Murata Power Solutions 82332C Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 82332C is a 3.3 µH unshielded wirewound inductor rated for 950 mA continuous current with a maximum DC resistance of 138mOhm. This surface mount component in 1210 (3225 Metric) package is designed for applications requiring compact, high-frequency energy storage and filtering. The part is currently active in production and maintains full RoHS3 and REACH compliance. Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining functional compatibility in the target application.

Substiute Parts

82332C

Murata Power SolutionsIn Stock: 67182332C Datasheet

Current PartRFQ

SDR0302-3R3ML

Bourns Inc.In Stock: 5599SDR0302-3R3ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 82332C is determined by the following critical parameters:

• Inductance Value: Must be 3.3 µH within ±20% tolerance
• Current Rating: Must meet or exceed 950 mA continuous current capability
• DC Resistance: Must not exceed 138mOhm maximum
• Shielding Configuration: Must be unshielded to maintain electromagnetic compatibility with the original design
• Operating Temperature Range: Must support minimum -40°C to 85°C operation
• Mounting Type: Must be surface mount compatible
• Compliance: Must maintain RoHS3 and REACH compliance status

The Bourns Inc. SDR0302-3R3ML meets these substitution criteria with equivalent inductance, superior current rating (1.4 A vs. 950 mA), lower DC resistance (110mOhm vs. 138mOhm), and extended operating temperature range (-40°C to 125°C). Physical dimensions differ slightly due to different core construction (drum core vs. standard wirewound), but both components are unshielded surface mount inductors in comparable form factors.

Parameter Comparison

Engineering Selection Recommendations

The SDR0302-3R3ML from Bourns Inc. is a qualified substitute for the 82332C based on the following engineering criteria:

Electrical Equivalence: Both components deliver 3.3 µH inductance within ±20% tolerance. The Bourns substitute provides superior electrical performance with 1.4 A current rating (47% higher than the 950 mA requirement) and 110mOhm DC resistance (20% lower than the 138mOhm maximum), resulting in reduced thermal dissipation and improved efficiency margins.

Compliance and Certification: Both parts maintain identical RoHS3 and REACH compliance status, ensuring regulatory requirements are met in all target markets. Moisture sensitivity level (MSL 1 - Unlimited) is equivalent for both components.

Operating Environment: The Bourns substitute extends the operating temperature range to -40°C to 125°C, providing additional thermal margin beyond the original -40°C to 85°C specification.

Physical Compatibility: While package designations differ (1210 vs. Nonstandard), both components are surface mount inductors with comparable physical dimensions (3.20mm x 2.50mm vs. 3.00mm x 2.80mm). PCB layout verification is required to confirm footprint compatibility in the target application.

Frequently Asked Questions (FAQ)

Q: Can the SDR0302-3R3ML be used as a direct replacement for the 82332C?

A: The SDR0302-3R3ML meets all critical electrical parameters (inductance, current rating, DC resistance, shielding, and compliance). Physical dimensions are similar but not identical. Verify PCB footprint compatibility before implementation.

Q: What are the key differences between these two inductors?

A: The primary differences are core construction (Murata uses standard wirewound; Bourns uses drum core ferrite), current rating (1.4 A vs. 950 mA), DC resistance (110mOhm vs. 138mOhm), and operating temperature range (-40 to 125°C vs. -40 to 85°C). Inductance value and tolerance are identical.

Q: Does the higher current rating of the substitute part affect circuit performance?

A: No. A higher current rating indicates greater thermal margin and lower saturation risk. The substitute will perform equivalently or better in the same application circuit.

Q: Are there any compliance concerns with substitution?

A: Both parts maintain identical RoHS3 and REACH compliance status. No additional compliance verification is required.

Q: What should be checked before implementing the substitute part?

A: Verify PCB footprint compatibility using the provided dimensions (3.00mm L x 2.80mm W x 2.80mm H for the Bourns part). Confirm that the nonstandard package designation does not conflict with assembly equipment specifications.

Q: Is the lower DC resistance of the substitute beneficial?

A: Yes. Lower DC resistance reduces I²R losses and heat generation, improving overall circuit efficiency and component reliability.