Murata Power Solutions 43212C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 43212C is a 2.1 µH unshielded toroidal inductor rated for 21 A continuous current with a maximum DC resistance of 2.22mOhm. This component is designed for surface mount applications in power conversion and filtering circuits. The part is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

43212C

Murata Power Solutions Inc.In Stock: 106543212C Datasheet

Current PartRFQ

PL8404NL

iNRCORE, LLCIn Stock: 648PL8404NL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 43212C is determined by strict equivalence across the following electrical and mechanical parameters:

• Inductance value: 2.1 µH (exact match required)
• Current rating: 21 A minimum
• DC resistance: Must not exceed the application tolerance window
• Toroidal, unshielded construction
• Surface mount configuration
• Operating temperature range compatibility
• Nonstandard package dimensions

The iNRCORE PL8404NL meets these substitution criteria. Both components share identical inductance and current ratings, operate across overlapping temperature ranges, and maintain compatible DC resistance specifications within acceptable engineering margins for power conversion applications.

Parameter Comparison

Engineering Selection Recommendations

The iNRCORE PL8404NL is a direct functional equivalent to the obsolete Murata 43212C. Selection between these components should be based on:

• Product availability and lead time requirements
• DC resistance tolerance impact on thermal performance (0.28mOhm difference)
• Extended operating temperature range of the PL8404NL (-55°C vs -40°C minimum)
• Compliance certifications: both components meet RoHS requirements; PL8404NL carries ROHS3 certification
• Packaging format: both use nonstandard toroidal packages with minor dimensional variations

The PL8404NL offers superior temperature range coverage and current regulatory compliance status, making it suitable for applications requiring extended environmental specifications or updated compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the PL8404NL replace the 43212C in existing designs?

A: Yes. Both components share identical inductance (2.1 µH) and current ratings (21 A). The PL8404NL operates across a wider temperature range and carries current RoHS3 certification. DC resistance differs by 0.28mOhm maximum, which must be evaluated against circuit thermal and efficiency requirements.

Q: What is the significance of the DC resistance difference?

A: The PL8404NL has a maximum DCR of 2.5mOhm compared to the 43212C at 2.22mOhm. This 12.6% increase affects power dissipation and thermal performance. For high-current applications, verify that the additional resistive loss remains within acceptable operating parameters.

Q: Are the physical dimensions compatible?

A: Both components use nonstandard toroidal packages. The 43212C measures 23.10mm L × 20.30mm W × 9.90mm H (seated). The PL8404NL measures 23.11mm L × 17.78mm W × 12.95mm H (seated). Width and height differ; verify PCB layout and thermal clearances before substitution.

Q: What compliance certifications apply?

A: The 43212C is RoHS Compliant. The PL8404NL is ROHS3 Compliant, representing current regulatory alignment. Both components carry MSL 1 (Unlimited) moisture sensitivity ratings and EAR99 export classification.

Q: Is the extended temperature range of the PL8404NL beneficial?

A: The PL8404NL operates from -55°C to 130°C versus the 43212C range of -40°C to 125°C. This extended range provides design margin for applications with extreme environmental exposure or thermal cycling requirements.