CDR95NP-6R8MC Equivalent & Substitute Parts

Part Overview

The CDR95NP-6R8MC is a 6.8 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc., rated for 4.5 A continuous current with a maximum DC resistance of 23 mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain the same inductance value, tolerance, and core material while accommodating variations in current rating, DC resistance, and physical dimensions within acceptable application parameters.

Substiute Parts

CDR95NP-6R8MC

Sumida America Components Inc.In Stock: 1016CDR95NP-6R8MC Datasheet

Current PartRFQ

B82476B1682M100

EPCOS - TDK ElectronicsIn Stock: 1219B82476B1682M100 Datasheet

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P0751.682NLT

Pulse ElectronicsIn Stock: 3864P0751.682NLT Datasheet

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SDR1005-6R8ML

Bourns Inc.In Stock: 3128SDR1005-6R8ML Datasheet

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SDR1307-6R8ML

Bourns Inc.In Stock: 2259SDR1307-6R8ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following criteria:

Primary Matching Criteria:

• Inductance value: 6.8 µH (exact match required)
• Inductance tolerance: ±20% (exact match required)
• Core material: Ferrite (exact match required)
• Type: Drum Core, Wirewound or Wirewound (exact match required)
• Shielding: Unshielded (exact match required)
• Mounting type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

• Current rating: Must equal or exceed 4.5 A
• DC resistance: Lower values acceptable; higher values require application verification
• Operating temperature range: Must encompass or extend the original -40°C ~ 100°C range
• Physical dimensions: Variations acceptable within PCB layout constraints
• RoHS and MSL compliance: Must maintain ROHS3 and MSL 1 status

All four substitute parts meet the primary matching criteria. Secondary parameters vary and are detailed in the comparison table below.

Parameter Comparison

Engineering Selection Recommendations

B82476B1682M100 (EPCOS-TDK Electronics)

This substitute offers the closest electrical match to the CDR95NP-6R8MC. Current rating of 4.8 A exceeds the original 4.5 A specification, and DC resistance of 21 mOhm is lower, reducing power dissipation. Operating temperature range extends to 150°C, providing superior thermal margin. AEC-Q200 automotive qualification adds reliability certification. Physical dimensions are nearly identical (0.510" x 0.370" vs. 0.508" x 0.370"), with height reduced to 5.08mm. Product status is active with established supply chain. This part is the primary recommendation for direct substitution.

SDR1307-6R8ML (Bourns Inc.)

This substitute provides the highest current rating at 6 A with the lowest DC resistance at 17 mOhm, delivering superior performance margin. Saturation current of 10.5 A significantly exceeds the original 5.3 A. Operating temperature range of -40°C ~ 125°C covers the original specification. Physical dimensions are larger (0.512" x 0.512" x 0.287"), requiring PCB layout verification. Product status is active. This part is suitable for applications requiring enhanced current handling and reduced losses.

P0751.682NLT (Pulse Electronics)

This substitute meets all primary matching criteria with a current rating of 4.4 A, marginally below the original 4.5 A. DC resistance of 44 mOhm is significantly higher than the original 23 mOhm, increasing power dissipation by approximately 91%. Operating temperature range of -40°C ~ 130°C exceeds the original specification. Physical dimensions are nearly identical (0.510" x 0.370" x 0.215"). Product status is active. This part is acceptable only for applications where increased DC resistance does not compromise thermal or efficiency requirements.

SDR1005-6R8ML (Bourns Inc.)

This substitute has a current rating of 3.4 A, which is below the original 4.5 A specification. DC resistance of 30 mOhm exceeds the original 23 mOhm. Operating temperature range of -40°C ~ 125°C covers the original specification. Physical dimensions are comparable (0.500" x 0.394" x 0.197"). Product status is active. This part is not recommended for direct substitution due to insufficient current rating and elevated DC resistance.

Frequently Asked Questions (FAQ)

Q: Can I use SDR1005-6R8ML as a direct replacement for CDR95NP-6R8MC?

A: No. The SDR1005-6R8ML has a current rating of 3.4 A, which is below the original 4.5 A specification. Using this part in an application requiring 4.5 A operation will cause the inductor to operate beyond its rated current, resulting in saturation and potential thermal failure.

Q: What is the primary advantage of B82476B1682M100 over the original CDR95NP-6R8MC?

A: The B82476B1682M100 offers three key advantages: (1) higher current rating of 4.8 A versus 4.5 A, providing 6.7% additional margin; (2) lower DC resistance of 21 mOhm versus 23 mOhm, reducing power dissipation by approximately 8.7%; (3) extended operating temperature range to 150°C versus 100°C, and AEC-Q200 automotive qualification for enhanced reliability.

Q: Why does P0751.682NLT have higher DC resistance than the original part?

A: DC resistance in wirewound inductors is determined by wire gauge, wire length, and material properties. The P0751.682NLT uses a different wire configuration to achieve the same 6.8 µH inductance value, resulting in higher resistance. This is a design trade-off inherent to the part's construction.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All four substitute parts listed are ROHS3 compliant and maintain MSL 1 (Unlimited) moisture sensitivity level, matching the original CDR95NP-6R8MC specifications.

Q: What is the physical size difference between SDR1307-6R8ML and the original part?

A: The SDR1307-6R8ML is larger: 0.512" L x 0.512" W x 0.287" H compared to the original 0.508" L x 0.370" W x 0.205" H. The footprint increases from 12.90mm x 9.40mm to 13.00mm x 13.00mm, and height increases from 5.20mm to 7.30mm. PCB layout verification is required before substitution.

Q: Which substitute part has the lowest DC resistance?

A: The SDR1307-6R8ML has the lowest DC resistance at 17 mOhm maximum, compared to 23 mOhm for the original part. This represents a 26% reduction in resistance, resulting in lower power dissipation and improved efficiency.

Q: Can I use multiple substitute parts interchangeably in the same design?

A: No. Each substitute part has different electrical and physical characteristics. Once a specific substitute is selected and validated for your application, it should be used consistently. Changing between substitutes requires re-evaluation of thermal performance, current handling, and PCB layout compatibility.

Q: What does "Inductance Frequency - Test" mean?

A: This parameter indicates the frequency at which the inductance value was measured. The original CDR95NP-6R8MC and most substitutes were tested at 100 kHz, except SDR1005-6R8ML which was tested at 1 kHz. Inductance values can vary slightly at different frequencies due to core material properties.