Equivalent & Substitute Parts for Würth Elektronik 701014100

Part Overview

The Würth Elektronik 701014100 is a 1 µH shielded wirewound inductor rated for 50 A continuous current with 0.6 mOhm DC resistance, designed for surface mount applications in the WE-FLAT-I series. This component is classified as obsolete, necessitating identification of active equivalent parts that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

701014100

Würth ElektronikIn Stock: 2213701014100 Datasheet

Current PartRFQ

78436432010

Würth ElektronikIn Stock: 104878436432010 Datasheet

SimilarRFQ

B82559B2102A027

EPCOS - TDK ElectronicsIn Stock: 2574B82559B2102A027 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 701014100 is determined by the following critical parameters:

• Inductance Value: Must be 1 µH (±25% tolerance acceptable)
• Current Rating: Minimum 50 A continuous current capability
• DC Resistance: Maximum 0.6 mOhm to maintain thermal and efficiency characteristics
• Shielding: Must be shielded construction
• Mounting: Surface mount configuration required
• Temperature Range: Must support -40°C to 150°C operation
• Package Footprint: Physical dimensions must accommodate 27.50mm x 27.50mm mounting area
• Compliance: AEC-Q200 rated, ROHS3 compliant

Two active alternatives meet these substitution criteria with variations in current saturation ratings and DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

78436432010 (Würth Elektronik WE-HCFA Series)

This part maintains identical inductance, DC resistance, and package footprint dimensions to the 701014100. The continuous current rating of 47 A is 3 A below the original specification, making this substitute suitable for applications where the design margin permits operation at reduced current levels. The higher saturation current (81 A) provides improved headroom above the continuous rating. Active product status and AEC-Q200 compliance ensure ongoing availability and automotive-grade reliability.

B82559B2102A027 (EPCOS - TDK Electronics ERU27 Series)

This part exceeds the original current rating at 52 A continuous with superior saturation performance (101.5 A). The DC resistance is reduced to 0.46 mOhm, providing lower thermal dissipation. The tighter inductance tolerance (±10% versus ±25%) offers improved circuit performance predictability. Physical dimensions show minor variations: length increases by 0.30mm and width decreases by 1.70mm, with a significant height reduction to 12.25mm. The ferrite drum core construction differs from the original wirewound design. Active product status and AEC-Q200 compliance are maintained. Tape & Reel packaging supports high-volume production requirements.

Both substitutes maintain full compliance with operating temperature range, shielding requirements, and regulatory standards (ROHS3, REACH Unaffected, EAR99).

Frequently Asked Questions (FAQ)

Q: Can 78436432010 be used as a direct replacement for 701014100?

A: 78436432010 is electrically compatible with identical inductance (1 µH), DC resistance (0.6 mOhm), and package footprint (27.50mm x 27.50mm). The 47 A continuous current rating is 3 A lower than the original 50 A specification. Substitution is valid only if circuit design permits operation at this reduced current level without exceeding thermal or performance limits.

Q: What are the advantages of B82559B2102A027 over the original part?

A: B82559B2102A027 provides higher continuous current capability (52 A), lower DC resistance (0.46 mOhm for reduced losses), tighter inductance tolerance (±10%), and higher saturation current (101.5 A). The reduced height (12.25mm versus 17.00mm) may provide PCB layout advantages. These characteristics make it suitable for applications requiring improved thermal performance or tighter electrical specifications.

Q: Are there package dimension compatibility concerns with B82559B2102A027?

A: B82559B2102A027 has minor footprint variations: length increases 0.30mm to 27.80mm and width decreases 1.70mm to 25.80mm. Height is significantly reduced to 12.25mm. These variations require PCB layout verification to confirm mechanical clearance and thermal management compatibility. The footprint change may necessitate design modification in space-constrained applications.

Q: Do both substitutes maintain AEC-Q200 compliance?

A: Both 78436432010 and B82559B2102A027 carry AEC-Q200 ratings, meeting automotive-grade reliability and qualification standards equivalent to the original 701014100.

Q: What packaging formats are available for these substitutes?

A: 78436432010 is supplied in Tray packaging. B82559B2102A027 is supplied in Tape & Reel (TR) format, supporting automated assembly processes for production environments.

Q: How do the core materials differ between these parts?

A: The original 701014100 and 78436432010 use wirewound construction with unspecified core material. B82559B2102A027 uses a ferrite drum core with wirewound construction, contributing to its improved saturation characteristics and reduced DC resistance.