FN258-30-07 Equivalent & Substitute Parts

Part Overview

The FN258-30-07 is a three-phase (Delta) EMC/EMI line filter rated for 30 A chassis mount applications with a two-stage configuration and 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 The part is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product portfolio. Identifying equivalent substitute parts is necessary for applications requiring continued support, legacy system maintenance, or when the original part becomes unavailable.

Substiute Parts

FN258-30-07

Schaffner EMC Inc.In Stock: 1227FN258-30-07 Datasheet

Current PartRFQ

FN3288-25-33-C35-R65

Schaffner EMC Inc.In Stock: 996FN3288-25-33-C35-R65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FN258-30-07 is determined by the following critical parameters:

Filter topology must remain three-phase (Delta) configuration to maintain electrical compatibility with the source system. The two-stage filtering architecture is a core functional requirement for EMC/EMI suppression performance. Chassis mount with terminal block termination ensures mechanical and electrical interface compatibility. Operating frequency range (DC ~ 60Hz) must be maintained or exceeded. Voltage ratings must meet or exceed the phase-to-ground (277 V minimum) and phase-to-phase (480 V minimum) requirements of the original application. Current rating must be sufficient for the application load; lower current ratings may be acceptable if the application current does not exceed the substitute part's rating. Operating temperature range should maintain or extend the original specification. RoHS3 compliance and regulatory certifications (CSA, ENEC, UR) ensure continued compliance with applicable standards.

The FN3288-25-33-C35-R65 qualifies as a substitute based on matching filter type, configuration, mounting style, termination method, and frequency range. However, the current rating is reduced from 30 A to 25 A, and voltage ratings are different (305 V phase-to-ground, 530 V phase-to-phase). This substitute is suitable only for applications where the actual current draw does not exceed 25 A and the voltage requirements align with the substitute's ratings.

Parameter Comparison

Engineering Selection Recommendations

The FN3288-25-33-C35-R65 is an active product from Schaffner EMC Inc., whereas the FN258-30-07 is classified as Not For New Designs. Both parts maintain ROHS3 compliance and equivalent regulatory certifications (CSA, ENEC, UR). The substitute part extends the operating temperature range to -40°C, providing improved performance in cold environments.

Selection of the FN3288-25-33-C35-R65 as a substitute requires verification that the application current does not exceed 25 A and that the voltage requirements (305 V phase-to-ground, 530 V phase-to-phase) are compatible with the system design. The higher voltage ratings of the substitute provide margin for applications operating at or near the original part's voltage specifications. Both parts share identical frequency operating ranges and filtering architecture, ensuring functional equivalence in EMC/EMI suppression performance.

Frequently Asked Questions (FAQ)

Q: Can the FN3288-25-33-C35-R65 directly replace the FN258-30-07 in all applications?

A: Direct replacement is possible only if the application current does not exceed 25 A and the system voltage requirements align with 305 V phase-to-ground and 530 V phase-to-phase ratings. The substitute part's lower current rating is the primary limiting factor for compatibility.

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

A: The main differences are current rating (30 A vs. 25 A), voltage specifications (277 V/480 V vs. 305 V/530 V), operating temperature range (-25°C ~ 100°C vs. -40°C ~ 100°C), and product status (Not For New Designs vs. Active). All other functional parameters—filter type, configuration, mounting, termination, and frequency range—are identical.

Q: Why is the FN258-30-07 marked as Not For New Designs?

A: This designation indicates the part has been superseded in the manufacturer's product line. The FN3288-25-33-C35-R65 represents the active alternative for new applications requiring three-phase delta EMC/EMI line filtering in this power range.

Q: Are both parts packaged identically?

A: Both parts are supplied in Tray packaging, ensuring consistent handling and storage requirements.

Q: Do both parts meet the same regulatory standards?

A: Yes, both parts are ROHS3 compliant and carry equivalent approval agency certifications (CSA, ENEC, UR), ensuring compliance with applicable electromagnetic compatibility and safety standards.