FN256-16-46 Equivalent & Substitute Parts

Part Overview

The FN256-16-46 is a three-phase (Wye) EMC/EMI line filter rated for 16 A with chassis mount configuration and terminal block termination. This component is classified as obsolete, necessitating identification of active equivalent models to maintain system continuity and ensure ongoing component availability for new designs and field replacements.

Substiute Parts

FN256-16-46

Schaffner EMC Inc.In Stock: 2335FN256-16-46 Datasheet

Current PartRFQ

FN3256H-16-29

Schaffner EMC Inc.In Stock: 1172FN3256H-16-29 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN256-16-46 is determined by the following critical parameters:

• Filter Type: Three Phase (Wye) configuration
• Current Rating: 16 A
• Voltage Compatibility: Phase to ground/neutral and phase to phase ratings
• Frequency Range: DC ~ 60Hz operation
• Mounting and Termination: Chassis mount with terminal block interface
• Operating Temperature Range: -25°C ~ 100°C
• Regulatory Compliance: CSA, ENEC, UR certifications

The FN3256H-16-29 meets all substitution criteria as an active product from the same manufacturer with identical filter type, current rating, frequency range, mounting configuration, and termination style. Voltage ratings are enhanced in the substitute part, providing compatibility with the original specification.

Parameter Comparison

Engineering Selection Recommendations

The FN3256H-16-29 is the direct equivalent for the obsolete FN256-16-46. Selection is based on:

• Product Status: FN3256H-16-29 is active and currently manufactured, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: Both parts maintain CSA, ENEC, and UR certifications. The substitute achieves ROHS3 compliance, meeting current environmental standards.
• Electrical Specifications: The substitute part maintains identical current rating, frequency range, and mounting configuration. Enhanced voltage ratings (300 V phase to ground/neutral and 520 V phase to phase) provide margin above the original 277 V and 480 V specifications.
• Physical Interface: Identical chassis mount and terminal block termination ensure direct mechanical and electrical integration without redesign.

Frequently Asked Questions (FAQ)

Q: Can FN3256H-16-29 directly replace FN256-16-46 in existing applications?

A: Yes. Both parts are three-phase (Wye) EMC/EMI line filters with 16 A current rating, identical mounting and termination, and matching frequency range. The substitute has higher voltage ratings, which are compatible with the original specification.

Q: What is the primary reason for substitution?

A: The FN256-16-46 is obsolete. The FN3256H-16-29 is an active product from the same manufacturer with equivalent electrical and mechanical specifications.

Q: Are there differences in packaging between these parts?

A: The FN256-16-46 packaging is listed as standard, while FN3256H-16-29 is supplied in Tray packaging. This does not affect functional compatibility.

Q: Do both parts meet the same regulatory requirements?

A: Both parts are certified by CSA, ENEC, and UR. The substitute achieves ROHS3 compliance, which exceeds the RoHS compliance of the original part.

Q: Are the voltage ratings of FN3256H-16-29 suitable for 480 VAC three-phase systems?

A: Yes. The substitute is rated for 520 V phase to phase, which exceeds the 480 V requirement of the original specification.