IRFB7434GPBF N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRFB7434GPBF is an N-Channel MOSFET manufactured by Infineon Technologies, designed for high-current switching applications with a 40V drain-to-source voltage rating and 195A continuous drain current capability. The device features the HEXFET® and StrongIRFET™ technology series and is packaged in a TO-220-3 through-hole configuration.

The IRFB7434GPBF is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

IRFB7434GPBF

Infineon TechnologiesIn Stock: 772IRFB7434GPBF Datasheet

Current PartRFQ

IRFB7434PBF

Infineon TechnologiesIn Stock: 38424IRFB7434PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFB7434GPBF is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Drain to Source Voltage (Vdss): 40V
• Continuous Drain Current (Id) @ 25°C: 195A (Tc)
• On-State Resistance (Rds On) @ 100A, 10V: 1.6 mOhm maximum
• Gate Threshold Voltage (Vgs(th)) @ 250µA: 3.9V maximum
• Gate Charge (Qg) @ 10V: 324 nC maximum
• Maximum Gate Source Voltage (Vgs): ±20V
• Input Capacitance (Ciss) @ 25V: 10820 pF maximum

Mechanical Equivalence Criteria:

• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• Mounting Type: Through Hole
• Package / Case: TO-220-3

Compliance Criteria:

• RoHS3 Compliance
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts must match all electrical parameters, maintain identical mechanical form factor and mounting characteristics, and satisfy the same compliance requirements. Packaging format (tube versus other configurations) does not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The IRFB7434PBF is a direct functional equivalent to the IRFB7434GPBF. Both devices are manufactured by Infineon Technologies and share identical electrical specifications across all critical parameters: 40V Vdss rating, 195A continuous drain current, 1.6 mOhm on-state resistance, and matching gate charge characteristics.

Key Selection Factors:

Product Status: The IRFB7434GPBF is classified as obsolete, while the IRFB7434PBF maintains active product status. For new designs, ongoing production, or long-term supply requirements, the IRFB7434PBF is the appropriate selection.

Compliance and Certifications: Both parts satisfy ROHS3 compliance requirements and maintain MSL Level 1 (Unlimited) moisture sensitivity classification. Both are REACH Unaffected and classified under ECCN EAR99 and HTSUS 8541.29.0095.

Packaging and Availability: The IRFB7434PBF is supplied in tube packaging format with significantly higher inventory availability (38,400 pieces in stock versus 682 pieces for the obsolete variant). The TO-220-3 through-hole package remains identical, ensuring direct mechanical compatibility in existing PCB designs.

Thermal Performance: The IRFB7434PBF provides specified power dissipation (294W Tc) and operating temperature range (-55°C to 175°C Tj), offering complete thermal characterization for design validation.

Frequently Asked Questions (FAQ)

Q: Can the IRFB7434PBF be used as a direct replacement for the IRFB7434GPBF in existing designs?

A: Yes. The IRFB7434PBF is electrically and mechanically identical to the IRFB7434GPBF across all specified parameters. Both devices feature identical Vdss (40V), Id (195A), Rds On (1.6 mOhm), gate charge (324 nC), and TO-220-3 package configuration. No circuit modifications are required.

Q: What is the difference between IRFB7434GPBF and IRFB7434PBF?

A: The primary differences are product status and packaging format. The IRFB7434GPBF is obsolete, while the IRFB7434PBF is an active product. The IRFB7434PBF is supplied in tube packaging. Electrical and mechanical specifications are identical. The IRFB7434PBF also provides specified power dissipation (294W) and operating temperature range (-55°C to 175°C).

Q: Are there any compatibility concerns when substituting the IRFB7434PBF for the IRFB7434GPBF?

A: No compatibility concerns exist. Both parts are manufactured by Infineon Technologies, share the same HEXFET® and StrongIRFET™ series designation, maintain identical electrical characteristics, and use the same TO-220-3 through-hole package. Both satisfy ROHS3 compliance and MSL Level 1 requirements.

Q: Why should I choose the IRFB7434PBF over the IRFB7434GPBF?

A: The IRFB7434PBF is the recommended choice because it maintains active product status, ensuring long-term availability and supply chain continuity. The obsolete IRFB7434GPBF has limited remaining inventory (682 pieces). The IRFB7434PBF offers superior availability (38,400 pieces in stock) and provides complete thermal specifications for design validation.

Q: Do the parts require different PCB layouts or thermal management approaches?

A: No. Both parts use the TO-220-3 through-hole package and share identical electrical characteristics. PCB layouts, thermal management strategies, and mounting approaches remain unchanged. Thermal performance is equivalent based on identical power dissipation and on-state resistance specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the IRFB7434GPBF and IRFB7434PBF are ROHS3 Compliant and REACH Unaffected. Both maintain MSL Level 1 (Unlimited) moisture sensitivity classification.