IRF9Z34STRL MOSFET P-Channel Equivalent & Substitute Parts

Part Overview

The IRF9Z34STRL is a P-Channel MOSFET manufactured by Vishay Siliconix, rated for 60V drain-to-source voltage with 18A continuous drain current in a surface mount TO-263 (D2PAK) package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement. Equivalent parts maintain identical or superior electrical and mechanical specifications, enabling direct replacement in existing circuit designs without modification.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	18	A (Tc)
Rds On (Max) @ Id, Vgs	140	mOhm @ 11A, 10V
Gate Threshold Voltage Vgs(th) (Max) @ Id	4	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	34	nC @ 10V
Input Capacitance (Ciss) (Max) @ Vds	1100	pF @ 25V
Power Dissipation (Max)	3.7 (Ta), 88 (Tc)	W
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	TO-263-3, D2PAK	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the IRF9Z34STRL is determined by equivalence in the following critical parameters:

Electrical Equivalence Criteria:

FET Type: P-Channel topology
Drain to Source Voltage (Vdss): Minimum 60V
Continuous Drain Current (Id): Minimum 18A at 25°C
Rds On (Max): Not exceeding 140 mOhm at specified gate voltage
Gate Threshold Voltage: Maximum 4V at 250µA
Operating Temperature Range: -55°C to 175°C minimum
Gate Charge and Input Capacitance: Within specified limits

Mechanical Equivalence Criteria:

Mounting Type: Surface Mount
Package: TO-263 (D2PAK) or equivalent footprint compatibility
Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitute parts are classified into two categories:

Parametric Equivalents: Parts with identical or superior electrical specifications and active product status, enabling direct replacement.

Manufacturer Recommended Alternatives: Parts from alternative manufacturers with comparable or enhanced performance characteristics, suitable for applications where cross-manufacturer qualification is acceptable.

Parameter Comparison

Parameter	IRF9Z34STRL	IRF9Z34STRLPBF	IRF9Z34STRRPBF	SIHF9Z34STRL-GE3	IRF9Z34NSTRLPBF	SPB18P06PGATMA1
Manufacturer	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix	Infineon Technologies	Infineon Technologies
FET Type	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel
Vdss (V)	60	60	60	60	55	60
Id @ 25°C (A)	18 (Tc)	18 (Tc)	18 (Tc)	18 (Tc)	19 (Tc)	18.7 (Ta)
Rds On (Max) (mOhm)	140 @ 11A, 10V	140 @ 11A, 10V	140 @ 11A, 10V	140 @ 11A, 10V	100 @ 10A, 10V	130 @ 13.2A, 10V
Vgs(th) (Max) (V)	4 @ 250µA	4 @ 250µA	4 @ 250µA	4 @ 250µA	4 @ 250µA	4 @ 1mA
Qg (Max) (nC)	34 @ 10V	34 @ 10V	34 @ 10V	34 @ 10V	35 @ 10V	28 @ 10V
Ciss (Max) (pF)	1100 @ 25V	1100 @ 25V	1100 @ 25V	1100 @ 25V	620 @ 25V	860 @ 25V
Power Dissipation (W)	3.7 (Ta), 88 (Tc)	3.7 (Ta), 88 (Tc)	3.7 (Ta), 88 (Tc)	3.7 (Ta), 88 (Tc)	3.8 (Ta), 68 (Tc)	81.1 (Ta)
Operating Temperature (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Package	TO-263 (D2PAK)	TO-263 (D2PAK)	TO-263 (D2PAK)	TO-263 (D2PAK)	D2PAK	PG-TO263-3
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Parametric Equivalents (Vishay Siliconix):

IRF9Z34STRLPBF and IRF9Z34STRRPBF are direct parametric equivalents of the IRF9Z34STRL, maintaining identical electrical specifications across all critical parameters. Both parts are manufactured by Vishay Siliconix and are classified as Active products with ROHS3 compliance. The primary distinction between these parts is packaging format: IRF9Z34STRLPBF is supplied in Tape & Reel (TR) format, while IRF9Z34STRRPBF is also supplied in Tape & Reel format. Both parts are suitable for direct substitution in applications currently using the obsolete IRF9Z34STRL.

SIHF9Z34STRL-GE3 is an additional parametric equivalent from Vishay Siliconix with identical electrical specifications and Active product status. This part is supplied in Tape & Reel format and maintains full compatibility with the original design.

Manufacturer Recommended Alternatives:

IRF9Z34NSTRLPBF (Infineon Technologies) is a cross-manufacturer alternative with enhanced performance characteristics. This part features a lower Rds On value of 100 mOhm (compared to 140 mOhm), reduced input capacitance of 620 pF (compared to 1100 pF), and slightly higher continuous drain current of 19A. The drain-to-source voltage is rated at 55V, which is 5V lower than the original specification. This part is suitable for applications where the 55V rating is acceptable and where reduced on-resistance and switching losses provide design benefits.

SPB18P06PGATMA1 (Infineon Technologies) is an alternative from the SIPMOS® series with 60V rating and 18.7A continuous drain current. This part features a lower Rds On value of 130 mOhm and reduced gate charge of 28 nC, offering improved switching performance. The input capacitance is 860 pF, intermediate between the original and the IRF9Z34NSTRLPBF. This part is supplied in Cut Tape and Digi-Reel® format.

All substitute parts maintain the required operating temperature range of -55°C to 175°C and MSL 1 rating. Selection between parametric equivalents should be based on packaging format requirements and supplier availability. Selection of manufacturer-recommended alternatives should account for the specific voltage and performance requirements of the application.

Frequently Asked Questions (FAQ)

Q: Can IRF9Z34STRLPBF be used as a direct replacement for IRF9Z34STRL?

A: Yes. IRF9Z34STRLPBF is a parametric equivalent with identical electrical specifications. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel). Electrical performance and pin configuration are identical, enabling direct substitution without circuit modification.

Q: What is the difference between IRF9Z34STRLPBF and IRF9Z34STRRPBF?

A: Both parts are parametric equivalents with identical electrical specifications. The difference lies in packaging and supplier designation. Both are supplied in Tape & Reel format and are suitable for direct substitution.

Q: Why is the IRF9Z34NSTRLPBF rated at 55V instead of 60V?

A: IRF9Z34NSTRLPBF is manufactured by Infineon Technologies and represents a different product line within the P-Channel MOSFET category. The 55V rating is a design characteristic of this alternative. For applications requiring 60V minimum rating, this part is suitable only if the actual circuit voltage does not exceed 55V.

Q: What are the advantages of SPB18P06PGATMA1 over the original IRF9Z34STRL?

A: SPB18P06PGATMA1 offers lower on-resistance (130 mOhm vs. 140 mOhm) and reduced gate charge (28 nC vs. 34 nC), resulting in lower conduction losses and faster switching characteristics. The 60V rating matches the original specification. These improvements are beneficial in high-frequency switching applications.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant. The original IRF9Z34STRL is RoHS non-compliant. If RoHS compliance is a design requirement, any of the listed substitute parts satisfy this requirement.

Q: Can these parts be used interchangeably in terms of PCB footprint?

A: All substitute parts use TO-263 (D2PAK) or equivalent package designations, maintaining identical PCB footprint compatibility. No layout modifications are required for substitution.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture control during storage or handling. All listed parts maintain this rating, ensuring consistent handling requirements across substitutions.

Q: Which substitute part should be selected for new designs?

A: For new designs, IRF9Z34STRLPBF, IRF9Z34STRRPBF, or SIHF9Z34STRL-GE3 are recommended as they maintain identical specifications to the original design. Selection should be based on supplier availability and packaging format preference. For applications where improved performance is desired, SPB18P06PGATMA1 offers enhanced switching characteristics with 60V rating.

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