Würth Elektronik 831753300 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 831753300 is a 3.3 µH shielded molded inductor rated for 14 A continuous current with a DC resistance of 9.2 mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part is manufactured in a 2-SMD, J-Lead surface mount package and complies with AEC-Q200 automotive qualification standards.

Substiute Parts

831753300

Würth ElektronikIn Stock: 908831753300 Datasheet

Current PartRFQ

PA4349.332ANLT

Pulse ElectronicsIn Stock: 2739PA4349.332ANLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 831753300 is determined by the following critical parameters:

• Inductance Value: Must be 3.3 µH with ±20% tolerance to maintain circuit performance
• Current Rating: Substitute must support minimum 14 A continuous current; higher ratings provide design margin
• DC Resistance (DCR): Lower DCR values reduce power dissipation and heat generation
• Saturation Current (Isat): Must exceed 30 A to prevent core saturation under transient conditions
• Shielding: Shielded construction required to minimize electromagnetic interference
• Surface Mount Compatibility: Package must be suitable for SMD assembly processes
• Environmental Compliance: AEC-Q200 and ROHS3 compliance required for automotive and regulated applications
• Operating Temperature: Must support -40°C to 125°C range

The Pulse Electronics PA4349.332ANLT qualifies as a substitute based on matching inductance value, tolerance, shielding type, surface mount configuration, and compliance certifications. The substitute provides superior electrical performance with higher current ratings and lower DCR.

Parameter Comparison

Engineering Selection Recommendations

The Pulse Electronics PA4349.332ANLT is a qualified substitute for the obsolete Würth Elektronik 831753300. Both components meet AEC-Q200 automotive qualification and ROHS3 compliance requirements. The substitute provides enhanced electrical performance with 47 A continuous current rating versus 14 A, and significantly reduced DC resistance of 1.75 mOhm maximum compared to 9.2 mOhm. The extended operating temperature range of -55°C to 155°C provides additional thermal margin. Both components are tested at 100 kHz and maintain identical inductance values and tolerance specifications.

Physical package differences exist: the substitute uses a nonstandard package measuring 24.60 mm × 22.00 mm with 13.00 mm height, compared to the original 13.00 mm × 13.00 mm footprint. PCB layout modification is required for implementation.

Frequently Asked Questions (FAQ)

Q: Can the PA4349.332ANLT directly replace the 831753300 without circuit modification?

A: The inductance value and electrical characteristics are compatible. However, the physical package dimensions differ significantly (24.60 mm × 22.00 mm versus 13.00 mm × 13.00 mm), requiring PCB layout redesign. Electrical performance is maintained or improved.

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

A: The PA4349.332ANLT exhibits 1.75 mOhm maximum DCR compared to 9.2 mOhm in the original part. Lower DCR reduces resistive losses, decreasing power dissipation and operating temperature. This improves efficiency and thermal performance in the application circuit.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the 831753300 and PA4349.332ANLT carry AEC-Q200 qualification, confirming suitability for automotive-grade applications with defined reliability and performance standards.

Q: How do the current ratings compare?

A: The substitute part is rated for 47 A continuous current with 37 A saturation current, compared to 14 A continuous and 30 A saturation for the original. The substitute provides significantly higher current capacity, allowing use in higher-power applications or providing design margin in existing circuits.

Q: What packaging format is the substitute supplied in?

A: The PA4349.332ANLT is supplied in Tape & Reel (TR) format, standard for high-volume SMD assembly operations. The original part packaging format was not specified in available data.

Q: Do both parts have identical moisture sensitivity ratings?

A: Yes. Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity limitations and no special storage or handling requirements.