Würth Elektronik 831754700 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 831754700 is a 4.7 µH shielded molded inductor rated for 11 A continuous current with 12 mOhm DC resistance, designed for surface mount applications in the WE-MASH-I series. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and repair applications.

Substiute Parts

831754700

Würth ElektronikIn Stock: 899831754700 Datasheet

Current PartRFQ

PA4349.472ANLT

Pulse ElectronicsIn Stock: 2116PA4349.472ANLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 831754700 is based on matching the following critical electrical and mechanical parameters:

• Inductance value: 4.7 µH at 100 kHz test frequency
• Inductance tolerance: ±20%
• Shielding requirement: Shielded construction
• Surface mount configuration
• AEC-Q200 automotive qualification
• RoHS3 compliance
• MSL 1 moisture sensitivity rating

The Pulse Electronics PA4349.472ANLT qualifies as a functional equivalent based on identical inductance specification, matching tolerance, shielded construction, surface mount design, and equivalent compliance certifications. Differences in current rating, DC resistance, and physical dimensions reflect design improvements in the active substitute part.

Parameter Comparison

Engineering Selection Recommendations

The Pulse Electronics PA4349.472ANLT is an active equivalent for the obsolete Würth Elektronik 831754700. Both components meet AEC-Q200 automotive qualification and ROHS3 compliance requirements. The substitute part provides superior electrical performance with lower DC resistance (2.2 mOhm vs. 12 mOhm) and higher current handling capability (44 A vs. 11 A), while maintaining identical inductance specification and tolerance. The extended operating temperature range (-55°C to 155°C vs. -40°C to 125°C) provides additional thermal margin. Physical package differences require PCB layout verification prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the PA4349.472ANLT directly replace the 831754700 in existing designs?

A: Electrical substitution is valid based on matching inductance, tolerance, shielding, and compliance certifications. Physical package dimensions differ (24.60mm x 22.00mm vs. 13.00mm x 13.00mm), requiring PCB footprint and layout verification before implementation.

Q: What are the key differences between these parts?

A: The substitute part offers improved DC resistance (2.2 mOhm vs. 12 mOhm), higher current rating (44 A vs. 11 A), and extended temperature range (-55°C to 155°C vs. -40°C to 125°C). Inductance value and tolerance remain identical at 4.7 µH ±20%.

Q: Are both parts automotive qualified?

A: Yes, both components carry AEC-Q200 certification and ROHS3 compliance, suitable for automotive applications.

Q: What is the impact of lower DC resistance in the substitute part?

A: Lower DC resistance reduces resistive losses and heat generation during operation, improving efficiency in the application circuit.

Q: Must the PCB layout be modified for the substitute part?

A: Yes, the larger physical dimensions of the PA4349.472ANLT (24.60mm x 22.00mm vs. 13.00mm x 13.00mm) require PCB footprint redesign and layout verification.