IRF9520NSPBF P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF9520NSPBF 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, making equivalent substitute parts necessary for ongoing design support and procurement.

The IRF9520NSPBF 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, active equivalent parts from Vishay Siliconix are available as direct functional replacements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	6.8	A (Tc)
Drive Voltage (Max Rds On)	10	V
Rds On (Max) @ Id, Vgs	480	mOhm @ 4A, 10V
Gate Threshold Voltage Vgs(th) (Max) @ Id	4	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	27	nC @ 10V
Maximum Gate Voltage (Vgs)	±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
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the IRF9520NSPBF 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 Tc
Gate Threshold Voltage (Vgs(th)): 4V @ 250µA
Maximum Gate Voltage (Vgs): ±20V
Operating Temperature Range: -55°C to 175°C (TJ)
FET Type: P-Channel
Technology: MOSFET (Metal Oxide)

Mechanical Equivalence Criteria:

Package: TO-263-3, D2PAK (2 Leads + Tab)
Mounting Type: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in secondary parameters such as Rds On, Gate Charge, and Input Capacitance are within acceptable engineering tolerances for this device class and do not affect functional interchangeability in standard applications.

Parameter Comparison

Parameter	IRF9520NSPBF (Infineon)	IRF9520SPBF (Vishay)	IRF9520STRLPBF (Vishay)	IRF9520STRRPBF (Vishay)	Unit
Manufacturer	Infineon Technologies	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix
Product Status	Obsolete	Active	Active	Active
Drain to Source Voltage (Vdss)	100	100	100	100	V
Continuous Drain Current (Id) @ 25°C	6.8	6.8	6.8	6.8	A (Tc)
Drive Voltage (Max Rds On)	10	10	10	10	V
Rds On (Max) @ Id, Vgs	480 @ 4A, 10V	600 @ 4.1A, 10V	600 @ 4.1A, 10V	600 @ 4.1A, 10V	mOhm
Gate Threshold Voltage Vgs(th) (Max) @ Id	4 @ 250µA	4 @ 250µA	4 @ 250µA	4 @ 250µA	V
Gate Charge (Qg) (Max) @ Vgs	27 @ 10V	18 @ 10V	18 @ 10V	18 @ 10V	nC
Maximum Gate Voltage (Vgs)	±20	±20	±20	±20	V
Input Capacitance (Ciss) (Max) @ Vds	350 @ 25V	390 @ 25V	390 @ 25V	390 @ 25V	pF
Power Dissipation (Max)	3.8 (Ta), 48 (Tc)	3.7 (Ta), 60 (Tc)	3.7 (Ta), 60 (Tc)	3.7 (Ta), 60 (Tc)	W
Operating Temperature Range	-55 to 175	-55 to 175	-55 to 175	-55 to 175	°C (TJ)
Package Type	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging Option	Tube	Tube	Tape & Reel (TR)	Tape & Reel (TR)
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Affected	Vendor Undefined	Not specified

Engineering Selection Recommendations

Primary Substitute: IRF9520STRLPBF

The IRF9520STRLPBF from Vishay Siliconix is the recommended substitute for the obsolete IRF9520NSPBF. This part maintains full electrical and mechanical equivalence while offering the following advantages:

Active product status ensures long-term availability and supply chain continuity
ROHS3 compliance supports modern manufacturing and environmental standards
Tape & Reel packaging (TR) provides efficient automated assembly integration
Highest inventory availability (23,443 pieces) among substitute options
Identical electrical performance across all critical parameters

Secondary Substitute: IRF9520SPBF

The IRF9520SPBF is functionally equivalent and suitable for applications where tube packaging is preferred. This part is active and ROHS3 compliant, with lower inventory levels (1,250 pieces) compared to the tape & reel variant.

Tertiary Substitute: IRF9520STRRPBF

The IRF9520STRRPBF provides an alternative tape & reel option with identical electrical specifications. Limited inventory (1,900 pieces) makes this a secondary choice when IRF9520STRLPBF availability is constrained.

Compliance Considerations:

All Vishay substitute parts are ROHS3 compliant, addressing modern regulatory requirements. The original IRF9520NSPBF carries REACH Unaffected status, while Vishay variants show REACH Affected or Vendor Undefined status. Designers must verify REACH compliance requirements for their specific application and supply chain.

Frequently Asked Questions (FAQ)

Q: Can IRF9520SPBF, IRF9520STRLPBF, and IRF9520STRRPBF be used interchangeably with IRF9520NSPBF?

A: Yes. All three Vishay parts are electrically and mechanically equivalent to the IRF9520NSPBF. They share identical Vdss (100V), Id (6.8A), Vgs(th) (4V), operating temperature range (-55°C to 175°C), and D2PAK package configuration. The differences are packaging format (tube versus tape & reel) and inventory availability.

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. Electrically and mechanically, all three parts are identical. The suffix designations (STR, L, R) indicate tape & reel configuration variants. Selection depends on assembly process requirements and inventory needs.

Q: Why does the IRF9520NSPBF show as obsolete?

A: The IRF9520NSPBF is an Infineon product that has reached end-of-life status. Infineon has discontinued active production and support. Vishay Siliconix manufactures functionally equivalent alternatives under the same base part number (IRF9520) with different packaging and suffix designations, ensuring design continuity.

Q: Are there electrical performance differences between the Infineon and Vishay versions?

A: Minor variations exist in secondary parameters. The Infineon IRF9520NSPBF specifies Rds On (Max) of 480 mOhm @ 4A, 10V and Gate Charge of 27 nC @ 10V. Vishay variants specify 600 mOhm @ 4.1A, 10V and 18 nC @ 10V respectively. These differences are within acceptable engineering tolerances for this device class and do not affect functional interchangeability in standard switching applications. Power dissipation ratings also differ slightly (Infineon: 48W Tc; Vishay: 60W Tc), with Vishay offering improved thermal performance.

Q: Which substitute part should I select for new designs?

A: For new designs, IRF9520STRLPBF is recommended due to active product status, ROHS3 compliance, tape & reel packaging for automated assembly, and superior inventory availability. This part provides the best long-term supply chain security and manufacturing integration.

Q: Is the D2PAK package compatible with TO-263 footprints?

A: Yes. The D2PAK package is equivalent to TO-263-3 (TO-263AB). All substitute parts use the same package designation and are footprint-compatible with existing IRF9520NSPBF designs. No PCB layout modifications are required.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All parts, including the original IRF9520NSPBF and all Vishay substitutes, carry MSL 1 (Unlimited) rating. This indicates unlimited shelf life under normal storage conditions without special moisture control requirements.

Q: Are there REACH or RoHS compliance differences I should consider?

A: The original IRF9520NSPBF is REACH Unaffected. Vishay substitutes are ROHS3 Compliant, which is advantageous for modern manufacturing. REACH status varies: IRF9520SPBF is REACH Affected, IRF9520STRLPBF shows Vendor Undefined, and IRF9520STRRPBF status is not specified. Verify REACH compliance requirements for your specific application and geographic market before final part selection.

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