0520CDMCDS-3R3MC Equivalent & Substitute Parts

Part Overview

The 0520CDMCDS-3R3MC is a 3.3 µH shielded wirewound inductor manufactured by Sumida America Components Inc., rated for 3.6 A continuous current with 50mOhm DC resistance. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across the industrial temperature range of -40°C to 105°C and is RoHS3 compliant with MSL 1 rating.

Substiute Parts

0520CDMCDS-3R3MC

Sumida America Components Inc.In Stock: 10780520CDMCDS-3R3MC Datasheet

Current PartRFQ

MPLCG0530L3R3

KEMETIn Stock: 786MPLCG0530L3R3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0520CDMCDS-3R3MC is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 3.3 µH at 100 kHz test frequency
• Inductance tolerance: ±20%
• Current rating: 3.6 A minimum
• Shielding: Shielded construction required
• Mounting type: Surface Mount
• Package classification: Nonstandard form factor
• Operating temperature range: Minimum -40°C to 105°C coverage

Allowable Variation Parameters:

• DC Resistance (DCR): Substitute parts may exceed 50mOhm specification provided the value remains within acceptable circuit performance limits
• Current saturation (Isat): Substitute parts may have different saturation ratings
• Core material: Wirewound construction with alternative core materials (drum core, metal composite) permitted
• Physical dimensions: Minor variations acceptable within nonstandard package constraints
• Product status: Active status preferred for long-term availability

The MPLCG0530L3R3 from KEMET meets all mandatory matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: MPLCG0530L3R3 (KEMET)

The MPLCG0530L3R3 is the qualified substitute for the obsolete 0520CDMCDS-3R3MC. Selection is based on the following engineering criteria:

Compliance and Certification:

• Both parts are RoHS3 compliant, meeting environmental regulatory requirements
• KEMET part maintains REACH compliance status
• Both components carry EAR99 ECCN classification

Electrical Equivalence:

• Inductance value and tolerance are identical at 3.3 µH ±20%
• Current rating matches at 3.6 A
• DC resistance of 58mOhm (max) is within acceptable circuit performance variation from the original 50mOhm specification
• Test frequency alignment at 100 kHz ensures measurement consistency

Mechanical and Thermal Considerations:

• Surface mount packaging is identical
• Nonstandard form factor classification matches
• Operating temperature range of -40°C to 125°C exceeds the original -40°C to 105°C requirement
• Physical dimensions are compatible with minor height increase (3.00mm vs 2.00mm seated height)
• MSL 1 rating on original part; KEMET part maintains moisture sensitivity compatibility

Availability and Product Lifecycle:

• KEMET part is active status, ensuring long-term procurement availability
• Original Sumida part is obsolete, making substitution necessary for new designs and ongoing production

The MPLCG0530L3R3 substitution requires verification of PCB layout clearance for the increased height dimension (3.00mm vs 2.00mm) and confirmation that the 8mOhm DCR increase does not impact circuit performance in power loss-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the MPLCG0530L3R3 be used as a direct replacement for the 0520CDMCDS-3R3MC in existing designs?

A: The MPLCG0530L3R3 meets all electrical specifications for direct substitution. Physical layout verification is required due to the increased seated height (3.00mm vs 2.00mm). PCB clearance and component spacing must be confirmed before implementation.

Q: What is the significance of the DCR difference between 50mOhm and 58mOhm?

A: The 8mOhm increase represents a 16% rise in DC resistance. In applications where inductor losses directly impact efficiency or thermal performance, this variation must be evaluated. For most general-purpose filtering and energy storage applications, this difference is within acceptable tolerance.

Q: Why does the KEMET part have a lower saturation current (3.1A vs 4.9A)?

A: The saturation current specification reflects the core material and construction differences between the drum core metal composite design (KEMET) and the standard wirewound design (Sumida). Both parts maintain the 3.6 A continuous current rating. The lower saturation point on the KEMET part indicates it will saturate at lower peak currents; circuit designs must ensure peak current stress does not exceed 3.1 A.

Q: Are there any compliance or certification differences between the two parts?

A: Both parts are RoHS3 compliant. The KEMET part carries REACH Unaffected status, while the Sumida part does not specify REACH status. Both are classified as EAR99 for export control purposes. No functional compliance barriers exist for substitution.

Q: What is the impact of the extended operating temperature range on the KEMET part?

A: The KEMET part operates to 125°C versus the original 105°C maximum. This extended range provides additional thermal margin and is beneficial for applications in elevated ambient or high-power environments. No negative impact results from this specification improvement.

Q: How should the physical dimension differences be handled in PCB design?

A: The length (5.50mm) and width (5.00mm vs 5.20mm) are essentially equivalent. The critical difference is the seated height increase from 2.00mm to 3.00mm. PCB layout must accommodate this 1.00mm increase. Verify clearance to adjacent components, solder mask openings, and any mechanical constraints in the assembly area.

Q: Is the nonstandard package type a limitation for substitution?

A: Both parts use nonstandard packaging, indicating custom form factors specific to each manufacturer. The nonstandard classification does not prevent substitution; it indicates that standard IPC package designations do not apply. Footprint verification against actual component dimensions is required for both parts.

Q: What inventory considerations apply to this substitution?

A: The original Sumida part (0520CDMCDS-3R3MC) is obsolete with 995 pieces currently in stock. The KEMET substitute (MPLCG0530L3R3) is active status with 776 pieces in stock. For new production, the KEMET part should be specified to ensure long-term supply continuity.