FN351-8-29 Equivalent & Substitute Parts

Part Overview

The FN351-8-29 is a three-phase delta EMC/EMI line filter rated for 8 A operation across DC to 60 Hz frequency range, designed for chassis mount applications with terminal block termination. This component is classified as obsolete, making identification of compatible alternatives essential for ongoing system maintenance and new design implementations. The FN351-8-29 serves applications including inverters and power drive systems where electromagnetic interference suppression is required.

Substiute Parts

FN351-8-29

Schaffner EMC Inc.In Stock: 1069FN351-8-29 Datasheet

Current PartRFQ

FN351H-8-29

Schaffner EMC Inc.In Stock: 946FN351H-8-29 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN351-8-29 is determined by the following critical parameters that must remain consistent or be enhanced:

• Filter Type & Configuration: Three Phase (Delta), Single Stage topology must be maintained
• Current Rating: 8 A minimum requirement
• Mounting & Termination: Chassis mount with terminal block interface
• Frequency Range: DC ~ 60 Hz operation capability
• Voltage Ratings: Phase-to-ground and phase-to-phase voltage specifications must meet or exceed the original ratings
• Operating Temperature: Extended range capability acceptable
• Regulatory Compliance: CSA, ENEC, UR certifications required
• RoHS Compliance: ROHS3 Compliant status maintained

The FN351H-8-29 qualifies as a direct substitute based on these parameters, with enhanced voltage ratings and extended temperature range.

Parameter Comparison

Engineering Selection Recommendations

The FN351H-8-29 is the designated substitute for the obsolete FN351-8-29. Both components maintain identical filter topology, current rating, frequency range, and regulatory certifications. The FN351H-8-29 provides enhanced voltage ratings (300 V phase-to-ground and 520 V phase-to-phase versus 250 V and 440 V respectively) and extended operating temperature range (-25°C to 100°C versus -25°C to 85°C). These enhancements ensure compatibility with the original application while providing improved performance margins. The FN351H-8-29 holds active product status with current manufacturing availability, making it the appropriate selection for replacement and new designs requiring three-phase delta EMC/EMI line filtration at 8 A.

Frequently Asked Questions (FAQ)

Q: Can the FN351H-8-29 directly replace the FN351-8-29 in existing designs?

A: Yes. Both components share identical filter type, configuration, current rating, frequency range, mounting method, and termination style. The FN351H-8-29 provides enhanced voltage ratings and temperature range, making it suitable for direct substitution.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), voltage ratings (FN351H-8-29 rated higher), operating temperature range (FN351H-8-29 extends to 100°C), and packaging (FN351-8-29 standard versus FN351H-8-29 in tray).

Q: Are both parts certified to the same standards?

A: Yes. Both the FN351-8-29 and FN351H-8-29 carry CSA, ENEC, and UR approvals and maintain ROHS3 compliance.

Q: Does the higher voltage rating of the FN351H-8-29 affect circuit compatibility?

A: No. Higher voltage ratings indicate enhanced capability and do not create compatibility issues when substituting into circuits designed for the original part's voltage specifications.

Q: What packaging options are available?

A: The FN351-8-29 is supplied in standard packaging, while the FN351H-8-29 is available in tray packaging for higher-volume applications.