CDR74BNP-680LC Equivalent & Substitute Parts

Part Overview

The CDR74BNP-680LC is a 68 µH shielded inductor manufactured by Sumida America Components Inc., rated for 680 mA continuous current with a maximum DC resistance of 330mOhm. This component is classified as obsolete product status. Due to its obsolete designation, locating equivalent or substitute inductors with compatible electrical and mechanical specifications is necessary for ongoing design support, production continuity, and system maintenance applications.

Substiute Parts

CDR74BNP-680LC

Sumida America Components Inc.In Stock: 848CDR74BNP-680LC Datasheet

Current PartRFQ

CDRH74NP-680MC-B

Sumida America Components Inc.In Stock: 16529CDRH74NP-680MC-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR74BNP-680LC is determined by the following critical parameters:

Primary Electrical Compatibility Criteria:

• Inductance value: 68 µH (exact match required)
• Core material: Ferrite (maintains electromagnetic performance characteristics)
• Shielding: Shielded (required for EMI containment)
• Current rating: Minimum 680 mA (substitute must support or exceed this value)
• DC resistance: Maximum 330mOhm (substitute DCR must not significantly exceed this threshold to maintain circuit performance)

Mechanical Compatibility Criteria:

• Mounting type: Surface Mount (PCB assembly compatibility)
• Package classification: Nonstandard (dimensional constraints apply)

Regulatory & Environmental Criteria:

• RoHS3 compliance (environmental and regulatory alignment)
• Moisture sensitivity level: 1 (Unlimited) (handling and storage compatibility)

The CDRH74NP-680MC-B meets these substitution criteria with compatible electrical specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The CDRH74NP-680MC-B is a suitable substitute for the obsolete CDR74BNP-680LC based on the following engineering factors:

Electrical Compatibility: Both components share identical 68 µH inductance values with ferrite core construction and shielded design. The substitute's current rating of 690 mA exceeds the main part's 680 mA specification, providing adequate margin. The DC resistance increase from 330mOhm to 380mOhm represents a 15% variance, which is within acceptable engineering tolerance for most inductor applications.

Regulatory Compliance: Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring equivalent environmental and regulatory alignment for production and deployment.

Product Availability: The substitute part maintains active product status with 16,446 units in stock, compared to the obsolete main part with 808 units. This availability differential supports long-term design continuity and supply chain reliability.

Mechanical Considerations: Dimensional differences exist between the two components. The substitute is slightly smaller in length and width (7.30mm x 7.30mm versus 7.80mm x 7.00mm) and lower in height (4.50mm versus 4.90mm). PCB layout verification is required to confirm footprint compatibility within the target application.

Packaging: The substitute is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the CDRH74NP-680MC-B directly replace the CDR74BNP-680LC without circuit modification?

A: Electrical substitution is feasible based on matching inductance, core material, shielding, and current rating specifications. However, PCB layout verification is mandatory due to dimensional differences. The substitute's smaller footprint may require minor PCB layout adjustments.

Q: What is the significance of the DC resistance difference between the two parts?

A: The main part specifies 330mOhm maximum DCR, while the substitute specifies 380mOhm maximum. This 50mOhm difference represents approximately 15% variance. For most inductor applications, this variance is acceptable and will not significantly impact circuit performance. Applications with strict power dissipation or thermal requirements should evaluate this parameter against specific design constraints.

Q: Does the wider inductance tolerance of the substitute part affect circuit performance?

A: The main part specifies ±15% tolerance, while the substitute specifies ±20% tolerance. The wider tolerance of the substitute is acceptable for applications where inductance variation within ±20% does not compromise circuit function. For precision-dependent applications, component selection and testing may be necessary.

Q: Are there any thermal operating range considerations?

A: The main part operates from -25°C to 80°C, while the substitute operates from -40°C to 100°C. The substitute's extended temperature range provides greater operational flexibility and is compatible with the main part's specified range. No thermal derating is required for equivalent operating conditions.

Q: What packaging format is the substitute supplied in?

A: The CDRH74NP-680MC-B is supplied in Tape & Reel (TR) format, which is standard for automated surface mount assembly. The main part packaging format is not specified in the provided data.

Q: Are both parts RoHS compliant?

A: Yes, both the CDR74BNP-680LC and CDRH74NP-680MC-B are ROHS3 compliant, ensuring equivalent environmental and regulatory alignment for production applications.