IRF540ZSTRRPBF N-Channel 100V 36A MOSFET Equivalent & Substitute Parts

Part Overview

The IRF540ZSTRRPBF is an N-Channel MOSFET manufactured by Infineon Technologies in the HEXFET® series, rated for 100V drain-to-source voltage and 36A continuous drain current in a D2PAK surface mount package. This device is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for existing designs.

Key Parameters

Parameter	IRF540ZSTRRPBF	Unit
FET Type	N-Channel	—
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	36	A (Tc)
On-State Resistance (Rds On) @ 22A, 10V	26.5	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	63	nC
Power Dissipation (Max)	92	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	D2PAK (TO-263-3)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the IRF540ZSTRRPBF are selected based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution validity:

Critical Parameters (Must Match or Exceed):

Drain-to-Source Voltage (Vdss): 100V minimum
Package Type: D2PAK (TO-263-3) surface mount
Operating Temperature Range: -55°C to 175°C minimum
FET Type: N-Channel MOSFET technology
RoHS Compliance: ROHS3 Compliant

Performance Parameters (Acceptable if Equal or Superior):

Continuous Drain Current (Id): 36A or higher
On-State Resistance (Rds On): 26.5 mOhm or lower
Power Dissipation: 92W or higher
Gate Charge (Qg): Lower values preferred for switching efficiency

Substitute parts are grouped into two categories: direct replacements with equivalent or superior current ratings, and higher-performance alternatives suitable for designs requiring enhanced thermal or current handling capabilities.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg (nC)	Power Diss. (W)	Package	Status
IRF540ZSTRRPBF	Infineon	100	36	26.5	63	92	D2PAK	Discontinued
IRF540SPBF	Vishay Siliconix	100	28	77	72	150	D2PAK	Active
IRF540STRLPBF	Vishay Siliconix	100	28	77	72	150	D2PAK	Active
IRF540STRRPBF	Vishay Siliconix	100	28	77	72	150	D2PAK	Active
BUK9629-100B,118	Nexperia USA Inc.	100	46	27	33	157	D2PAK	Active
BUK7626-100B,118	Nexperia USA Inc.	100	49	26	38	157	D2PAK	Obsolete
HUF76639S3ST	onsemi	100	51	26	86	180	D2PAK	Active
IPB50N10S3L16ATMA1	Infineon	100	50	15.4	64	100	TO-263-3	Active
PSMN016-100BS,118	Nexperia USA Inc.	100	57	16	49	148	D2PAK	Active
IXTA64N10L2	IXYS	100	64	32	100	D2PAK	Active
IXTA75N10P	IXYS	100	75	25	74	D2PAK	Active

Engineering Selection Recommendations

Direct Replacement Candidates (Equivalent Current Rating):

BUK9629-100B,118 (Nexperia) is the primary direct substitute. It maintains 100V Vdss rating, provides 46A continuous drain current (exceeding the 36A requirement), and is housed in D2PAK package. On-state resistance of 27 mOhm is comparable to the original 26.5 mOhm. Product status is Active with AEC-Q101 automotive qualification. RoHS3 compliance and unlimited MSL rating ensure compatibility with existing supply chain requirements.

Higher-Performance Alternatives:

HUF76639S3ST (onsemi UltraFET™) provides 51A continuous current with 26 mOhm on-state resistance and 180W power dissipation in D2PAK package. Active product status with full RoHS3 compliance.

PSMN016-100BS,118 (Nexperia) delivers 57A continuous current with superior 16 mOhm on-state resistance, reducing conduction losses. D2PAK package and Active status support long-term availability.

IPB50N10S3L16ATMA1 (Infineon OptiMOS™) offers 50A current with 15.4 mOhm on-state resistance and 100W power dissipation. Active product status ensures supply continuity. TO-263-3 package is mechanically compatible with D2PAK footprints.

Lower-Performance Alternatives (Current Derating Required):

IRF540SPBF, IRF540STRLPBF, and IRF540STRRPBF (Vishay Siliconix) are rated for 28A continuous current, below the original 36A specification. These parts are suitable only for designs where current requirements can be reduced or where thermal management permits operation at reduced current levels. All three maintain 100V Vdss, D2PAK package, and Active product status.

Obsolete Parts (Not Recommended):

BUK7626-100B,118 (Nexperia TrenchMOS™) is marked Obsolete and should not be selected for new designs despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I use IRF540SPBF as a direct replacement for IRF540ZSTRRPBF?

A: IRF540SPBF shares the same 100V Vdss rating and D2PAK package, but is rated for 28A continuous current compared to the original 36A. This part is suitable only if your circuit operates at 28A or below. The higher on-state resistance (77 mOhm vs. 26.5 mOhm) will increase power dissipation.

Q: What is the difference between BUK9629-100B,118 and BUK7626-100B,118?

A: Both are Nexperia TrenchMOS™ devices in D2PAK package with 100V Vdss. BUK9629-100B,118 is Active with AEC-Q101 automotive qualification and 46A rating. BUK7626-100B,118 is Obsolete and should not be used for new designs. Select BUK9629-100B,118 for ongoing production.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitute parts listed are ROHS3 Compliant. Verify RoHS status in procurement documentation for specific lot codes if required for regulated applications.

Q: Can I use IXTA75N10P in place of IRF540ZSTRRPBF?

A: IXTA75N10P is mechanically and electrically compatible, offering superior performance with 75A continuous current, 25 mOhm on-state resistance, and 360W power dissipation in D2PAK package. This part is suitable for designs requiring higher current capacity or improved thermal performance. Operating temperature range is -55°C to 175°C, matching the original specification.

Q: What is the significance of gate charge (Qg) differences between parts?

A: Gate charge affects switching speed and driver circuit requirements. Lower Qg values (e.g., BUK9629-100B,118 at 33 nC) enable faster switching with lower driver power consumption. Higher Qg values (e.g., HUF76639S3ST at 86 nC) may require higher driver current but do not prevent substitution if the driver circuit is rated accordingly.

Q: Are packaging variants (Tube vs. Tape & Reel) electrically equivalent?

A: Yes. Packaging variants such as IRF540SPBF (Tube) and IRF540STRLPBF (Tape & Reel) are electrically identical. Selection depends on assembly process requirements and procurement volume. Both are Active products from Vishay Siliconix.

Q: Which substitute offers the best on-state resistance performance?

A: IPB50N10S3L16ATMA1 provides the lowest on-state resistance at 15.4 mOhm, followed by PSMN016-100BS,118 at 16 mOhm. These parts minimize conduction losses and are preferred for high-current or efficiency-critical applications.

Q: Can I use parts rated for higher current in lower-current applications?

A: Yes. Parts rated for higher current (e.g., IXTA75N10P at 75A) are suitable for applications requiring only 36A. The device will operate within safe margins with no adverse effects. Verify that the on-state resistance and power dissipation characteristics are acceptable for your thermal design.

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