including Vdss, Id, Rds On, gate charge, and input capacitance, are identical.

Q: What is the advantage of using PHB27NQ10T,118 over IRF540SPBF?

A: PHB27NQ10T,118 provides improved electrical performance with lower on-resistance (50mOhm versus 77mOhm) and significantly reduced gate charge (30nC versus 72nC). These improvements result in lower power dissipation during switching and reduced thermal stress. The part maintains the same 100V/28A rating and D2PAK package.

Q: Is STB30NF10T4 suitable for all IRF540S applications?

A: STB30NF10T4 is suitable for applications where the design can accommodate improved performance characteristics. The part exceeds IRF540S specifications in continuous drain current (35A versus 28A) and on-resistance (45mOhm versus 77mOhm). The D2PAK package and voltage rating are identical. Verify that the application does not have specific design constraints tied to the original part's electrical characteristics.

Q: Why is BUK9675-100A,118 listed as a substitute if it has lower current rating?

A: BUK9675-100A,118 is included as a functional alternative for applications where the actual operating current does not exceed 23A. The part maintains 100V Vdss rating and D2PAK packaging. Applications operating at or below 23A continuous current can use this part. Verify actual circuit current requirements before selection.

Q: Are all substitute parts available in the same D2PAK package?

A: Yes. All substitute parts listed are packaged in TO-263 (D2PAK) surface mount configuration with identical pinout and thermal characteristics. No PCB layout modifications are required for mechanical compatibility.

Q: What is the difference between IRF540NSTRLPBF and IRF540SPBF?

A: Both parts share the IRF540 base product number and maintain 100V/28A electrical specifications. IRF540NSTRLPBF is manufactured by Infineon Technologies and rated for 33A continuous drain current with improved on-resistance (44mOhm). IRF540SPBF is manufactured by Vishay Siliconix with the original 28A rating. IRF540NSTRLPBF provides performance enhancement while maintaining compatibility.

Q: Do all substitute parts meet RoHS compliance requirements?

A: All active substitute parts carry RoHS3 compliance certification. IRF540S is RoHS non-compliant. For applications requiring RoHS compliance, IRF540SPBF, PHB27NQ10T,118, STB30NF10T4, BUK9675-100A,118, IRF530NSTRLPBF, and IRF540NSTRLPBF all meet RoHS3 requirements.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts operate across the -55°C to 175°C junction temperature range, matching the IRF540S specification. No thermal performance limitations exist across the specified operating range.

Q: Can I use IRF530NSTRLPBF in a design originally specified for IRF540S?

A: IRF530NSTRLPBF is rated for 17A continuous drain current, which is below the 28A specification of IRF540S. This part is suitable only for applications where the actual operating current does not exceed 17A. Verify circuit current requirements and thermal dissipation calculations before substitution.

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