34L224C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 34L224C is a 220 µH shielded wirewound inductor rated for 160 mA with a maximum DC resistance of 8Ohm, designed for surface mount applications in the 3400L series. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across the industrial temperature range of -40°C to 125°C and meets RoHS compliance requirements.

Substiute Parts

34L224C

Murata Power SolutionsIn Stock: 79834L224C Datasheet

Current PartRFQ

744042221

Würth ElektronikIn Stock: 1920744042221 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 34L224C is based on the following critical electrical and mechanical parameters:

• Inductance Value: 220 µH (primary functional requirement)
• Current Rating: Minimum 160 mA to support original circuit design
• DC Resistance: Lower DCR values improve efficiency and reduce power dissipation
• Shielding: Shielded construction required to maintain electromagnetic compatibility
• Mounting Type: Surface mount configuration for PCB integration
• Operating Temperature Range: -40°C to 125°C compatibility
• Compliance: RoHS compliance for regulatory alignment

The Würth Elektronik 744042221 meets these substitution criteria with equivalent inductance, higher current rating (200 mA), improved DC resistance (3.2Ohm), and active product status.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 744042221 is the qualified substitute for the obsolete Murata 34L224C. Selection is based on:

• Product Status: The 744042221 maintains active product status, ensuring long-term availability and supply chain stability compared to the obsolete 34L224C.
• Electrical Equivalence: Both components provide 220 µH inductance with shielded construction and identical operating temperature ranges.
• Performance Enhancement: The 744042221 offers superior electrical characteristics with 200 mA current rating (exceeding the 160 mA requirement) and significantly lower DC resistance (3.2Ohm versus 8Ohm maximum), resulting in reduced power dissipation.
• Regulatory Compliance: Both components meet RoHS requirements. The 744042221 carries ROHS3 compliance, representing current regulatory alignment.
• Packaging Compatibility: Both components are surface mount inductors with MSL 1 rating, suitable for standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 744042221 directly replace the 34L224C in existing designs?

A: Yes. Both inductors provide 220 µH inductance with shielded construction, identical operating temperature ranges (-40°C to 125°C), and surface mount configuration. The 744042221 exceeds the original current rating and provides lower DC resistance, making it functionally compatible.

Q: What is the significance of the lower DC resistance in the 744042221?

A: The 744042221 has 3.2Ohm maximum DCR compared to 8Ohm in the 34L224C. Lower DC resistance reduces resistive losses and heat generation during operation, improving circuit efficiency and component thermal performance.

Q: Does the ±30% tolerance of the 744042221 affect substitution suitability?

A: The 744042221 tolerance of ±30% is wider than the 34L224C tolerance of ±20%. If the original circuit design requires tighter inductance tolerance, this difference must be evaluated against specific application requirements. Both components meet the 220 µH nominal specification.

Q: Are there package dimension differences between these inductors?

A: Yes. The 34L224C uses a nonstandard package measuring 0.205" × 0.205" × 0.047" (5.20mm × 5.20mm × 1.20mm). The 744042221 uses the 1919 (4848 Metric) package measuring 0.189" × 0.189" × 0.079" (4.80mm × 4.80mm × 2.00mm). PCB layout verification is required to confirm physical fit.

Q: What compliance certifications apply to both components?

A: Both inductors are RoHS compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8504.50.4000. The 744042221 carries ROHS3 certification, representing alignment with current regulatory standards.