IRF9520NSTRL Equivalent & Substitute Parts

Part Overview

The IRF9520NSTRL 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 equivalent substitute components for ongoing design support and procurement.

The IRF9520NSTRL operates across a temperature range of -55°C to 175°C (junction temperature) and is designed for applications requiring P-channel switching and amplification in power management circuits. Due to its obsolete status, equivalent active alternatives from other manufacturers are required to maintain design continuity and ensure long-term component availability.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	100	V
Current - Continuous Drain (Id) @ 25°C	6.8	A (Tc)
Rds On (Max) @ Id, Vgs	480	mOhm @ 4A, 10V
Vgs(th) (Max) @ Id	4	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	27	nC @ 10V
Vgs (Max)	±20	V
Input Capacitance (Ciss) (Max) @ Vds	350	pF @ 25V
Power Dissipation (Max)	3.8 (Ta), 48 (Tc)	W
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-263-3, D2PAK	Surface Mount
FET Type	P-Channel	-
Technology	MOSFET (Metal Oxide)	-

Substitute Part Grouping Explanation

Substitution of the IRF9520NSTRL 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 Voltage (Vgs): ±20V
Operating Temperature Range: -55°C to 175°C

Mechanical Equivalence Criteria:

Package Type: TO-263-3 (D2PAK) surface mount
Pin configuration: 2 Leads + Tab

Compliance Considerations:

RoHS Status: Substitute parts must be RoHS3 compliant (IRF9520NSTRL is RoHS non-compliant)
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All three substitute parts (IRF9520SPBF, IRF9520STRLPBF, IRF9520STRRPBF) meet these criteria and are manufactured by Vishay Siliconix as active products with RoHS3 compliance.

Parameter Comparison

Parameter	IRF9520NSTRL (Main)	IRF9520SPBF	IRF9520STRLPBF	IRF9520STRRPBF
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
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 (D2PAK)	TO-263 (D2PAK)	TO-263 (D2PAK)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Format	-	Tube	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Substitute: IRF9520STRLPBF

The IRF9520STRLPBF is the recommended substitute for the obsolete IRF9520NSTRL. This part is manufactured by Vishay Siliconix as an active product with RoHS3 compliance. It maintains electrical equivalence across all critical parameters including Vdss (100V), Id (6.8A), Vgs(th) (4V), and operating temperature range (-55°C to 175°C). The packaging is identical (TO-263-3, D2PAK surface mount). Current inventory availability is 23,443 pieces in Tape & Reel format, ensuring reliable procurement for production volumes.

Secondary Substitute: IRF9520STRRPBF

The IRF9520STRRPBF is functionally equivalent to IRF9520STRLPBF and serves as an alternative when specific tape & reel specifications differ. Both parts share identical electrical characteristics and RoHS3 compliance. Inventory availability is 1,900 pieces.

Tertiary Substitute: IRF9520SPBF

The IRF9520SPBF is electrically equivalent and available in Tube packaging format (1,250 pieces in stock). This option is suitable for applications where tape & reel format is not required. All three substitutes are interchangeable from an electrical and mechanical standpoint.

Compliance Note:

All substitute parts are RoHS3 compliant, addressing the RoHS non-compliance status of the original IRF9520NSTRL. This compliance upgrade is beneficial for designs subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can IRF9520SPBF, IRF9520STRLPBF, and IRF9520STRRPBF be used interchangeably with IRF9520NSTRL?

A: Yes. All three substitute parts are electrically and mechanically equivalent. They share identical Vdss (100V), Id (6.8A), Vgs(th) (4V), and operating temperature specifications. The primary differences are packaging format (Tube vs. Tape & Reel) and inventory availability.

Q: What is the difference between IRF9520STRLPBF and IRF9520STRRPBF?

A: Both parts are electrically identical and manufactured by Vishay Siliconix. The difference lies in tape & reel specifications (STRL vs. STRR designations indicate different reel configurations). Selection depends on assembly equipment compatibility and procurement requirements.

Q: Why is Rds On higher in the substitute parts (600 mOhm vs. 480 mOhm)?

A: The substitute parts specify Rds On at 4.1A versus 4A for the original part. Both values remain within acceptable operating parameters for P-channel MOSFET applications. The higher power dissipation rating (60W Tc vs. 48W Tc) in substitute parts provides additional thermal margin.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three substitute parts (IRF9520SPBF, IRF9520STRLPBF, IRF9520STRRPBF) are RoHS3 compliant, whereas the original IRF9520NSTRL is RoHS non-compliant. This represents an improvement for designs subject to RoHS regulations.

Q: What is the MSL rating for these parts?

A: All parts, including the original and substitutes, have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: Can I use these parts in existing PCB designs without layout modifications?

A: Yes. All parts use the identical TO-263-3 (D2PAK) surface mount package with the same pin configuration (2 Leads + Tab). No PCB layout changes are required.

Q: Which substitute should I select for high-volume production?

A: IRF9520STRLPBF is recommended for high-volume production due to highest inventory availability (23,443 pieces) and Tape & Reel packaging, which is optimized for automated assembly processes.

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