Würth Elektronik 831756800 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 831756800 is a 6.8 µH shielded molded inductor rated for 9 A continuous current with 18.5mOhm 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 maintenance applications.

Substiute Parts

831756800

Würth ElektronikIn Stock: 1159831756800 Datasheet

Current PartRFQ

PA4344.682NLT

Pulse ElectronicsIn Stock: 1555PA4344.682NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 831756800 is determined by strict equivalence in the following electrical and mechanical parameters:

• Inductance value: 6.8 µH (exact match required)
• Shielding type: Shielded construction
• Mounting technology: Surface mount
• Operating temperature range: -40°C ~ 125°C minimum
• Regulatory compliance: AEC-Q200 and ROHS3 certification
• Test frequency: 100 kHz

The substitute part PA4344.682NLT from Pulse Electronics meets these core substitution criteria. While the substitute exhibits superior electrical performance characteristics (higher current rating and lower DCR), these represent functional improvements that maintain backward compatibility with the original design specification.

Parameter Comparison

Engineering Selection Recommendations

The PA4344.682NLT qualifies as a direct functional substitute for the 831756800 based on matching inductance value, shielding configuration, temperature operating range, and regulatory certifications (AEC-Q200, ROHS3). Both components maintain identical electrical performance at the specified 100 kHz test frequency.

The substitute part carries active product status, ensuring continued availability and supply chain support. The enhanced current rating (19 A vs. 9 A) and reduced DC resistance (9.2mOhm vs. 18.5mOhm) provide improved thermal performance and lower power dissipation, representing functional advantages for thermal-constrained applications.

Physical package dimensions differ between the two parts. The 831756800 measures 13.00mm × 13.00mm, while the PA4344.682NLT measures 17.70mm × 17.20mm with a seated height of 7.00mm. PCB layout verification is required to confirm mechanical fit within existing design constraints.

Frequently Asked Questions (FAQ)

Q: Can the PA4344.682NLT directly replace the 831756800 in existing designs?

A: Electrical substitution is valid based on matching inductance, shielding, temperature range, and AEC-Q200 compliance. Physical package dimensions must be verified against PCB layout constraints before implementation.

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

A: The PA4344.682NLT exhibits 9.2mOhm maximum DC resistance compared to 18.5mOhm in the original part. This represents approximately 50% reduction in resistive losses, resulting in lower heat generation and improved efficiency in current-carrying applications.

Q: Are both parts suitable for automotive applications?

A: Both components carry AEC-Q200 certification, qualifying them for automotive-grade applications within their specified operating temperature range of -40°C to 125°C.

Q: What packaging format is the substitute available in?

A: The PA4344.682NLT is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly operations.

Q: How do the saturation current ratings compare?

A: The original 831756800 saturates at 20 A, while the PA4344.682NLT saturates at 32 A. The substitute provides 60% higher saturation margin, offering greater design headroom for transient current conditions.