IR1168SPBF Equivalent & Substitute Parts

Part Overview

The IR1168SPBF is a secondary-side controller IC for power supply applications, specifically designed for synchronous rectifier control in 8-SOIC packaging. Manufactured by Infineon Technologies, this component has been discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

IR1168SPBF

Infineon TechnologiesIn Stock: 1742IR1168SPBF Datasheet

Current PartRFQ

ISL2111ABZ

Renesas Electronics CorporationIn Stock: 1360ISL2111ABZ Datasheet

MFR RecommendedRFQ

MP18021HN-A-LF-Z

Monolithic Power Systems Inc.In Stock: 26470MP18021HN-A-LF-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IR1168SPBF are identified based on the following critical parameters that determine functional equivalence:

• Package Compatibility: 8-SOIC form factor with 0.154" (3.90mm) width for direct PCB footprint compatibility
• Supply Voltage Range: Operating range encompassing or overlapping the 8.6V ~ 18V specification
• Functional Category: Half-bridge gate driver or secondary-side controller IC for power management applications
• Mounting Type: Surface mount technology
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The identified substitutes (ISL2111ABZ and MP18021HN-A-LF-Z) share the same 8-SOIC package footprint and operate within compatible voltage ranges, enabling direct replacement in secondary-side control and gate driver applications.

Parameter Comparison

Engineering Selection Recommendations

ISL2111ABZ (Renesas Electronics Corporation): This substitute is actively manufactured and maintains ROHS3 compliance. The supply voltage range of 8V ~ 14V overlaps the lower portion of the IR1168SPBF specification. The MSL rating of 1 (Unlimited) provides superior moisture protection compared to the original part. This option is suitable for applications where the supply voltage does not exceed 14V.

MP18021HN-A-LF-Z (Monolithic Power Systems Inc.): This substitute covers the full supply voltage range of 9V ~ 18V, matching the upper specification limit of the original IR1168SPBF. Active product status and ROHS3 compliance are confirmed. The exposed pad variant provides enhanced thermal performance. This option is suitable for applications requiring the complete voltage range specification.

Both substitutes are actively produced and available in high inventory quantities, ensuring supply chain continuity for new designs and production requirements.

Frequently Asked Questions (FAQ)

Q: Can IR1168SPBF be directly replaced with ISL2111ABZ or MP18021HN-A-LF-Z?

A: Both substitutes share the identical 8-SOIC package footprint, enabling direct PCB placement compatibility. However, functional equivalence depends on application-specific voltage and current requirements. Verify that the substitute's supply voltage range encompasses your circuit's operating conditions.

Q: What is the primary difference between the two substitute options?

A: The ISL2111ABZ operates within 8V ~ 14V, while the MP18021HN-A-LF-Z extends to 18V. Select MP18021HN-A-LF-Z for applications requiring the full upper voltage range of the original IR1168SPBF specification.

Q: Are both substitutes RoHS compliant?

A: Yes, both ISL2111ABZ and MP18021HN-A-LF-Z are ROHS3 compliant and REACH unaffected, matching the regulatory status of the IR1168SPBF.

Q: What does the exposed pad on MP18021HN-A-LF-Z provide?

A: The exposed pad variant improves thermal dissipation, beneficial for applications with elevated power dissipation or thermal constraints.

Q: How do moisture sensitivity levels compare?

A: ISL2111ABZ has MSL 1 (Unlimited storage), providing superior moisture protection. MP18021HN-A-LF-Z has MSL 2A (4 weeks), comparable to the original IR1168SPBF MSL 2 (1 year). Select based on storage and handling requirements.