FE2X03-5-2 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The FE2X03-5-2 is a 2-line common mode choke manufactured by Pulse Electronics, designed for through-hole mounting applications requiring 2.8A maximum current handling. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates across a temperature range of -40°C to 125°C with a maximum DC resistance of 66mOhm and 250V AC voltage rating.

Substiute Parts

FE2X03-5-2

Pulse ElectronicsIn Stock: 851FE2X03-5-2 Datasheet

Current PartRFQ

7446323004

Würth ElektronikIn Stock: 10897446323004 Datasheet

SimilarRFQ

B82734R2462B030

EPCOS - TDK ElectronicsIn Stock: 1609B82734R2462B030 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the FE2X03-5-2 is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Mounting Type: Must be through-hole
• Current Rating: Substitute must meet or exceed 2.8A
• DC Resistance: Substitute must not exceed 66mOhm
• Voltage Rating - AC: Must support 250V AC minimum
• Operating Temperature Range: Must support -40°C to 125°C
• Package Configuration: Vertical mounting with 4-pin pad/pin configuration

Two substitute parts meet these criteria: the Würth Elektronik 7446323004 and the EPCOS B82734R2462B030. Both are active products with superior current ratings and comparable or lower DC resistance values.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with full RoHS3 compliance, addressing the obsolescence of the FE2X03-5-2.

Würth Elektronik 7446323004: Meets all electrical parameters with 3A current rating and 70mOhm DCR. Maintains dimensional compatibility with the original part (26.50mm L x 18.50mm W x 30.50mm H). Classified as REACH Unaffected. Suitable for direct replacement in applications where current requirements do not exceed 3A.

EPCOS B82734R2462B030: Exceeds electrical specifications with 4.6A current rating and superior 46mOhm DCR. Larger footprint (32.50mm L x 21.00mm W x 31.00mm H) requires PCB layout verification. Includes additional approvals (ENEC, UR, VDE) and REACH Affected classification. Recommended for applications requiring enhanced current capacity and lower resistance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the FE2X03-5-2 be directly replaced with either substitute part?

A: Both substitute parts meet the core electrical requirements (2-line configuration, 250V AC rating, -40°C to 125°C operating range, through-hole mounting). The Würth Elektronik 7446323004 maintains closer dimensional compatibility. The EPCOS B82734R2462B030 requires PCB layout verification due to larger physical dimensions.

Q: What is the difference in DC resistance between the substitutes?

A: The Würth Elektronik 7446323004 has 70mOhm DCR (4mOhm higher than the original), while the EPCOS B82734R2462B030 has 46mOhm DCR (20mOhm lower than the original). Lower DCR reduces heat dissipation and power loss.

Q: Are both substitutes RoHS compliant?

A: Yes, both substitute parts are ROHS3 compliant. The original FE2X03-5-2 has undefined RoHS status due to its obsolete classification.

Q: Which substitute offers better current handling?

A: The EPCOS B82734R2462B030 provides 4.6A maximum current rating, compared to 3A for the Würth Elektronik part and 2.8A for the original. Selection depends on application current requirements.

Q: Do the substitutes have different package configurations?

A: Both substitutes use vertical 4-pin configurations. The Würth Elektronik part uses 4 PC Pin, while the EPCOS part also uses 4 PC Pin. The original uses 4 PC Pad. Physical dimensions differ, requiring PCB verification for the EPCOS option.