FN5045-38-33 Equivalent & Substitute Parts

Part Overview

The FN5045-38-33 is a three-phase (delta) EMC/EMI line filter rated for 38 A AC operation with chassis mount configuration and terminal block termination. This component is designed for regenerative motor drive applications requiring single-stage filtering. The part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations.

Substiute Parts

FN5045-38-33

Schaffner EMC Inc.In Stock: 1060FN5045-38-33 Datasheet

Current PartRFQ

FN5420-38-33-E2FXT

Schaffner EMC Inc.In Stock: 1069FN5420-38-33-E2FXT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN5045-38-33 is based on the following critical parameters that must remain consistent:

• Filter Type: Three Phase (Delta) configuration
• Current Rating: 38 A minimum
• Mounting Type: Chassis Mount
• Termination Style: Terminal Block
• Configuration: Single Stage filtering
• Application Compatibility: Regenerative Motor Drive

The FN5420-38-33-E2FXT qualifies as a direct substitute based on matching all core electrical and mechanical parameters while offering enhanced operational specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The FN5420-38-33-E2FXT is the manufacturer-recommended substitute for the obsolete FN5045-38-33. Both components maintain identical core specifications for three-phase delta filtering at 38 A with chassis mount and terminal block configuration, ensuring mechanical and electrical compatibility in regenerative motor drive applications.

The FN5420-38-33-E2FXT offers extended operational advantages including expanded temperature range (-40°C vs. -25°C minimum), defined frequency operating range (DC ~ 60 Hz), and specified voltage ratings (480 V phase-to-ground, 530 V phase-to-phase). The substitute maintains active product status with broader regulatory approvals (CE, cURus, UKCA) compared to the obsolete original part.

The inductance value of the substitute (1.16 mH) differs from the original (1.6 mH). This parameter variation must be evaluated within the context of the specific application circuit to ensure filtering performance remains acceptable.

Frequently Asked Questions (FAQ)

Q: Can the FN5420-38-33-E2FXT be used as a direct replacement for FN5045-38-33 in existing designs?

A: Yes, the FN5420-38-33-E2FXT maintains identical current rating (38 A), filter type (three-phase delta), mounting configuration (chassis mount), and termination style (terminal block). The substitute is mechanically and electrically compatible for regenerative motor drive applications. The inductance difference (1.16 mH vs. 1.6 mH) should be evaluated for circuit-specific filtering requirements.

Q: What is the significance of the extended temperature range in the substitute part?

A: The FN5420-38-33-E2FXT operates from -40°C to 70°C compared to the original -25°C to 70°C range. This extended lower temperature capability provides operational flexibility in environments with lower ambient conditions.

Q: Why does the substitute part specify voltage ratings while the original does not?

A: The FN5420-38-33-E2FXT includes defined voltage specifications (480 V phase-to-ground, 530 V phase-to-phase) that establish the electrical operating envelope. These specifications were not documented for the obsolete FN5045-38-33.

Q: Are there regulatory compliance differences between the two parts?

A: The FN5420-38-33-E2FXT carries CE, cURus, and UKCA approvals, while the original FN5045-38-33 carried only cURus approval. The expanded regulatory certifications reflect current market requirements and provide broader geographic compliance coverage.

Q: How does the inductance difference affect component selection?

A: The substitute part has lower inductance (1.16 mH vs. 1.6 mH). This affects the filtering characteristics and frequency response of the EMC/EMI filter. Circuit-level analysis is required to confirm that the substitute's filtering performance meets application requirements.