Murata Power Solutions 34222C Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 34222C is a 2.2 µH shielded wirewound inductor rated for 1.7 A continuous current with a maximum DC resistance of 50mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is designed for applications requiring compact, shielded inductive filtering in power conversion and signal conditioning circuits. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for production deployment in regulated environments.

Substitute parts are identified when they maintain equivalent electrical performance within the specified parameter tolerances while offering improved availability, enhanced current ratings, or alternative core material construction that does not compromise circuit functionality.

Substiute Parts

34222C

Murata Power Solutions Inc.In Stock: 79534222C Datasheet

Current PartRFQ

SRR4018-2R2Y

Bourns Inc.In Stock: 2049SRR4018-2R2Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Murata 34222C is determined by strict adherence to the following electrical and mechanical criteria:

Primary Matching Criteria:

• Inductance value must equal 2.2 µH within the ±30% tolerance band
• Shielding configuration must be shielded to maintain electromagnetic isolation
• Operating temperature range must encompass or exceed -40°C to 125°C
• Mounting type must be surface mount for PCB compatibility
• RoHS3 compliance and MSL 1 rating required for regulatory alignment

Secondary Compatibility Criteria:

• Current rating must meet or exceed 1.7 A continuous
• DC resistance must not exceed 50mOhm maximum specification
• Package footprint must be compatible with existing PCB layout or allow mechanical rework

The Bourns SRR4018-2R2Y qualifies as a direct substitute based on matching inductance, shielding, temperature range, surface mount configuration, and regulatory certifications. The substitute provides enhanced current rating (2.1 A versus 1.7 A) and equivalent DC resistance performance (55mOhm maximum versus 50mOhm maximum), representing acceptable parameter variance within engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

The Bourns SRR4018-2R2Y is qualified as a direct substitute for the Murata 34222C based on electrical parameter equivalence and regulatory compliance alignment. Both components maintain Active product status with full RoHS3 compliance and MSL 1 moisture sensitivity rating, ensuring compatibility with current manufacturing and supply chain requirements.

The substitute component provides measurable advantages in current handling capacity (2.1 A versus 1.7 A), enabling operation with increased design margin in applications approaching the original part's current limit. The ferrite drum core construction of the Bourns part represents a different manufacturing approach compared to the Murata nonstandard core material, but both achieve the required inductance and shielding performance within specified tolerances.

The Bourns part features a smaller physical footprint (4.80mm x 4.80mm versus 5.20mm x 5.20mm), which may require PCB layout verification to confirm mechanical compatibility with existing component placement. Height specifications remain identical at 2.00mm maximum seated height, maintaining vertical clearance compatibility.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR4018-2R2Y be used as a direct replacement without circuit redesign?

A: Yes, provided that the smaller footprint (4.80mm x 4.80mm versus 5.20mm x 5.20mm) is compatible with existing PCB layout. Electrical parameters remain equivalent within specified tolerances. Mechanical verification of component placement is required before production implementation.

Q: What is the significance of the different core materials between the two parts?

A: The Murata part uses a nonstandard core material while the Bourns part uses ferrite. Both achieve the required 2.2 µH inductance and shielding performance. The ferrite construction in the Bourns part is a standard industry approach for shielded wirewound inductors and does not compromise circuit functionality when electrical parameters remain within specification.

Q: Does the 5mOhm increase in DC resistance (50mOhm to 55mOhm) affect circuit performance?

A: The 5mOhm difference represents a 10% increase in maximum DC resistance. For most filtering and power conversion applications, this variance falls within acceptable design margins. Circuit thermal analysis should confirm that the increased resistive loss does not exceed thermal design limits for the specific application.

Q: Are both parts suitable for high-reliability applications?

A: Both components maintain Active product status, RoHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating. These certifications indicate suitability for regulated manufacturing environments. Application-specific reliability requirements should be evaluated against component datasheets and qualification standards.

Q: What inventory considerations apply to these parts?

A: The Murata 34222C has 730 pieces in stock. The Bourns SRR4018-2R2Y has 2003 pieces in stock, providing significantly greater availability for production scaling or extended lead-time mitigation.