IRF9956PBF Equivalent & Substitute Parts

Part Overview

The IRF9956PBF is a dual N-channel MOSFET array manufactured by Infineon Technologies, designed for surface mount applications requiring 30V operation at 3.5A continuous drain current. This component integrates two N-channel MOSFETs in a single 8-SOIC package with logic level gate drive capability and a maximum power dissipation of 2W.

The IRF9956PBF has been discontinued at DiGi Electronics. Equivalent substitute parts are available from alternative manufacturers that maintain the same electrical specifications and package footprint, enabling direct replacement in existing designs without circuit modification.

Substiute Parts

IRF9956PBF

Infineon TechnologiesIn Stock: 28325IRF9956PBF Datasheet

Current PartRFQ

SP8K5TB

Rohm SemiconductorIn Stock: 7949SP8K5TB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF9956PBF is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Drain to Source Voltage (Vdss): 30V minimum
• Continuous Drain Current (Id): 3.5A minimum at 25°C
• Configuration: Dual N-channel MOSFET array
• Package Type: 8-SOIC surface mount with 0.154" (3.90mm) width
• Logic Level Gate Drive capability
• Maximum Power Dissipation: 2W minimum

Compliance Requirements:

• RoHS3 Compliant
• REACH Unaffected status
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute part SP8K5TB from Rohm Semiconductor meets all critical electrical parameters and maintains identical package footprint compatibility. Additional cross-reference parts (ZXMN3A06DN8TA, IRF9956TRPBF, SH8KA1GZETB) are listed as verified substitutes within the same functional category.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SP8K5TB (Rohm Semiconductor)

The SP8K5TB is the manufacturer-recommended substitute for the IRF9956PBF. Both components share identical electrical ratings (30V Vdss, 3.5A Id, 2W power dissipation) and package footprint (8-SOIC, 0.154" width), enabling direct PCB replacement without layout modification.

The SP8K5TB maintains active product status with current inventory availability (7,888 pcs), whereas the IRF9956PBF is discontinued. Both parts are RoHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited moisture sensitivity).

The SP8K5TB exhibits lower on-resistance (83 mOhm @ 3.5A, 10V versus 100 mOhm @ 2.2A, 10V), providing improved thermal performance in switching applications. This characteristic represents a functional enhancement rather than a deviation from the original specification.

Cross-Reference Alternatives:

Additional verified substitutes include ZXMN3A06DN8TA, IRF9956TRPBF, and SH8KA1GZETB. These parts maintain the same dual N-channel configuration, 30V/3.5A ratings, and 8-SOIC package compatibility. Selection among these alternatives should be based on supply chain availability and lead time requirements.

Compliance Verification:

All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original IRF9956PBF in existing applications.

Frequently Asked Questions (FAQ)

Q: Can the SP8K5TB replace the IRF9956PBF directly on the PCB?

A: Yes. The SP8K5TB is pin-compatible and footprint-compatible with the IRF9956PBF. Both components use the 8-SOIC package with 0.154" (3.90mm) width. No PCB layout modification is required.

Q: What are the key electrical differences between IRF9956PBF and SP8K5TB?

A: Both parts meet the same critical specifications: 30V Vdss, 3.5A continuous drain current, and 2W maximum power dissipation. The SP8K5TB has lower on-resistance (83 mOhm versus 100 mOhm), which improves efficiency in switching applications.

Q: Are there differences in gate drive requirements?

A: Both the IRF9956PBF and SP8K5TB feature logic level gate drive capability. Gate threshold voltage specifications differ slightly (1V @ 250µA for IRF9956PBF versus 2.5V @ 1mA for SP8K5TB), but both are compatible with standard logic level gate drivers.

Q: What is the operating temperature range for substitute parts?

A: The IRF9956PBF operates from -55°C to 150°C (TJ). The SP8K5TB specifies 150°C maximum junction temperature. For applications requiring the full -55°C lower limit, verify the substitute part's minimum operating temperature specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The SP8K5TB and all listed cross-reference parts (ZXMN3A06DN8TA, IRF9956TRPBF, SH8KA1GZETB) are RoHS3 compliant and REACH unaffected, matching the original IRF9956PBF compliance status.

Q: What is the moisture sensitivity level for substitute parts?

A: All substitute parts carry MSL Level 1 (Unlimited), identical to the IRF9956PBF. This classification indicates no moisture sensitivity restrictions for storage or handling.

Q: Can I use these substitutes in high-frequency switching applications?

A: Yes. Both the IRF9956PBF and SP8K5TB are suitable for logic level gate drive applications. Gate charge specifications are provided in the detailed datasheets. The SP8K5TB exhibits lower gate charge (3.5nC @ 5V versus 14nC @ 10V), which may reduce switching losses in high-frequency circuits.

Q: How do I verify package compatibility before ordering?

A: Confirm that your PCB footprint is designed for 8-SOIC (0.154", 3.90mm width) surface mount packages. Both the IRF9956PBF and SP8K5TB use this standard package, ensuring mechanical and electrical compatibility.