CDR95NP-680MC Equivalent & Substitute Parts

Part Overview

The CDR95NP-680MC is a 68 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc., rated for 1.3 A continuous current with a maximum DC resistance of 208 mOhm. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement continuity. The part operates across the temperature range of -40°C to 100°C and complies with ROHS3 standards.

Substiute Parts

CDR95NP-680MC

Sumida America Components Inc.In Stock: 836CDR95NP-680MC Datasheet

Current PartRFQ

P0751.683NLT

Pulse ElectronicsIn Stock: 1669P0751.683NLT Datasheet

DirectRFQ

SDR1005-680KL

Bourns Inc.In Stock: 1926SDR1005-680KL Datasheet

DirectRFQ

B82476B1683M100

EPCOS - TDK ElectronicsIn Stock: 1390B82476B1683M100 Datasheet

SimilarRFQ

SDR1305-680M

Bourns Inc.In Stock: 5272SDR1305-680M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR95NP-680MC is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 68 µH (fixed requirement)
• Inductance tolerance: ±20% (acceptable range)
• Shielding configuration: Unshielded (electromagnetic environment requirement)
• Mounting type: Surface Mount (PCB assembly compatibility)
• Operating temperature range: Minimum -40°C to 100°C coverage
• RoHS3 compliance: Required for regulatory alignment

Secondary Compatibility Factors:

• Current rating: Minimum 1.3 A continuous
• DC resistance: Maximum 208 mOhm preferred, higher values acceptable with thermal analysis
• Core material: Ferrite drum core preferred for form factor consistency
• Package dimensions: Nonstandard form factor with height ≤ 5.20mm seated maximum

The substitute parts are grouped into two categories:

Direct Equivalents: Parts meeting all primary criteria with minimal parameter deviation.

Similar Alternatives: Parts meeting primary criteria with acceptable variations in secondary parameters, suitable for applications with relaxed thermal or current margin requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The P0751.683NLT (Pulse Electronics) and SDR1005-680KL (Bourns Inc.) are classified as direct equivalents. Both parts maintain the 68 µH inductance specification, unshielded configuration, and surface mount assembly compatibility. P0751.683NLT offers a 1.4 A current rating with extended temperature range to 130°C, while SDR1005-680KL provides tighter inductance tolerance (±10%) and ferrite drum core construction matching the original design. Both are active products with ROHS3 compliance and unlimited moisture sensitivity rating.

For Applications Requiring Enhanced Performance:

The B82476B1683M100 (EPCOS - TDK Electronics) and SDR1305-680M (Bourns Inc.) are classified as similar alternatives. These parts provide higher current ratings (1.65 A) and lower DC resistance values (160-165 mOhm versus 208 mOhm), resulting in reduced thermal dissipation. The B82476B1683M100 includes AEC-Q200 automotive qualification and operates to 150°C, suitable for extended temperature applications. The SDR1305-680M offers the highest inventory availability (5254 pcs) and ferrite drum core construction with measured Q factor data.

Dimensional Considerations:

All substitute parts maintain nonstandard package form factors compatible with the original CDR95NP-680MC footprint. The SDR1005-680KL presents the smallest seated height (5.00mm) for space-constrained layouts. The SDR1305-680M features a larger width dimension (12.70mm x 12.70mm) and requires PCB layout verification before selection.

Compliance and Regulatory:

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols. No additional environmental or regulatory constraints apply to substitution decisions.

Frequently Asked Questions (FAQ)

Q: Can the P0751.683NLT replace the CDR95NP-680MC in all applications?

A: The P0751.683NLT meets the primary electrical specifications (68 µH, ±20% tolerance, 1.4 A rating, unshielded) and maintains surface mount compatibility. The core material is not specified in the P0751.683NLT datasheet, whereas the original uses ferrite. Applications sensitive to core material properties require verification. The extended temperature range to 130°C provides additional operational margin.

Q: What is the difference between "Direct" and "Similar" substitute classifications?

A: Direct equivalents (P0751.683NLT, SDR1005-680KL) match all primary substitution criteria with minimal parameter deviation. Similar alternatives (B82476B1683M100, SDR1305-680M) meet primary criteria but include secondary parameter variations such as higher current ratings or lower DC resistance. Similar alternatives are suitable for applications with relaxed constraints or where enhanced performance is beneficial.

Q: Does the SDR1005-680KL's ±10% inductance tolerance provide an advantage over the ±20% specification?

A: The SDR1005-680KL's tighter tolerance reduces inductance variation across the production range, beneficial for applications requiring precise frequency response or impedance matching. However, the original CDR95NP-680MC specification allows ±20%, so the tighter tolerance does not represent a functional requirement for direct replacement. The advantage applies only to designs where inductance precision is critical.

Q: Are there PCB layout considerations when substituting to the SDR1305-680M?

A: The SDR1305-680M footprint is 12.70mm x 12.70mm, compared to the original 12.90mm x 9.40mm. The increased width dimension requires verification that the PCB layout accommodates the larger footprint without trace routing conflicts or component clearance violations. Height remains compatible at 5.10mm seated maximum.

Q: Which substitute part offers the lowest thermal dissipation?

A: The B82476B1683M100 provides the lowest DC resistance at 160 mOhm maximum, resulting in the lowest I²R power dissipation at rated current. The SDR1305-680M follows closely at 165 mOhm maximum. Both parts reduce thermal dissipation compared to the original 208 mOhm specification, with the B82476B1683M100 offering approximately 23% improvement.

Q: Is the AEC-Q200 rating on the B82476B1683M100 relevant for non-automotive applications?

A: AEC-Q200 qualification indicates enhanced reliability testing and quality assurance beyond standard industrial requirements. For non-automotive applications, this certification provides additional confidence in component reliability but is not a functional requirement for direct replacement. The certification does not restrict use in non-automotive designs.

Q: What inventory considerations apply to substitute part selection?

A: The SDR1305-680M offers the highest inventory availability at 5254 pcs, followed by SDR1005-680KL at 1852 pcs and P0751.683NLT at 1595 pcs. The B82476B1683M100 maintains 1363 pcs in stock. For applications requiring immediate procurement, the SDR1305-680M provides the shortest lead time and supply chain stability.

Q: Can multiple substitute parts be used interchangeably within the same design revision?

A: All substitute parts maintain the same 68 µH inductance and unshielded configuration, supporting interchangeable use from an electrical standpoint. However, the dimensional variations (particularly the SDR1305-680M width) require PCB layout verification to ensure all variants fit the same footprint. Design documentation should specify acceptable part numbers to prevent assembly errors.