FN409-3-02 Equivalent & Substitute Parts

Part Overview

The FN409-3-02 is a single phase EMC/EMI line filter manufactured by Schaffner EMC Inc., rated for 75VAC at 3A with two-stage configuration and through-hole PC pin termination. This component is designed for general purpose applications requiring electromagnetic compatibility filtering in AC power circuits. The part maintains active product status with full ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified based on matching functional categories, electrical ratings within acceptable tolerance ranges, and equivalent mechanical mounting characteristics.

Substiute Parts

FN409-3-02

Schaffner EMC Inc.In Stock: 2791FN409-3-02 Datasheet

Current PartRFQ

FLTR100V10Z

OmniOn PowerIn Stock: 3335FLTR100V10Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FN409-3-02 are identified based on the following critical parameters that determine functional equivalence:

Filter category and type (single phase EMC/EMI line filter), configuration topology (two-stage design), mounting method (through-hole), and termination style (PC pins). The FLTR100V10Z from OmniOn Power shares these core functional characteristics.

Electrical parameter compatibility is evaluated within the following constraints: voltage rating must support the application voltage (75V), current rating must meet or exceed the circuit requirement (3A minimum), and operating temperature range must encompass the intended application environment (-40°C to 100°C). The FLTR100V10Z operates at 75V DC with 10A capacity, providing current headroom above the 3A requirement while maintaining the same temperature operating window.

Compliance and certification status must be equivalent or superior. Both parts maintain ROHS3 compliance, unlimited MSL rating, and REACH unaffected status, ensuring regulatory compatibility across manufacturing and deployment environments.

Parameter Comparison

Engineering Selection Recommendations

Selection between FN409-3-02 and FLTR100V10Z must be based on the specific voltage requirement of the application circuit. The FN409-3-02 is specified for 75VAC operation, while the FLTR100V10Z is rated for 75VDC operation. These voltage types are not interchangeable; the appropriate part must match the actual circuit voltage type.

Both parts maintain active product status and equivalent compliance certifications (ROHS3, REACH unaffected, unlimited MSL). The FLTR100V10Z provides higher current capacity (10A versus 3A), which presents no functional limitation when substituting into a 3A circuit requirement. Through-hole mounting and PC pin termination are identical across both parts, ensuring mechanical and electrical interface compatibility.

Approval agencies differ between manufacturers: FN409-3-02 carries SEMKO and UR approvals, while FLTR100V10Z carries CE, CSA, UL, and VDE approvals. Application requirements may necessitate specific certification compliance.

Frequently Asked Questions (FAQ)

Q: Can FLTR100V10Z directly replace FN409-3-02 in any application?

A: Direct substitution requires voltage type compatibility. The FN409-3-02 operates on 75VAC while FLTR100V10Z operates on 75VDC. The substitute is only valid if the application circuit uses DC voltage. Mechanical mounting (through-hole) and termination (PC pins) are compatible.

Q: Why does FLTR100V10Z have a higher current rating (10A vs 3A)?

A: Higher current capacity in a substitute part does not prevent its use in lower-current applications. The 10A rating of FLTR100V10Z provides design margin and does not create incompatibility with a 3A circuit requirement.

Q: Are the certifications equivalent between these parts?

A: Both parts maintain ROHS3 compliance and REACH unaffected status. However, approval agencies differ: FN409-3-02 holds SEMKO and UR certifications, while FLTR100V10Z holds CE, CSA, UL, and VDE certifications. Application requirements may mandate specific certifications.

Q: What is the significance of the two-stage configuration?

A: Two-stage configuration indicates the filter topology and EMI suppression architecture. Both parts share this configuration, ensuring equivalent filtering performance characteristics for their respective voltage ratings.

Q: Does packaging type affect substitution compatibility?

A: Packaging (Tray for FN409-3-02, Box for FLTR100V10Z) affects storage, handling, and logistics but does not impact electrical or mechanical compatibility for component-level substitution.

Q: What does MSL 1 (Unlimited) mean for substitution?

A: Moisture Sensitivity Level 1 with unlimited rating indicates both parts have minimal moisture sensitivity and do not require special moisture control during storage or handling, making them equivalent in this regard.