FN258P-42-33 Equivalent & Substitute Parts

Part Overview

The FN258P-42-33 is a three-phase (Delta) EMC/EMI line filter rated for 42 A with a two-stage configuration and chassis mount 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 The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product portfolio.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

FN258P-42-33

Schaffner EMC Inc.In Stock: 1150FN258P-42-33 Datasheet

Current PartRFQ

FN3288-40-33-C35-R65

Schaffner EMC Inc.In Stock: 802FN3288-40-33-C35-R65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FN258P-42-33 is determined by the following critical parameters:

• Filter Type: Three Phase (Delta) configuration
• Configuration: Two Stage topology
• Current Rating: 42 A nominal capacity
• Voltage Rating: Phase-to-ground 277 V and phase-to-phase 480 V
• Frequency Range: DC ~ 60Hz operation
• Mounting Type: Chassis Mount
• Termination Style: Terminal Block
• Operating Temperature Range: Minimum -25°C, maximum 100°C

The substitute part FN3288-40-33-C35-R65 maintains compatibility across filter type, configuration, mounting, and termination parameters. Current rating variance (40 A vs. 42 A) and voltage rating differences (305 V / 530 V vs. 277 V / 480 V) represent the primary technical distinctions requiring engineering evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

The FN3288-40-33-C35-R65 is the identified substitute for the FN258P-42-33. Both parts are manufactured by Schaffner EMC Inc. and maintain identical filter topology, configuration, mounting, and termination characteristics.

The FN3288-40-33-C35-R65 carries Active product status, whereas the FN258P-42-33 is designated Not For New Designs. This status difference indicates the FN3288 series represents the current generation offering from the manufacturer.

Both parts maintain ROHS3 compliance and REACH Unaffected status. The FN3288-40-33-C35-R65 provides an extended operating temperature range (-40°C ~ 100°C versus -25°C ~ 100°C), offering broader environmental tolerance.

Current rating differential (40 A versus 42 A) and voltage rating variance (305 V / 530 V versus 277 V / 480 V) must be evaluated against specific application requirements to confirm substitution suitability.

Frequently Asked Questions (FAQ)

Q: Can the FN3288-40-33-C35-R65 directly replace the FN258P-42-33?

A: Both parts share identical filter type (three-phase delta), configuration (two-stage), mounting type (chassis mount), and termination style (terminal block). Current rating and voltage ratings differ and must be evaluated against application specifications.

Q: What is the significance of the current rating difference (42 A vs. 40 A)?

A: The FN258P-42-33 is rated for 42 A while the FN3288-40-33-C35-R65 is rated for 40 A. Application current requirements must not exceed the substitute part's 40 A rating.

Q: How do the voltage ratings compare?

A: The FN258P-42-33 is rated for 277 V phase-to-ground and 480 V phase-to-phase. The FN3288-40-33-C35-R65 is rated for 305 V phase-to-ground and 530 V phase-to-phase. System voltage specifications must align with the selected component's voltage rating.

Q: What is the difference in operating temperature range?

A: The FN258P-42-33 operates from -25°C to 100°C. The FN3288-40-33-C35-R65 operates from -40°C to 100°C, providing extended low-temperature capability.

Q: Why is the FN258P-42-33 marked "Not For New Designs"?

A: This designation indicates the part has been superseded by newer offerings in the manufacturer's portfolio. The FN3288-40-33-C35-R65 represents the active generation product.

Q: Are both parts RoHS compliant?

A: Yes, both the FN258P-42-33 and FN3288-40-33-C35-R65 are ROHS3 compliant and REACH unaffected.

Q: What packaging is available for these parts?

A: Both parts are supplied in Tray packaging.