Würth Elektronik 831531501 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 831531501 is a 15 µH shielded molded inductor rated for 3 A continuous current with 120 mOhm DC resistance, designed for surface mount applications in the WE-MASH-I series. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity. Substitute parts must maintain electrical performance within the specified parameter tolerances while meeting the same environmental and compliance standards.

Substiute Parts

831531501

Würth ElektronikIn Stock: 1012831531501 Datasheet

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PA4341.153ANLT

Pulse ElectronicsIn Stock: 3280PA4341.153ANLT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 831531501 is determined by strict alignment with the following electrical and mechanical parameters:

• Inductance Value: 15 µH with ±20% tolerance
• Current Rating: Minimum 3 A continuous
• Saturation Current: Minimum 4.5 A
• Shielding: Shielded construction required
• DC Resistance: Maximum 140 mOhm (within acceptable operating margin)
• Operating Temperature: Minimum -40°C to 125°C range
• Mounting: Surface mount configuration
• Compliance: AEC-Q200 rated, ROHS3 compliant

The Pulse Electronics PA4341.153ANLT qualifies as a direct substitute based on matching inductance, current rating, saturation current, shielding type, and compliance certifications. Variations in DC resistance (140 mOhm maximum versus 120 mOhm nominal) and package dimensions remain within acceptable engineering tolerances for equivalent circuit performance.

Parameter Comparison

Engineering Selection Recommendations

The Pulse Electronics PA4341.153ANLT is qualified as a direct substitute for the obsolete Würth Elektronik 831531501 based on the following engineering criteria:

Electrical Equivalence: Both components maintain identical inductance values (15 µH ±20%), current ratings (3 A), and saturation current specifications (4.5 A). The DC resistance differential (140 mOhm maximum versus 120 mOhm nominal) represents a 16.7% increase within acceptable circuit design margins for most applications.

Compliance & Certification: Both parts carry AEC-Q200 automotive-grade ratings and ROHS3 compliance, ensuring equivalent reliability and environmental standards. The PA4341.153ANLT provides an extended operating temperature range (-55°C to 155°C) compared to the original specification (-40°C to 125°C), offering additional thermal margin.

Availability & Product Status: The PA4341.153ANLT is actively manufactured and stocked, providing supply chain continuity for the obsolete 831531501. This substitution eliminates design obsolescence risk while maintaining functional performance.

Mechanical Compatibility: Package dimensions (7.10 mm × 7.00 mm versus 7.00 mm × 7.00 mm) and height specifications (3.00 mm seated height) are compatible with standard surface mount assembly processes and PCB layouts designed for the original component.

Frequently Asked Questions (FAQ)

Q: Can the PA4341.153ANLT be used as a direct replacement without circuit redesign?

A: Yes. The PA4341.153ANLT meets all critical electrical parameters (inductance, current rating, saturation current) and maintains AEC-Q200 compliance. The 20 mOhm increase in DC resistance may result in marginally higher power dissipation in high-current applications but remains within acceptable engineering tolerances for equivalent circuit operation.

Q: What is the impact of the higher DC resistance on circuit performance?

A: The PA4341.153ANLT's 140 mOhm maximum DC resistance versus the 831531501's 120 mOhm nominal specification results in approximately 16.7% additional resistive loss. In applications where thermal management or efficiency is critical, this differential should be evaluated against specific circuit requirements.

Q: Are the package dimensions compatible with existing PCB layouts?

A: The dimensional differences (7.10 mm × 6.60 mm for PA4341.153ANLT versus 7.00 mm × 7.00 mm for 831531501) are within standard surface mount assembly tolerances. Both components use 2-SMD J-Lead configurations suitable for automated placement. PCB footprints designed for the original component will accommodate the substitute without modification.

Q: Does the extended operating temperature range of the PA4341.153ANLT provide additional design margin?

A: Yes. The PA4341.153ANLT operates from -55°C to 155°C compared to the 831531501's -40°C to 125°C range. This extended specification provides additional thermal margin for applications operating at temperature extremes, though the original specification range remains the design baseline.

Q: Are both components moisture sensitive?

A: Both components carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity limitations. Standard handling and storage procedures apply without special desiccant or humidity control requirements.

Q: What certifications apply to the substitute part?

A: The PA4341.153ANLT carries identical AEC-Q200 automotive-grade certification and ROHS3 compliance as the original 831531501, ensuring equivalent reliability and environmental standards for regulated applications.