FN258-7-29 Equivalent & Substitute Parts

Part Overview

The FN258-7-29 is a three-phase delta EMC/EMI line filter rated for 7 A with chassis mount configuration and terminal block termination. This component is designed for inverters and power drive systems operating at DC ~ 60Hz frequencies. The part carries a "Not For New Designs" status, making identification of suitable alternatives essential for ongoing system development and maintenance applications.

Substiute Parts

FN258-7-29

Schaffner EMC Inc.In Stock: 1059FN258-7-29 Datasheet

Current PartRFQ

FN3288-10-44-C34-R65

Schaffner EMC Inc.In Stock: 1059FN3288-10-44-C34-R65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The FN3288-10-44-C34-R65 qualifies as a substitute based on the following alignment of critical parameters:

Filter topology and configuration remain identical: both are three-phase delta EMC/EMI line filters with two-stage configuration. Both employ terminal block termination and chassis mount design, ensuring mechanical and electrical interface compatibility within the specified application domains of inverters and power drive systems.

Operating frequency range matches across both parts at DC ~ 60Hz. Both components maintain ROHS3 compliance and identical REACH and ECCN classifications, satisfying regulatory requirements.

The substitute part operates across an extended temperature range (-40°C ~ 100°C versus -25°C ~ 100°C), providing broader environmental tolerance. Current and voltage ratings differ: the substitute is rated for 10 A versus 7 A, and operates at 305 V phase-to-ground and 530 V phase-to-phase versus 277 V and 480 V respectively. These higher ratings establish the substitute as capable of handling the original part's electrical specifications while providing additional capacity margin.

Parameter Comparison

Engineering Selection Recommendations

The FN3288-10-44-C34-R65 represents an active product alternative to the FN258-7-29, which carries obsolescence designation. Selection of the substitute part is supported by identical filter topology, configuration, and termination architecture. Both components satisfy the same application requirements for inverters and power drive systems.

The substitute part maintains all required regulatory certifications and compliance standards. Its higher current and voltage ratings establish operational headroom relative to the original specification, while the extended operating temperature range (-40°C minimum versus -25°C) provides enhanced environmental tolerance for demanding installations.

Mechanical compatibility is assured through identical mounting type and termination style. The substitute part's active product status ensures continued availability and supply chain stability compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can FN3288-10-44-C34-R65 directly replace FN258-7-29 in existing designs?

A: Yes. Both parts share identical three-phase delta filter topology, two-stage configuration, terminal block termination, and chassis mount design. Mechanical and electrical interfaces are compatible. The substitute part's higher current and voltage ratings exceed the original specification requirements.

Q: What are the key differences between these parts?

A: Current rating increases from 7 A to 10 A. Voltage ratings increase from 277 V / 480 V to 305 V / 530 V phase-to-ground and phase-to-phase respectively. Operating temperature range extends from -25°C ~ 100°C to -40°C ~ 100°C. The substitute part maintains active product status versus the original's obsolescence designation.

Q: Are packaging differences significant?

A: The original part ships in Tray packaging while the substitute uses Box packaging. This affects logistics and storage but does not impact functional performance or electrical characteristics.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications. The original part holds CSA, ENEC, and UR approvals; substitute part compliance certifications are not specified in available data.

Q: Is the higher current rating of the substitute part a concern?

A: No. Higher current rating indicates greater capacity margin. The substitute part operates safely at the original part's 7 A specification while providing additional headroom for system design flexibility.