IRF7389 MOSFET N/P-Channel 30V Equivalent & Substitute Parts

Part Overview

The IRF7389 is an obsolete MOSFET array integrating N-channel and P-channel transistors in a single 8-SO surface mount package. Manufactured by Infineon Technologies under the HEXFET® series, this device operates at 30V drain-source voltage with 2.5W maximum power dissipation and logic level gate drive capability. Due to its obsolete product status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and system maintenance. Active alternatives with compatible electrical and mechanical specifications are available from Infineon and Rohm Semiconductor.

Substiute Parts

IRF7389

Infineon TechnologiesIn Stock: 50367IRF7389 Datasheet

Current PartRFQ

IRF7389TRPBF

Infineon TechnologiesIn Stock: 32849IRF7389TRPBF Datasheet

DirectRFQ

SP8M10FRATB

Rohm SemiconductorIn Stock: 2325SP8M10FRATB Datasheet

MFR RecommendedRFQ

SP8M10TB

Rohm SemiconductorIn Stock: 15385SP8M10TB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IRF7389 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Drain to Source Voltage (Vdss): Must equal 30V
• Configuration: Must be N and P-Channel
• FET Feature: Must include Logic Level Gate capability
• Package / Case: Must be 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Must be Surface Mount
• Technology: Must be MOSFET (Metal Oxide)

Acceptable Parameter Variations:

• Rds On (Max): Substitute values equal to or lower than 29 mOhm @ 5.8A, 10V are acceptable
• Gate Charge (Qg): Substitute values equal to or lower than 33 nC @ 10V are acceptable
• Input Capacitance (Ciss): Substitute values within ±20% of 650 pF @ 25V are acceptable
• Power - Max: Substitute values equal to or greater than 2.5W are acceptable
• Operating Temperature: Substitute range must encompass -55°C to 150°C minimum

Compliance Considerations:

• RoHS3 compliance is preferred for new designs but not mandatory for direct substitution
• Moisture Sensitivity Level (MSL) must be 1 (Unlimited) or equivalent
• REACH and ECCN classifications must remain consistent

Substitutes are grouped into two categories: direct manufacturer equivalents (same manufacturer, active product status) and cross-manufacturer alternatives (different manufacturer, active product status with verified electrical compatibility).

Parameter Comparison

Engineering Selection Recommendations

IRF7389TRPBF (Infineon Technologies)

The IRF7389TRPBF is the direct active equivalent of the obsolete IRF7389. This part maintains identical electrical specifications including Vdss (30V), Rds On (29 mOhm @ 5.8A, 10V), gate charge (33 nC @ 10V), and input capacitance (650 pF @ 25V). The primary distinction is product status: IRF7389TRPBF is active and ROHS3 compliant, whereas the original IRF7389 is obsolete and RoHS non-compliant. Packaging is identical (8-SOIC, 0.154", 3.90mm Width). This substitute is recommended for direct replacement in existing designs without circuit modification. Inventory availability is 32,800 pieces.

SP8M10FRATB (Rohm Semiconductor)

The SP8M10FRATB is a cross-manufacturer substitute from Rohm Semiconductor. It maintains Vdss equivalence (30V) and N/P-channel configuration with logic level gate drive. Key differences include lower Rds On values (25 mOhm @ 7A, 10V for N-channel), higher gate charge (8.4 nC @ 5V), and reduced input capacitance (600 pF @ 10V). This part includes automotive qualification (AEC-Q101) and 4V drive capability. Power dissipation is 2W (Ta), which is lower than the original 2.5W specification. This substitute is suitable for applications where automotive-grade components are required or where improved on-resistance performance is beneficial. Inventory availability is 2,247 pieces.

SP8M10TB (Rohm Semiconductor)

The SP8M10TB is a second cross-manufacturer substitute from Rohm Semiconductor. It provides equivalent Vdss (30V) and N/P-channel configuration with logic level gate drive. Electrical characteristics are similar to SP8M10FRATB with lower Rds On (25 mOhm @ 7A, 10V), reduced gate charge (8.4 nC @ 5V), and lower input capacitance (600 pF @ 10V). Power dissipation is 2W, below the original 2.5W specification. This part lacks automotive qualification but maintains ROHS3 compliance and identical package specifications. Inventory availability is 15,365 pieces.

Selection Criteria:

For direct replacement with no design changes: Select IRF7389TRPBF.

For automotive applications or improved performance: Select SP8M10FRATB.

For general industrial applications with improved performance: Select SP8M10TB.

All substitutes maintain 8-SOIC surface mount packaging, MSL 1 (Unlimited) moisture sensitivity, and operating temperature range compatibility.

Frequently Asked Questions (FAQ)

Q1: Can IRF7389TRPBF be used as a direct replacement for IRF7389 without circuit modification?

A: Yes. IRF7389TRPBF is electrically and mechanically identical to IRF7389. All critical parameters including Vdss (30V), Rds On (29 mOhm @ 5.8A, 10V), gate charge (33 nC @ 10V), and package (8-SOIC) are equivalent. The primary difference is product status: IRF7389TRPBF is active and ROHS3 compliant. No circuit redesign is required.

Q2: What are the key differences between Infineon IRF7389TRPBF and Rohm SP8M10FRATB?

A: Both parts maintain 30V Vdss and N/P-channel configuration. IRF7389TRPBF preserves the original IRF7389 electrical specifications exactly (29 mOhm Rds On, 33 nC gate charge, 650 pF input capacitance). SP8M10FRATB offers improved performance with lower Rds On (25 mOhm @ 7A, 10V) and includes automotive qualification (AEC-Q101). SP8M10FRATB has reduced power rating (2W vs. 2.5W) and different gate charge (8.4 nC @ 5V). Selection depends on whether exact electrical matching or improved performance is prioritized.

Q3: Are the Rohm SP8M10FRATB and SP8M10TB interchangeable?

A: Both parts share identical electrical specifications (30V Vdss, 25 mOhm Rds On @ 7A, 10V, 8.4 nC gate charge, 600 pF input capacitance) and package (8-SOIC). The primary difference is that SP8M10FRATB includes automotive qualification (AEC-Q101) and 4V drive capability, while SP8M10TB does not. For non-automotive applications, SP8M10TB is functionally equivalent. For automotive applications, SP8M10FRATB is required.

Q4: Can I use SP8M10FRATB or SP8M10TB in place of IRF7389 if my application requires lower on-resistance?

A: Yes, with circuit verification. Both Rohm parts offer lower Rds On (25 mOhm @ 7A, 10V) compared to IRF7389 (29 mOhm @ 5.8A, 10V). This improvement reduces power dissipation and heat generation. However, gate charge and input capacitance differ, which may affect switching speed and gate drive requirements. Circuit simulation or bench testing is necessary to confirm performance in your specific application.

Q5: What is the impact of different gate charge specifications on circuit design?

A: IRF7389 and IRF7389TRPBF specify 33 nC gate charge @ 10V. SP8M10FRATB and SP8M10TB specify 8.4 nC @ 5V. Lower gate charge reduces gate drive current requirements and switching losses. If your circuit uses a fixed gate drive current source, lower gate charge results in faster switching transitions. If your circuit uses a fixed gate drive voltage, the impact is minimal. Verify gate drive circuit compatibility before substitution.

Q6: Are all substitute parts RoHS compliant?

A: IRF7389TRPBF, SP8M10FRATB, and SP8M10TB are all ROHS3 compliant. The original IRF7389 is RoHS non-compliant. For new designs or applications requiring RoHS compliance, all three substitutes are acceptable. For legacy systems, RoHS compliance may not be a requirement.

Q7: What is the significance of AEC-Q101 qualification on SP8M10FRATB?

A: AEC-Q101 is the automotive electronics council qualification standard for discrete semiconductors. SP8M10FRATB meets this qualification, making it suitable for automotive applications requiring certified component reliability and quality assurance. SP8M10TB and IRF7389TRPBF do not carry AEC-Q101 qualification. For automotive designs, SP8M10FRATB is the appropriate choice.

Q8: Do all substitute parts use identical 8-SOIC packaging?

A: Yes. IRF7389, IRF7389TRPBF, SP8M10FRATB, and SP8M10TB all use 8-SOIC packaging (0.154", 3.90mm Width). PCB footprints and assembly processes are identical. No layout modifications are required when substituting between these parts.

Q9: What is the minimum operating temperature range for all substitutes?

A: IRF7389 and IRF7389TRPBF specify -55°C to 150°C (TJ). SP8M10FRATB and SP8M10TB specify 150°C maximum operating temperature without explicit minimum specification. For applications requiring -55°C operation, IRF7389TRPBF is the appropriate choice. For applications operating above 0°C, all substitutes are acceptable.

Q10: Which substitute part has the highest inventory availability?

A: SP8M10TB has the highest inventory with 15,365 pieces available. IRF7389TRPBF has 32,800 pieces available. SP8M10FRATB has 2,247 pieces available. For supply chain continuity, SP8M10TB or IRF7389TRPBF are recommended.