IRFS7540PBF N-Channel MOSFET 60V 110A Equivalent & Substitute Parts

Part Overview

The IRFS7540PBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 60V drain-to-source voltage and 110A continuous drain current in a D2PAK surface mount package. This device is part of the HEXFET® and StrongIRFET™ series and is designed for high-current switching applications requiring efficient power dissipation up to 160W.

The IRFS7540PBF is currently discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Substitute devices must maintain compatibility with the original electrical specifications, package footprint, and thermal characteristics while meeting current product availability and compliance requirements.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	110	A
On-State Resistance (Rds On) @ 65A, 10V	5.1	mOhm
Gate Threshold Voltage (Vgs(th)) @ 100µA	3.7	V
Gate Charge (Qg) @ 10V	130	nC
Power Dissipation (Max)	160	W
Operating Temperature Range	-55 to 175	°C
Package Type	D2PAK (TO-263-3)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the IRFS7540PBF is determined by the following critical parameters:

Voltage Rating Compatibility: Substitute devices must have a Vdss rating equal to or greater than 60V. Devices rated at 75V are acceptable as they provide voltage margin while maintaining the same or lower on-state resistance characteristics.

Current Rating Compatibility: Substitute devices must have a continuous drain current (Id) rating equal to or greater than 110A at 25°C. Higher current ratings provide design margin and improved thermal performance.

Package Compatibility: All substitute devices must use the D2PAK (TO-263-3) surface mount package to ensure PCB footprint compatibility and thermal interface consistency.

On-State Resistance (Rds On): Substitute devices should maintain Rds On values at or below the original specification to ensure equivalent or improved efficiency and thermal performance.

Operating Temperature Range: All substitute devices must support the full -55°C to 175°C operating temperature range.

Compliance and Status: Substitute devices must be RoHS3 compliant and have active product status to ensure long-term availability and regulatory compliance.

Parameter Comparison

Parameter	IRFS7540PBF	PSMN1R7-60BS,118	BUK764R0-55B,118	IXFA230N075T2-7	IXTA170N075T2	STB100N6F7	STB130N6F7
Manufacturer	Infineon	Nexperia	Nexperia	IXYS	IXYS	STMicroelectronics	STMicroelectronics
Vdss (V)	60	60	55	75	75	60	60
Id @ 25°C (A)	110	120	75	230	170	100	80
Rds On (mOhm)	5.1 @ 65A, 10V	2.0 @ 25A, 10V	4.0 @ 25A, 10V	4.2 @ 50A, 10V	5.4 @ 50A, 10V	5.6 @ 50A, 10V	5.0 @ 40A, 10V
Vgs(th) (V)	3.7 @ 100µA	4.0 @ 1mA	4.0 @ 1mA	4.0 @ 1mA	4.0 @ 250µA	4.0 @ 250µA	4.0 @ 250µA
Qg @ 10V (nC)	130	137	86	178	109	30	42
Power Dissipation (W)	160	306	300	480	360	125	160
Package	D2PAK	D2PAK	D2PAK	TO-263-7	TO-263AA	TO-263	TO-263
Product Status	Discontinued	Active	Active	Active	Active	Active	Active
Operating Temp (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175
RoHS3 Compliant	Yes	Yes	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Primary Substitute: PSMN1R7-60BS,118 (Nexperia)

The PSMN1R7-60BS,118 is the closest functional equivalent to the IRFS7540PBF. It maintains the 60V voltage rating, exceeds the 110A current requirement with 120A continuous drain current, and provides superior on-state resistance of 2.0 mOhm. The device is packaged in D2PAK, ensuring direct PCB footprint compatibility. This part is currently active with 1900 units in stock and is RoHS3 compliant. The higher power dissipation rating of 306W provides additional thermal margin.

Secondary Substitute: STB100N6F7 (STMicroelectronics)

The STB100N6F7 maintains the 60V voltage rating and provides 100A continuous drain current, which approaches the original 110A specification. It is packaged in D2PAK (TO-263) for direct compatibility. This device is active with 2202 units in stock and is RoHS3 compliant. The STripFET™ F7 series offers lower gate charge (30 nC) compared to the original part, resulting in faster switching characteristics. Power dissipation is rated at 125W.

Tertiary Substitute: STB130N6F7 (STMicroelectronics)

The STB130N6F7 maintains the 60V voltage rating and 160W power dissipation matching the original specification. It provides 80A continuous drain current and is packaged in D2PAK (TO-263). This device is active with 21300 units in stock, offering the highest inventory availability. It is RoHS3 compliant and part of the STripFET™ F7 series.

Higher Voltage Alternatives: IXFA230N075T2-7 and IXTA170N075T2 (IXYS)

These devices operate at 75V, providing additional voltage margin. The IXFA230N075T2-7 delivers 230A continuous drain current with 480W power dissipation, while the IXTA170N075T2 provides 170A with 360W dissipation. Both are active products with strong inventory availability. However, the IXFA230N075T2-7 uses a TO-263-7 package variant, which may require PCB layout verification for pin compatibility.

Lower Current Alternative: BUK764R0-55B,118 (Nexperia)

The BUK764R0-55B,118 operates at 55V with 75A continuous drain current. This device is suitable only for applications where the current requirement can be reduced or where multiple devices are paralleled. It is AEC-Q101 qualified for automotive applications and offers 300W power dissipation. This part is active with 7424 units in stock.

All substitute devices are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can the PSMN1R7-60BS,118 be used as a direct replacement for the IRFS7540PBF?

A: Yes. The PSMN1R7-60BS,118 maintains the same 60V voltage rating, exceeds the 110A current requirement with 120A, and uses the identical D2PAK package. The on-state resistance is superior at 2.0 mOhm, and the operating temperature range matches the original specification. No circuit modifications are required.

Q: What is the difference between the IXFA230N075T2-7 and IXTA170N075T2?

A: Both devices operate at 75V but differ in current rating and package configuration. The IXFA230N075T2-7 provides 230A with a TO-263-7 package (7 leads plus tab), while the IXTA170N075T2 provides 170A with a TO-263AA package (3 leads plus tab). The TO-263AA package is more compatible with D2PAK footprints. Both are active products with strong availability.

Q: Why do the STB100N6F7 and STB130N6F7 have lower current ratings than the original IRFS7540PBF?

A: The STB100N6F7 provides 100A and the STB130N6F7 provides 80A, both below the original 110A specification. These devices are suitable for applications where the full 110A is not required or where thermal management allows operation at reduced current levels. For applications requiring the full 110A specification, the PSMN1R7-60BS,118 is the recommended choice.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute devices listed are RoHS3 compliant and REACH unaffected, ensuring regulatory compliance for new production and field replacements.

Q: Can the BUK764R0-55B,118 be used in place of the IRFS7540PBF?

A: The BUK764R0-55B,118 operates at 55V with 75A continuous drain current, both below the original specifications. This device is suitable only for applications where the voltage and current requirements can be reduced. It is not recommended as a direct replacement for the IRFS7540PBF in designs requiring the full 60V and 110A ratings.

Q: What is the significance of the gate charge (Qg) parameter in selecting a substitute?

A: Gate charge affects switching speed and driver circuit requirements. The IRFS7540PBF has a gate charge of 130 nC. Substitute devices with lower gate charge (such as STB100N6F7 at 30 nC) switch faster, while those with higher gate charge (such as IXFA230N075T2-7 at 178 nC) switch more slowly. The driver circuit must be capable of supplying the required gate current for the selected device.

Q: Is the D2PAK package footprint identical across all substitute devices?

A: The D2PAK (TO-263-3) package is standardized for devices with 3 leads plus tab. All listed substitutes using D2PAK or TO-263 designation share the same footprint. However, the IXFA230N075T2-7 uses a TO-263-7 variant with 7 leads plus tab, which requires verification of PCB layout compatibility before substitution.

Q: What inventory considerations should be made when selecting a substitute?

A: Current inventory levels vary significantly. The STB130N6F7 has the highest availability at 21300 units, while the IXFA230N075T2-7 has 834 units and the PSMN1R7-60BS,118 has 1900 units. For long-term production requirements, higher inventory levels provide supply chain stability.

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