IRF7233PBF Equivalent & Substitute Parts

Part Overview

The IRF7233PBF is a P-Channel MOSFET manufactured by Infineon Technologies, rated for 12V drain-to-source voltage with 9.5A continuous drain current at 25°C. This device is packaged in an 8-SOIC surface mount configuration and is part of the HEXFET® series. The IRF7233PBF is classified as obsolete, making identification of functionally equivalent substitute components essential for ongoing design support and production continuity. Substitute parts must maintain compatibility across key electrical parameters including voltage rating, current capacity, on-resistance characteristics, and thermal specifications while accommodating the 8-SOIC package standard.

Substiute Parts

IRF7233PBF

Infineon TechnologiesIn Stock: 1104IRF7233PBF Datasheet

Current PartRFQ

AO4453

Alpha & Omega Semiconductor Inc.In Stock: 12191AO4453 Datasheet

MFR RecommendedRFQ

FDS6375

onsemiIn Stock: 80400FDS6375 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IRF7233PBF is determined by strict adherence to the following criteria:

Primary Compatibility Requirements:

• FET Type: P-Channel topology
• Package: 8-SOIC surface mount configuration with 0.154" (3.90mm) width
• Drain-to-Source Voltage (Vdss): Minimum 12V rating
• Continuous Drain Current (Id): Minimum 9A at 25°C
• Power Dissipation: 2.5W or greater
• On-Resistance (Rds On): Not to exceed 24mOhm at rated current and gate voltage
• Operating Temperature: Support for -55°C to 150°C minimum range

Substitute parts identified:

AO4453 (Alpha & Omega Semiconductor Inc.) meets primary requirements with 12V Vdss, 9A continuous drain current, 19mOhm Rds On, and identical 8-SOIC packaging. Product status is Active with ROHS3 compliance.

FDS6375 (onsemi) exceeds primary voltage requirements at 20V Vdss, provides 8A continuous drain current, 24mOhm Rds On, and maintains 8-SOIC packaging. Product status is Active with ROHS3 compliance and extended operating temperature to 175°C.

Parameter Comparison

Engineering Selection Recommendations

AO4453 Selection Criteria:

The AO4453 provides direct electrical equivalence to the IRF7233PBF with matching 12V Vdss and comparable 9A continuous drain current. On-resistance of 19mOhm is superior to the IRF7233PBF specification of 20mOhm. The AO4453 maintains identical 8-SOIC packaging and operating temperature range of -55°C to 150°C. Product status is Active with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment. Gate charge is significantly lower at 18nC compared to 74nC, resulting in reduced switching losses. This part is recommended for direct replacement in applications where the original 12V rating and current capacity are sufficient.

FDS6375 Selection Criteria:

The FDS6375 provides enhanced voltage margin with 20V Vdss rating, exceeding the IRF7233PBF requirement of 12V. Continuous drain current of 8A is slightly lower than the IRF7233PBF at 9.5A but remains within acceptable substitution parameters for most applications. On-resistance of 24mOhm is within the allowable threshold. The FDS6375 maintains 8-SOIC packaging compatibility and extends operating temperature capability to 175°C, providing thermal headroom beyond the IRF7233PBF specification. Product status is Active with ROHS3 compliance. This part is recommended for applications requiring enhanced voltage derating or elevated temperature operation.

Compliance and Availability:

Both substitute parts carry REACH Unaffected status and EAR99 ECCN classification, matching the regulatory profile of the IRF7233PBF. Both are classified as Moisture Sensitivity Level 1 (Unlimited). AO4453 inventory is 12,100 pieces; FDS6375 inventory is 80,299 pieces, ensuring production continuity.

Frequently Asked Questions (FAQ)

Q: Can the AO4453 be used as a direct replacement for the IRF7233PBF?

A: Yes. The AO4453 maintains identical Vdss (12V), comparable continuous drain current (9A versus 9.5A), superior on-resistance (19mOhm versus 20mOhm), and identical 8-SOIC packaging. Operating temperature range and power dissipation specifications are equivalent. The primary difference is lower gate charge (18nC versus 74nC), which reduces switching losses.

Q: What is the key difference between the AO4453 and FDS6375?

A: The FDS6375 provides higher voltage rating (20V versus 12V Vdss) and extended operating temperature to 175°C. Continuous drain current is slightly lower (8A versus 9A). On-resistance is marginally higher (24mOhm versus 19mOhm). Selection depends on whether the application requires voltage derating margin or elevated temperature operation.

Q: Are both substitute parts available in the same packaging as the IRF7233PBF?

A: Yes. Both AO4453 and FDS6375 are supplied in 8-SOIC (0.154", 3.90mm Width) surface mount packages, identical to the IRF7233PBF. Pinout compatibility is maintained for direct PCB substitution.

Q: What is the significance of the lower gate charge in the AO4453?

A: Gate charge of 18nC in the AO4453 compared to 74nC in the IRF7233PBF results in reduced switching losses and lower gate drive power requirements. This improves overall circuit efficiency and reduces thermal stress on gate drive circuitry.

Q: Why does the FDS6375 have a higher Vdss rating than required?

A: The 20V Vdss rating of the FDS6375 provides voltage derating margin for applications subject to transient overvoltage or supply voltage variations. This enhances reliability without compromising performance in 12V nominal applications.

Q: Are there compliance or regulatory differences between the substitute parts?

A: No. Both AO4453 and FDS6375 carry identical REACH Unaffected status, EAR99 ECCN classification, and Moisture Sensitivity Level 1 (Unlimited) ratings. Both are ROHS3 compliant, exceeding the regulatory profile of the obsolete IRF7233PBF.

Q: What is the impact of different Vgs (Max) ratings?

A: The IRF7233PBF specifies ±12V Vgs (Max), while both substitutes specify ±8V. Applications must ensure gate drive voltage does not exceed ±8V when using AO4453 or FDS6375. Most standard gate drive circuits operate within ±5V to ±10V, making this compatible with typical designs.

Q: Can the FDS6375 be used in applications requiring 9.5A continuous current?

A: The FDS6375 is rated for 8A continuous drain current, which is 0.5A below the IRF7233PBF specification. Applications requiring sustained 9.5A operation should use the AO4453 (9A rating) or verify that actual operating current remains below 8A with appropriate thermal analysis.