FSEM311Z Equivalent & Substitute Parts

Part Overview

The FSEM311Z is a Linear Voltage Regulator IC Output module manufactured by onsemi, classified as a Power Management (PMIC) component. This part is currently listed with Obsolete product status. Due to its obsolescence, identifying functionally equivalent substitute components is essential for design continuity, procurement planning, and system reliability in applications requiring linear voltage regulation functionality.

Substiute Parts

FSEM311Z

onsemiIn Stock: 1338FSEM311Z Datasheet

Current PartRFQ

NCP1075AAP065G

onsemiIn Stock: 1218NCP1075AAP065G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute component NCP1075AAP065G is identified as the manufacturer-recommended alternative to the obsolete FSEM311Z. Substitution eligibility is determined by the following criteria:

Substitution Basis:

• Manufacturer recommendation (onsemi)
• Power Management (PMIC) category alignment
• Active product status ensuring long-term availability
• Compliance certifications (RoHS3, REACH Unaffected)

The NCP1075AAP065G operates as an offline switch flyback converter with integrated topology, providing isolated output and internal switching capability. While the FSEM311Z functions as a linear voltage regulator and the NCP1075AAP065G operates as a flyback converter, the manufacturer designation indicates functional equivalence for the intended application context.

Parameter Comparison

Engineering Selection Recommendations

For FSEM311Z Replacement:

The NCP1075AAP065G is the onsemi-designated substitute for the obsolete FSEM311Z. Selection of this component is supported by:

1. Product Status Transition: The NCP1075AAP065G maintains Active product status, ensuring availability, technical support, and continued manufacturing commitment from onsemi.

2. Compliance Certifications: The substitute part carries RoHS3 Compliant and REACH Unaffected designations, meeting current environmental and regulatory requirements.

3. Manufacturer Continuity: Both components originate from onsemi, ensuring design consistency and manufacturer-backed compatibility.

4. Package Specification: The NCP1075AAP065G is supplied in 8-DIP (0.300", 7.62mm) Through Hole configuration with 7 leads, providing standard PCB integration methodology.

Inventory Consideration: The NCP1075AAP065G maintains 1108 Pcs New Original In Stock, supporting immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Why is the FSEM311Z listed as Obsolete?

A: The FSEM311Z has reached end-of-life status within onsemi's product portfolio. Obsolete designation indicates the manufacturer no longer produces this component, making the NCP1075AAP065G the designated replacement for continued system support.

Q: What is the primary functional difference between FSEM311Z and NCP1075AAP065G?

A: The FSEM311Z operates as a Linear Voltage Regulator IC Output, while the NCP1075AAP065G functions as an Offline Switch Flyback Converter. Despite different topologies, onsemi identifies the NCP1075AAP065G as the functional equivalent for applications previously using the FSEM311Z.

Q: Is the NCP1075AAP065G package compatible with FSEM311Z PCB layouts?

A: The NCP1075AAP065G uses 8-DIP (0.300", 7.62mm) Through Hole packaging with 7 leads. PCB compatibility depends on the original FSEM311Z package specification, which is not provided in the available documentation. Pin configuration and footprint verification is required before PCB integration.

Q: What compliance certifications does the NCP1075AAP065G carry?

A: The NCP1075AAP065G is RoHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and distribution.

Q: What is the operating temperature range for the NCP1075AAP065G?

A: The NCP1075AAP065G operates across -40°C to 125°C junction temperature (TJ), supporting industrial and commercial temperature environments.

Q: Is the NCP1075AAP065G available in alternative packaging options?

A: The documented substitute is supplied in Tube packaging with 8-DIP Through Hole configuration. Alternative packaging availability should be verified directly with onsemi or authorized distributors.