IRF9956TR Equivalent & Substitute Parts

Part Overview

The IRF9956TR is a dual N-channel MOSFET array manufactured by Infineon Technologies, designed for surface mount applications requiring logic level gate control. This component features a 30V drain-to-source voltage rating with 3.5A continuous drain current capability and is housed in an 8-SOIC package. The IRF9956TR is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity. Equivalent parts must maintain identical electrical performance parameters and compatible package dimensions to ensure direct circuit board replacement without design modification.

Substiute Parts

IRF9956TR

Infineon TechnologiesIn Stock: 20330IRF9956TR Datasheet

Current PartRFQ

IRF9956TRPBF

Infineon TechnologiesIn Stock: 4733IRF9956TRPBF Datasheet

DirectRFQ

SP8K5TB

Rohm SemiconductorIn Stock: 7949SP8K5TB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IRF9956TR are classified based on strict electrical and mechanical parameter equivalence. The substitution logic is determined by the following critical parameters:

Primary Equivalence Criteria:

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

Substitution Categories:

Category 1: Direct Infineon Equivalents Parts maintaining identical manufacturer lineage, electrical specifications, and package designation. These parts differ only in packaging format (Tape & Reel versus Cut Tape) or RoHS compliance status.

Category 2: Cross-Manufacturer Equivalents Parts from alternative manufacturers (Rohm Semiconductor) that meet or exceed all electrical parameters and maintain compatible 8-SOIC package dimensions. These parts are evaluated based on parameter matching within the specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

IRF9956TRPBF Selection Criteria:

The IRF9956TRPBF is a direct Infineon equivalent to the IRF9956TR with identical electrical specifications and package configuration. The primary distinction is packaging format (Cut Tape versus Tape & Reel) and RoHS3 compliance status. Selection of IRF9956TRPBF is appropriate for applications requiring ROHS3 compliance certification while maintaining exact electrical parameter matching. This part is classified as obsolete, consistent with the primary part number.

SP8K5TB Selection Criteria:

The SP8K5TB is a cross-manufacturer equivalent manufactured by Rohm Semiconductor with active product status. This part meets all critical electrical parameters: 30V Vdss rating, 3.5A continuous drain current, and compatible 8-SOIC package dimensions. The SP8K5TB demonstrates improved on-state resistance performance (83mOhm versus 100mOhm) and reduced gate charge (3.5nC versus 14nC), indicating enhanced switching efficiency. RoHS3 compliance and active product status provide extended supply chain availability compared to obsolete Infineon alternatives. The SP8K5TB is suitable for new designs and production continuity where component availability is a primary concern.

Compliance Considerations:

Both substitute parts maintain REACH Unaffected status and MSL Level 1 (Unlimited) moisture sensitivity rating, consistent with the original IRF9956TR. RoHS3 compliance is available through both IRF9956TRPBF and SP8K5TB, addressing regulatory requirements for restricted substance elimination.

Frequently Asked Questions (FAQ)

Q: Can IRF9956TRPBF be used as a direct replacement for IRF9956TR in existing circuit boards?

A: Yes. IRF9956TRPBF maintains identical electrical specifications and 8-SOIC package dimensions. The only differences are packaging format (Cut Tape versus Tape & Reel) and RoHS3 compliance status. No circuit design modification is required.

Q: What are the key differences between IRF9956TR and SP8K5TB?

A: Both parts share identical Vdss (30V), Id (3.5A), power rating (2W), and 8-SOIC package dimensions. SP8K5TB offers lower on-state resistance (83mOhm versus 100mOhm) and reduced gate charge (3.5nC versus 14nC), resulting in improved switching performance. SP8K5TB has active product status versus obsolete status for IRF9956TR. Operating temperature range for SP8K5TB is specified to 150°C maximum, while IRF9956TR extends to -55°C minimum.

Q: Is the SP8K5TB package physically compatible with IRF9956TR circuit board layouts?

A: Yes. Both parts use 8-SOIC package format with 0.154" (3.90mm) width specification. Physical footprint and pin spacing are compatible for direct board-level substitution.

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

A: SP8K5TB is recommended for new designs based on active product status, ensuring long-term supply chain availability. Both IRF9956TRPBF and SP8K5TB provide RoHS3 compliance for regulatory requirements.

Q: Are there any gate drive voltage differences between these parts?

A: All three parts feature logic level gate operation. IRF9956TR and IRF9956TRPBF specify Vgs(th) of 1V @ 250µA. SP8K5TB specifies Vgs(th) of 2.5V @ 1mA. Both specifications support standard logic level gate drive circuits.

Q: What is the significance of the lower gate charge in SP8K5TB?

A: SP8K5TB gate charge of 3.5nC @ 5V versus 14nC @ 10V in IRF9956TR indicates reduced gate drive power requirements and faster switching transitions. This results in lower switching losses and improved thermal performance in high-frequency applications.

Q: Can these parts be intermixed in production inventory?

A: IRF9956TRPBF and SP8K5TB are electrically equivalent and physically compatible. Inventory intermixing is permissible provided that RoHS compliance documentation and traceability requirements are maintained separately for regulatory compliance verification.