IRFR540ZPBF N-Channel 100V 35A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFR540ZPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage and 35A continuous drain current in the DPAK (TO-252-3) surface mount package. This device is part of the HEXFET® series and is currently discontinued at DiGi Electronics. Due to its discontinuation status, equivalent and substitute parts from active product lines are necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	35	A (Tc)
On-State Resistance (Rds On) @ 21A, 10V	28.5	mOhm
Gate-Source Threshold Voltage (Vgs(th)) @ 50µA	4	V
Gate Charge (Qg) @ 10V	59	nC
Power Dissipation (Max)	91	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252-3 DPAK	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the IRFR540ZPBF is determined by the following critical parameters:

Primary Matching Criteria:

Drain-to-Source Voltage (Vdss): 100V minimum
Package Type: TO-252-3 DPAK (2 Leads + Tab) surface mount
Continuous Drain Current (Id): 30A or greater at 25°C
Operating Temperature Range: -55°C to 175°C minimum
RoHS3 Compliance and MSL Level 1 rating

Secondary Compatibility Factors:

On-State Resistance (Rds On): Lower or equivalent values ensure thermal performance
Gate Charge (Qg): Lower values reduce switching losses
Input Capacitance (Ciss): Affects gate drive requirements

The substitute parts listed below meet or exceed the primary matching criteria and are sourced from active product lines with confirmed inventory availability.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On @ 10V (mOhm)	Vgs(th) (V)	Qg @ 10V (nC)	Power Dissipation (W)	Package	Status
IRFR540ZPBF	Infineon	100	35 (Tc)	28.5 @ 21A	4 @ 50µA	59 @ 10V	91 (Tc)	TO-252-3 DPAK	Discontinued
IPD35N10S3L26ATMA1	Infineon	100	35 (Tc)	24 @ 35A	2.4 @ 39µA	39 @ 10V	71 (Tc)	TO-252-3 DPAK	Active
IPD30N10S3L34ATMA1	Infineon	100	30 (Tc)	31 @ 30A	2.4 @ 29µA	31 @ 10V	57 (Tc)	TO-252-3 DPAK	Active
FDD3670	onsemi	100	34 (Ta)	32 @ 7.3A	4 @ 250µA	80 @ 10V	83 (Tc)	TO-252-3 DPAK	Active
FDD86102	onsemi	100	36 (Tc)	24 @ 8A	4 @ 250µA	19 @ 10V	62 (Tc)	TO-252-3 DPAK	Active
STD25NF10LT4	STMicroelectronics	100	25 (Tc)	35 @ 12.5A	2.5 @ 250µA	52 @ 5V	100 (Tc)	TO-252-3 DPAK	Active
STD25NF10T4	STMicroelectronics	100	25 (Tc)	38 @ 12.5A	4 @ 250µA	55 @ 10V	100 (Tc)	TO-252-3 DPAK	Active
STD25N10F7	STMicroelectronics	100	25 (Tc)	35 @ 12.5A	4.5 @ 250µA	40 (Tc)	TO-252-3 DPAK	Active
STD26NF10	STMicroelectronics	100	25 (Tc)	38 @ 12.5A	4 @ 250µA	100 (Tc)	TO-252-3 DPAK	Active

Engineering Selection Recommendations

Primary Substitute (Direct Replacement):

IPD35N10S3L26ATMA1 from Infineon Technologies is the primary substitute for IRFR540ZPBF. This part maintains identical voltage and current ratings (100V, 35A) within the same manufacturer's active OptiMOS™ product line. It features improved on-state resistance (24 mOhm vs. 28.5 mOhm) and lower gate charge (39 nC vs. 59 nC), resulting in reduced power dissipation and improved switching performance. Both parts are RoHS3 compliant, MSL Level 1, and operate across the full -55°C to 175°C temperature range. Inventory availability is confirmed at 8,550 pieces.

Secondary Substitute (Current-Rated Alternative):

FDD3670 from onsemi is an active substitute with equivalent 100V voltage rating and 34A continuous drain current, closely matching the original 35A specification. This PowerTrench® series device is available in high volume (15,465 pieces) and maintains full compliance with RoHS3 and MSL Level 1 requirements. Operating temperature range is -55°C to 175°C.

Lower-Current Alternatives:

For applications where 25A continuous drain current is acceptable, STD25NF10LT4 and STD25NF10T4 from STMicroelectronics provide active alternatives with 100V voltage rating and TO-252-3 DPAK packaging. These STripFET™ II series devices offer higher power dissipation ratings (100W vs. 91W) and are available in high volume. STD25NF10LT4 features lower threshold voltage (2.5V) and is available with 688,200 pieces in stock.

Compliance Status:

All listed substitute parts are RoHS3 compliant, MSL Level 1 (Unlimited), and REACH unaffected. All are classified under ECCN EAR99 and HTSUS 8541.29.0095.

Frequently Asked Questions (FAQ)

Q: Can IPD35N10S3L26ATMA1 directly replace IRFR540ZPBF without circuit modifications?

A: Yes. Both parts share identical voltage (100V) and current (35A) ratings, operate across -55°C to 175°C, and use the same TO-252-3 DPAK package. The improved electrical characteristics (lower Rds On and Qg) are beneficial for circuit performance. No modifications are required.

Q: What is the difference between the Infineon OptiMOS™ and onsemi PowerTrench® series substitutes?

A: Both series meet the 100V/35A electrical requirements and TO-252-3 DPAK package specification. OptiMOS™ parts (IPD35N10S3L26ATMA1, IPD30N10S3L34ATMA1) are from the same manufacturer as the original part. PowerTrench® parts (FDD3670, FDD86102) are from onsemi and offer alternative sourcing. Selection depends on supply chain requirements and design qualification procedures.

Q: Why are STD25NF10LT4 and STD25NF10T4 listed as substitutes if they have only 25A rating versus 35A?

A: These parts are listed as available alternatives for applications where 25A continuous drain current is sufficient. They maintain the 100V voltage rating and TO-252-3 DPAK package. Use these only if circuit design permits reduced current capacity.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All listed substitute parts use TO-252-3 DPAK (2 Leads + Tab) surface mount packaging, identical to IRFR540ZPBF. This ensures mechanical and thermal compatibility on existing PCB layouts.

Q: What does "Tc" versus "Ta" mean in the current ratings?

A: "Tc" indicates current rating at case temperature (25°C), while "Ta" indicates current rating at ambient temperature. Tc ratings are more conservative for thermal design. IRFR540ZPBF uses Tc rating (35A @ Tc). Most substitutes also use Tc ratings for consistency.

Q: Which substitute offers the best thermal performance?

A: IPD35N10S3L26ATMA1 provides the lowest on-state resistance (24 mOhm @ 35A, 10V) and lowest power dissipation (71W) among 35A-rated alternatives, resulting in superior thermal performance and reduced junction temperature rise.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original IRFR540ZPBF compliance status.

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