FN258HV-100-35 Equivalent & Substitute Parts

Part Overview

The FN258HV-100-35 is a three-phase delta EMC/EMI line filter rated for 100 A operation across DC to 60 Hz frequency range. This component is designed for chassis mount applications requiring two-stage filtering in inverters and power drive systems. The part carries a "Not For New Designs" status, making identification of suitable alternatives essential for ongoing system maintenance and new platform development. Equivalent and substitute parts must maintain compatibility across voltage ratings, current capacity, and filtering configuration while accommodating different mounting and termination requirements.

Substiute Parts

FN258HV-100-35

Schaffner EMC Inc.In Stock: 982FN258HV-100-35 Datasheet

Current PartRFQ

FN3359HV-150-28

Schaffner EMC Inc.In Stock: 1241FN3359HV-150-28 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FN258HV-100-35 is determined by the following critical parameters:

• Filter Type: Three Phase (Delta) configuration required
• Voltage Ratings: Phase to Ground/Neutral 400 V and Phase to Phase 690 V must be maintained
• Frequency Range: DC ~ 60 Hz operation capability
• Mounting Type: Chassis Mount requirement
• Operating Temperature Range: -25°C ~ 100°C compatibility
• Regulatory Compliance: CSA, ENEC, or UR certification

The FN3359HV-150-28 qualifies as a substitute despite differences in current rating, configuration stage count, and termination style. This part maintains identical voltage specifications, frequency range, mounting type, temperature range, and overlapping regulatory certifications. The higher current capacity (150 A versus 100 A) and three-stage configuration provide enhanced filtering performance suitable for applications previously served by the FN258HV-100-35.

Parameter Comparison

Engineering Selection Recommendations

The FN258HV-100-35 carries "Not For New Designs" status, indicating this component is obsolete for new platform development. The FN3359HV-150-28 is classified as Active and represents the current generation equivalent from Schaffner EMC Inc.

Both parts maintain identical voltage specifications (400 V phase-to-ground, 690 V phase-to-phase) and frequency range (DC ~ 60 Hz), ensuring electrical compatibility in existing system architectures. Both achieve ROHS3 compliance and REACH unaffected status.

The FN3359HV-150-28 provides 50% higher current capacity (150 A versus 100 A) and implements three-stage filtering versus two-stage, delivering superior EMC/EMI suppression. Termination differs: the substitute uses threaded post (M10) connections instead of terminal blocks, requiring mechanical interface adaptation during integration.

Regulatory certifications differ slightly: the original part holds CSA, ENEC, and UR approvals, while the substitute holds cURus and ENEC certifications. System designers must confirm that cURus and ENEC certifications satisfy application-specific regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can FN3359HV-150-28 directly replace FN258HV-100-35 in existing assemblies?

A: Electrical compatibility is confirmed across voltage and frequency specifications. Mechanical integration requires adaptation due to termination style differences: the original uses terminal blocks while the substitute uses M10 threaded posts. Physical space constraints and mounting geometry must be evaluated for each application.

Q: What is the significance of the current rating difference (100 A to 150 A)?

A: The substitute's higher current rating indicates it can handle greater load capacity. In applications operating at or below 100 A, the FN3359HV-150-28 operates within its rated envelope with margin. This does not create incompatibility; it represents enhanced capability.

Q: Does the three-stage versus two-stage configuration affect compatibility?

A: Both configurations maintain the same voltage ratings and frequency range. The three-stage design in the substitute provides additional filtering stages, resulting in improved EMC/EMI suppression performance. This represents an enhancement rather than a limitation for applications previously served by the two-stage design.

Q: Are the regulatory certifications equivalent?

A: The original part holds CSA, ENEC, and UR certifications. The substitute holds cURus and ENEC certifications. Both include ENEC approval. System designers must confirm that the specific certification set (particularly cURus versus CSA/UR) satisfies application requirements in target markets.

Q: What packaging considerations apply to substitution?

A: Both parts ship in tray packaging. Inventory availability differs: FN258HV-100-35 has 928 pieces in stock (legacy status), while FN3359HV-150-28 has 1157 pieces available (active product). Lead time and supply chain implications should be evaluated based on procurement timelines.