FN258-100-35 Equivalent & Substitute Parts

Part Overview

The FN258-100-35 is a three-phase (Delta) EMC/EMI line filter rated for 100 A chassis mount applications with terminal block termination. This component is designed for inverters and power drive systems operating at DC ~ 60Hz frequencies. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. For new applications or ongoing procurement needs, equivalent substitute parts with active product status are available.

Substiute Parts

FN258-100-35

Schaffner EMC Inc.In Stock: 942FN258-100-35 Datasheet

Current PartRFQ

FN3288-100-35-C35-R65

Schaffner EMC Inc.In Stock: 1108FN3288-100-35-C35-R65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN258-100-35 is determined by the following critical parameters:

• Filter Type: Three Phase (Delta) configuration
• Current Rating: 100 A
• Mounting Type: Chassis Mount
• Termination Style: Terminal Block
• Configuration: Two Stage
• Frequency Range: DC ~ 60Hz
• Voltage Compatibility: Phase-to-phase and phase-to-ground ratings must support the application requirements

The FN3288-100-35-C35-R65 qualifies as a direct substitute based on matching filter type, current rating, mounting configuration, termination style, and frequency operating range. The substitute part features higher voltage ratings (530V phase-to-phase, 305V phase-to-ground) and an extended operating temperature range (-40°C ~ 100°C), making it suitable for applications previously served by the FN258-100-35.

Parameter Comparison

Engineering Selection Recommendations

The FN3288-100-35-C35-R65 is the designated substitute for the FN258-100-35. Selection of this substitute is based on:

• Identical current rating (100 A) and filter configuration (three-phase delta, two-stage)
• Matching mechanical interface (chassis mount, terminal block termination)
• Compatible frequency operating range (DC ~ 60Hz)
• Active product status, ensuring ongoing availability and support
• ROHS3 compliance maintained across both parts
• Higher voltage ratings provide operational margin for applications within the original 480V phase-to-phase specification

The substitute part's extended operating temperature range (-40°C vs. -25°C minimum) offers improved performance in cold environment applications.

Frequently Asked Questions (FAQ)

Q: Can the FN3288-100-35-C35-R65 directly replace the FN258-100-35 in existing designs?

A: Yes. Both parts share identical current ratings (100 A), filter type (three-phase delta), configuration (two-stage), mounting type (chassis mount), and termination style (terminal block). The substitute operates across the same frequency range (DC ~ 60Hz) and maintains ROHS3 compliance.

Q: What are the voltage differences between these parts?

A: The FN258-100-35 is rated 480V phase-to-phase and 277V phase-to-ground. The FN3288-100-35-C35-R65 is rated 530V phase-to-phase and 305V phase-to-ground. Applications operating at or below 480V phase-to-phase are fully compatible with the substitute part.

Q: Why is the FN258-100-35 marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status. The FN3288-100-35-C35-R65 is the active replacement for new applications and ongoing procurement.

Q: Are there packaging differences between these parts?

A: Both parts are supplied in tray packaging. No mechanical or dimensional incompatibilities exist for chassis mount installation.

Q: What is the operating temperature difference?

A: The FN258-100-35 operates from -25°C to 100°C. The FN3288-100-35-C35-R65 operates from -40°C to 100°C, providing a 15°C lower temperature limit for cold environment applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the FN258-100-35 and FN3288-100-35-C35-R65 are ROHS3 compliant.