CDMC6D28NP-R68MC Equivalent & Substitute Parts

Part Overview

The CDMC6D28NP-R68MC is a 680 nH shielded inductor manufactured by Sumida America Components Inc., designed for surface mount applications requiring high current handling and low DC resistance. This component features a metal composite core with a current rating of 12.1 A and maximum DC resistance of 5.4 mOhm. The part is Active status and RoHS3 compliant, suitable for applications in power conversion, filtering, and signal integrity circuits operating across the -40°C to 125°C temperature range. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit component interchange based on equivalent electrical and mechanical specifications.

Substiute Parts

CDMC6D28NP-R68MC

Sumida America Components Inc.In Stock: 896CDMC6D28NP-R68MC Datasheet

Current PartRFQ

PA4341.681NLT

Pulse ElectronicsIn Stock: 5915PA4341.681NLT Datasheet

DirectRFQ

SRP7030-R68M

Bourns Inc.In Stock: 2904SRP7030-R68M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDMC6D28NP-R68MC are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 680 nH with ±20% tolerance
• Shielding: Shielded construction
• Mounting type: Surface mount
• Operating temperature range: -40°C to 125°C minimum
• DC resistance: Maximum 5.5 mOhm (within acceptable tolerance band)
• Current rating: Minimum 12.1 A (saturation current ≥ 11.3 A)
• RoHS3 compliance
• Moisture sensitivity level: 1 (Unlimited)

Identified Substitutes:

PA4341.681NLT (Pulse Electronics): Meets all primary criteria with 15.5 A current rating, 5.5 mOhm maximum DCR, and AEC-Q200 automotive qualification. Inductance test frequency differs (100 kHz vs. 1 MHz) but inductance value and tolerance remain equivalent.

SRP7030-R68M (Bourns Inc.): Meets all primary criteria with 15.5 A current rating, 5.5 mOhm maximum DCR, and iron core construction. Inductance test frequency differs (100 kHz vs. 1 MHz) but inductance value and tolerance remain equivalent. Slightly larger package dimensions (7.80mm x 7.00mm x 3.20mm vs. 7.25mm x 6.50mm x 3.00mm).

Parameter Comparison

Engineering Selection Recommendations

PA4341.681NLT Selection Criteria: This substitute is suitable when higher current margin is required. The part provides 15.5 A current rating versus 12.1 A for the primary part, with equivalent DC resistance (5.5 mOhm maximum). AEC-Q200 automotive qualification provides additional reliability assurance for demanding applications. Footprint dimensions are slightly larger (7.60mm x 6.90mm vs. 7.25mm x 6.50mm), requiring PCB layout verification. Height remains identical at 3.00mm maximum.

SRP7030-R68M Selection Criteria: This substitute offers equivalent electrical performance with 15.5 A current rating and 5.5 mOhm maximum DCR. Iron core construction differs from the metal composite core of the primary part. Package dimensions are largest among the three options (7.80mm x 7.00mm x 3.20mm), requiring PCB layout confirmation. Selection is appropriate when board space permits and iron core characteristics are acceptable for the application.

Compliance Basis: All three parts maintain RoHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and operating temperature range of -40°C to 125°C. All parts are Active status with current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can PA4341.681NLT directly replace CDMC6D28NP-R68MC in existing designs?

A: Direct replacement is possible when PCB layout accommodates the slightly larger footprint (7.60mm x 6.90mm vs. 7.25mm x 6.50mm). Electrical parameters are equivalent: 680 nH inductance, ±20% tolerance, 5.5 mOhm maximum DCR, and identical 3.00mm maximum height. Verify PCB trace routing and component clearances before implementation.

Q: What is the difference between metal composite and iron core construction?

A: The CDMC6D28NP-R68MC uses metal composite core material, while SRP7030-R68M uses iron core. Both achieve 680 nH inductance with ±20% tolerance and equivalent DC resistance. Core material selection affects frequency response characteristics and thermal behavior. Selection depends on application-specific frequency requirements and thermal management needs.

Q: Are there current rating differences that affect circuit design?

A: The primary part (CDMC6D28NP-R68MC) has 12.1 A current rating with 11.3 A saturation current. Both substitutes (PA4341.681NLT and SRP7030-R68M) provide 15.5 A current rating with higher saturation currents (25 A and 23 A respectively). Substitutes provide additional current margin and are suitable for applications requiring the primary part's specifications.

Q: Do package dimension differences require PCB redesign?

A: PA4341.681NLT requires minimal layout adjustment (7.60mm x 6.90mm vs. 7.25mm x 6.50mm). SRP7030-R68M has larger footprint (7.80mm x 7.00mm) and taller profile (3.20mm vs. 3.00mm). Verify available PCB space and component clearances. Height difference may affect stacking or enclosure fit in space-constrained applications.

Q: What compliance certifications apply to all three parts?

A: All parts are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). PA4341.681NLT carries AEC-Q200 automotive qualification. All parts operate across -40°C to 125°C temperature range. Verify specific compliance requirements for your application before final selection.

Q: How do inductance test frequencies affect part selection?

A: CDMC6D28NP-R68MC is tested at 1 MHz, while PA4341.681NLT and SRP7030-R68M are tested at 100 kHz. Both test frequencies confirm 680 nH inductance with ±20% tolerance. Inductance value and tolerance remain equivalent across the specified frequency range. Application frequency requirements should be evaluated independently of test frequency.