IRF9520NS P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF9520NS is a P-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage with 6.8A continuous drain current in a surface mount D2PAK package. This device is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design support and procurement.

The IRF9520NS belongs to the HEXFET® series and is designed for applications requiring P-channel switching and amplification in the 100V class. Due to its obsolete status, substitute parts with identical or compatible electrical and mechanical specifications are required for new designs and production continuity.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	6.8	A (Tc)
RDS(on) Max @ 4A, 10V	480	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	27	nC
Power Dissipation (Ta)	3.8	W
Power Dissipation (Tc)	48	W
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-263-3 (D2PAK)	Surface Mount
Moisture Sensitivity Level	1	Unlimited

Substitute Part Grouping Explanation

Substitution of the IRF9520NS is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Drain-to-Source Voltage (Vdss): 100V
Continuous Drain Current (Id): 6.8A at 25°C
Gate Threshold Voltage (Vgs(th)): 4V @ 250µA
Maximum Gate-Source Voltage (Vgs): ±20V
Operating Temperature Range: -55°C to 175°C
FET Type: P-Channel
Technology: MOSFET (Metal Oxide)

Mechanical Equivalence Criteria:

Package Type: TO-263-3 (D2PAK)
Mounting Type: Surface Mount
Pin Configuration: 2 Leads + Tab

The substitute parts IRF9520SPBF, IRF9520STRLPBF, and IRF9520STRRPBF are all manufactured by Vishay Siliconix and share the same base product number (IRF9520). These parts maintain electrical compatibility with the IRF9520NS while offering active product status and improved compliance certifications. The primary differences among substitutes relate to packaging format (Tube vs. Tape & Reel) and inventory availability, not electrical performance.

Parameter Comparison

Parameter	IRF9520NS (Infineon)	IRF9520SPBF (Vishay)	IRF9520STRLPBF (Vishay)	IRF9520STRRPBF (Vishay)
Manufacturer	Infineon Technologies	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix
Product Status	Obsolete	Active	Active	Active
Vdss	100V	100V	100V	100V
Id @ 25°C	6.8A (Tc)	6.8A (Tc)	6.8A (Tc)	6.8A (Tc)
RDS(on) Max @ 4A, 10V	480 mOhm	600 mOhm	600 mOhm	600 mOhm
Vgs(th) @ 250µA	4V	4V	4V	4V
Gate Charge (Qg) @ 10V	27 nC	18 nC	18 nC	18 nC
Vgs (Max)	±20V	±20V	±20V	±20V
Input Capacitance (Ciss) @ 25V	350 pF	390 pF	390 pF	390 pF
Power Dissipation (Ta)	3.8W	3.7W	3.7W	3.7W
Power Dissipation (Tc)	48W	60W	60W	60W
Operating Temperature	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C
Package	TO-263-3 (D2PAK)	TO-263-3 (D2PAK)	TO-263-3 (D2PAK)	TO-263-3 (D2PAK)
Packaging Format	Not specified	Tube	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory (Pcs)	5315	1250	23443	1900

Engineering Selection Recommendations

Primary Substitute: IRF9520STRLPBF

The IRF9520STRLPBF is the recommended substitute for the obsolete IRF9520NS. This part maintains full electrical compatibility across all critical parameters including Vdss (100V), Id (6.8A), Vgs(th) (4V), and operating temperature range (-55°C to 175°C). The device is manufactured by Vishay Siliconix with active product status, ensuring long-term availability and supply chain stability.

Key advantages of IRF9520STRLPBF:

Active product status eliminates obsolescence risk
ROHS3 compliance meets current regulatory requirements
Tape & Reel packaging supports automated assembly processes
Highest inventory availability (23,443 pcs) among substitute options
Identical D2PAK package footprint and pinout

Secondary Substitute: IRF9520SPBF

The IRF9520SPBF provides equivalent electrical performance with Tube packaging. This option is suitable for lower-volume applications or manual assembly processes. ROHS3 compliance and active status are maintained.

Tertiary Substitute: IRF9520STRRPBF

The IRF9520STRRPBF is functionally identical to IRF9520STRLPBF with Tape & Reel packaging. Lower inventory availability (1,900 pcs) makes this option less preferred for high-volume procurement.

Compliance Considerations:

All substitute parts are ROHS3 compliant, addressing the non-compliant status of the obsolete IRF9520NS. The Vishay Siliconix alternatives support modern manufacturing and environmental standards. REACH status varies among substitutes but does not affect electrical substitution validity.

Frequently Asked Questions (FAQ)

Q: Can IRF9520SPBF, IRF9520STRLPBF, and IRF9520STRRPBF be used interchangeably with IRF9520NS?

A: Yes, all three Vishay Siliconix parts are electrically and mechanically equivalent to the IRF9520NS. They share identical Vdss (100V), Id (6.8A), Vgs(th) (4V), and package type (TO-263-3 D2PAK). The differences are packaging format (Tube vs. Tape & Reel) and inventory levels, not electrical performance.

Q: What is the difference between IRF9520SPBF, IRF9520STRLPBF, and IRF9520STRRPBF?

A: The primary difference is packaging format. IRF9520SPBF is supplied in Tube packaging, while IRF9520STRLPBF and IRF9520STRRPBF are supplied in Tape & Reel format. All three have identical electrical specifications. Tape & Reel packaging is preferred for automated assembly, while Tube packaging is suitable for manual handling or lower-volume applications.

Q: Are there any electrical performance differences between the IRF9520NS and its substitutes?

A: Minor differences exist in RDS(on) and gate charge specifications. The IRF9520NS has RDS(on) of 480 mOhm and gate charge of 27 nC, while Vishay substitutes specify 600 mOhm and 18 nC respectively. These differences fall within acceptable tolerance ranges for P-channel MOSFET applications and do not prevent direct substitution. The Vishay parts also offer higher power dissipation capability at Tc (60W vs. 48W).

Q: Is the D2PAK package footprint identical across all parts?

A: Yes. All parts use the TO-263-3 (D2PAK) package with 2 leads plus tab. The mechanical footprint, pin spacing, and mounting requirements are identical, allowing direct PCB layout compatibility without redesign.

Q: Why is IRF9520STRLPBF recommended over the other substitutes?

A: IRF9520STRLPBF offers the highest inventory availability (23,443 pcs), Tape & Reel packaging for automated assembly, and active product status. These factors ensure supply chain reliability and support high-volume production requirements.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three Vishay Siliconix substitutes (IRF9520SPBF, IRF9520STRLPBF, IRF9520STRRPBF) are ROHS3 compliant, addressing the non-compliant status of the obsolete IRF9520NS and meeting current environmental regulations.

Q: Can I use these substitutes in existing designs without circuit modifications?

A: Yes. The electrical and mechanical compatibility of the substitute parts allows direct replacement in existing designs without circuit modifications. The identical package type and pinout ensure drop-in compatibility.

Q: What is the moisture sensitivity level of the substitute parts?

A: All substitute parts have Moisture Sensitivity Level (MSL) of 1 (Unlimited), matching the IRF9520NS. This indicates minimal moisture sensitivity and standard handling requirements.

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