23330C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 23330C is a 33 µH unshielded wirewound surface mount inductor rated for 640 mA continuous current with a maximum DC resistance of 497mOhm. This component is part of the 2300 series and maintains active product status with full RoHS3 compliance. Equivalent and substitute parts are identified when circuit designs require alternative sourcing, inventory availability, or when specific performance characteristics align with application requirements while maintaining functional compatibility.

Substiute Parts

23330C

Murata Power SolutionsIn Stock: 123723330C Datasheet

Current PartRFQ

SDR0403-330KL

Bourns Inc.In Stock: 7889SDR0403-330KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 23330C is determined by strict alignment of electrical and mechanical parameters. The primary criteria for equivalent parts are:

• Inductance value: 33 µH (exact match required)
• Current rating: 640 mA minimum continuous current capability
• DC resistance: Must not exceed application tolerance limits
• Physical dimensions: 0.177" L x 0.157" W (4.50mm x 4.00mm) footprint compatibility
• Mounting type: Surface mount configuration
• Shielding classification: Unshielded
• Compliance certifications: RoHS3 and REACH status

The Bourns Inc. SDR0403-330KL meets these core substitution criteria with identical inductance, current rating, and footprint dimensions. Variations in DCR (540mOhm vs. 497mOhm) and operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C) represent acceptable engineering tolerances for most applications where the 23330C is specified.

Parameter Comparison

Engineering Selection Recommendations

Both the 23330C and SDR0403-330KL maintain active product status with identical RoHS3 and REACH compliance certifications, ensuring regulatory alignment for current and future applications. The SDR0403-330KL provides an extended operating temperature range (-40°C ~ 125°C) compared to the 23330C (-40°C ~ 85°C), offering broader thermal performance capability. The DCR difference of 43mOhm (540mOhm vs. 497mOhm) represents a 8.6% variance and must be evaluated against specific circuit power dissipation and efficiency requirements. Both components share identical footprint dimensions and current ratings, enabling direct PCB layout compatibility. Selection between these parts should be based on thermal environment requirements, available inventory, and application-specific DCR tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can the SDR0403-330KL directly replace the 23330C in existing designs?

A: Direct replacement is possible when the application thermal environment does not exceed 85°C and the additional DCR of 43mOhm does not compromise circuit performance. PCB footprint and current handling are identical. Circuit simulation or thermal analysis is necessary to confirm compatibility in power-sensitive applications.

Q: What is the significance of the height difference between these parts?

A: The SDR0403-330KL seated height is 0.138" (4.60mm) compared to the 23330C at 0.126" (3.20mm), representing a 0.012" (0.30mm) increase. This difference must be evaluated against PCB clearance constraints, particularly in applications with height-restricted enclosures or multi-layer board stackups.

Q: Are there differences in core material that affect performance?

A: The 23330C uses a standard wirewound construction, while the SDR0403-330KL employs a drum core ferrite wirewound design. Both maintain identical inductance and current ratings at the specified test frequency of 1 kHz. Core material differences may affect frequency response characteristics outside the specified operating parameters.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the 23330C and SDR0403-330KL are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity level). Regulatory and environmental compliance is equivalent between these components.

Q: What factors should determine part selection between these two inductors?

A: Selection criteria include: operating temperature environment (SDR0403-330KL supports up to 125°C), DC resistance tolerance requirements (43mOhm difference), available inventory, cost considerations, and PCB height clearance availability. Both parts are functionally equivalent for 33 µH, 640 mA surface mount inductor applications.