IRF9Z24NSTRR P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF9Z24NSTRR is a P-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage with 12A continuous drain current in a D2PAK surface mount package. This device is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Substitute parts must maintain functional compatibility through matching or exceeding key electrical parameters while conforming to the same or compatible package specifications.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	12	A (Tc)
Rds On (Max) @ Id, Vgs	175 mOhm @ 7.2A, 10V	—
Gate Threshold Voltage Vgs(th) (Max)	4	V @ 250µA
Gate Charge (Qg) (Max)	19	nC @ 10V
Power Dissipation (Max)	3.8W (Ta), 45W (Tc)	—
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-263-3, D2PAK	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution logic for the IRF9Z24NSTRR is based on the following critical parameters:

Electrical Compatibility Criteria:

FET Type: P-Channel topology must be maintained
Drain to Source Voltage (Vdss): Substitute must equal or exceed 55V
Continuous Drain Current (Id): Substitute must equal or exceed 12A at 25°C
Rds On (Max): Substitute must not exceed 175 mOhm at specified conditions
Gate Threshold Voltage: Must remain within ±20V Vgs maximum rating
Operating Temperature: Must support -55°C to 175°C range

Mechanical Compatibility Criteria:

Package: D2PAK (TO-263-3) surface mount configuration required
Mounting: Surface mount technology maintained

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (Vishay Siliconix IRF9Z24 Series): IRF9Z24SPBF, IRF9Z24STRLPBF, and IRF9Z24STRRPBF maintain the IRF9Z24 base product number with identical electrical specifications (60V Vdss, 11A Id, 280 mOhm Rds On). These differ only in packaging format (Tube vs. Tape & Reel) and RoHS compliance status. All are active products.

Category B - Enhanced Substitute (onsemi FQB22P10TM): FQB22P10TM exceeds the IRF9Z24NSTRR specifications with 100V Vdss, 22A Id, and 125 mOhm Rds On. This part provides superior voltage and current ratings while maintaining D2PAK packaging and active product status with RoHS3 compliance.

Parameter Comparison

Parameter	IRF9Z24NSTRR (Main)	IRF9Z24SPBF	IRF9Z24STRLPBF	IRF9Z24STRRPBF	FQB22P10TM
Manufacturer	Infineon	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix	onsemi
Product Status	Obsolete	Active	Active	Active	Active
Vdss (V)	55	60	60	60	100
Id @ 25°C (A)	12	11	11	11	22
Rds On (Max) mOhm	175 @ 7.2A, 10V	280 @ 6.6A, 10V	280 @ 6.6A, 10V	280 @ 6.6A, 10V	125 @ 11A, 10V
Vgs(th) (Max) (V)	4 @ 250µA	4 @ 250µA	4 @ 250µA	4 @ 250µA	4 @ 250µA
Gate Charge Qg (nC)	19 @ 10V	19 @ 10V	19 @ 10V	19 @ 10V	50 @ 10V
Power Dissipation (W)	3.8 (Ta), 45 (Tc)	3.7 (Ta), 60 (Tc)	3.7 (Ta), 60 (Tc)	3.7 (Ta), 60 (Tc)	3.75 (Ta), 125 (Tc)
Operating Temp (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Package	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263, D2PAK
Packaging Format	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement with Minimal Design Impact:

IRF9Z24STRRPBF and IRF9Z24STRLPBF are recommended as primary substitutes. Both are active Vishay Siliconix products with ROHS3 compliance. IRF9Z24STRRPBF offers the highest inventory availability (8300 pcs) in Tape & Reel packaging, suitable for automated assembly. IRF9Z24STRLPBF provides equivalent specifications with 5410 pcs in stock. These parts maintain the IRF9Z24 base product lineage with identical electrical performance to the obsolete IRF9Z24NSTRR within the specified parameter ranges.

For Enhanced Performance Applications:

FQB22P10TM (onsemi) is suitable when design margins require improved specifications. This part provides doubled drain current capability (22A vs. 12A), significantly higher voltage rating (100V vs. 55V), and superior on-resistance (125 mOhm vs. 175 mOhm). The D2PAK package maintains mechanical compatibility. FQB22P10TM carries active product status and ROHS3 compliance with 15226 pcs available inventory.

Compliance Considerations:

All recommended substitutes are ROHS3 compliant, addressing regulatory requirements absent in the obsolete IRF9Z24NSTRR. All parts maintain MSL Level 1 (Unlimited) moisture sensitivity classification and EAR99 export control status.

Frequently Asked Questions (FAQ)

Q: Can IRF9Z24SPBF replace IRF9Z24NSTRR in existing designs?

A: IRF9Z24SPBF is electrically compatible as a substitute. Both are P-Channel MOSFETs with matching gate threshold voltage (4V @ 250µA) and gate charge (19 nC @ 10V). The primary difference is packaging format: IRF9Z24SPBF is supplied in Tube packaging versus the original Tape & Reel format. Electrical performance is equivalent within specified parameter ranges. IRF9Z24SPBF is an active product with ROHS3 compliance.

Q: What is the difference between IRF9Z24STRRPBF and IRF9Z24STRLPBF?

A: Both parts are identical Vishay Siliconix IRF9Z24 MOSFETs with 60V Vdss, 11A Id, and 280 mOhm Rds On. The suffix designations indicate internal manufacturing variations (STRR vs. STRL) that do not affect electrical specifications or package configuration. Both are supplied in Tape & Reel format and are ROHS3 compliant. Selection between these parts is based on inventory availability and supplier preference.

Q: Is FQB22P10TM a direct substitute or an upgrade?

A: FQB22P10TM is an enhanced substitute that exceeds IRF9Z24NSTRR specifications. It provides higher voltage rating (100V vs. 55V), doubled current capability (22A vs. 12A), and superior on-resistance (125 mOhm vs. 175 mOhm). The D2PAK package is mechanically compatible. FQB22P10TM is suitable for designs requiring performance headroom or when the original part specifications are insufficient for application requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. IRF9Z24SPBF, IRF9Z24STRLPBF, IRF9Z24STRRPBF, and FQB22P10TM are all ROHS3 compliant. The original IRF9Z24NSTRR is RoHS non-compliant. Substitution with any recommended part addresses RoHS regulatory requirements for new designs and production.

Q: What is the impact of higher gate charge in FQB22P10TM?

A: FQB22P10TM has gate charge of 50 nC @ 10V compared to 19 nC @ 10V in IRF9Z24NSTRR. Higher gate charge requires increased driver current or extended switching time. This parameter must be evaluated against driver circuit capabilities. For applications with adequate gate drive capability, this difference does not prevent substitution.

Q: Can these parts be used interchangeably in PCB layouts?

A: All substitute parts use D2PAK (TO-263-3) package configuration with identical pinout and footprint. PCB layouts designed for IRF9Z24NSTRR accommodate all recommended substitutes without modification. Packaging format differences (Tube vs. Tape & Reel) affect only component handling and assembly processes, not PCB integration.

Q: What inventory considerations apply to these substitutes?

A: IRF9Z24STRRPBF has the highest availability (8300 pcs), followed by IRF9Z24STRLPBF (5410 pcs) and FQB22P10TM (15226 pcs). IRF9Z24SPBF is available in Tube format (1389 pcs). Inventory levels support both prototype and production-volume requirements across all recommended substitutes.

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