CDR74BNP-820LC Equivalent & Substitute Parts

Part Overview

The CDR74BNP-820LC is an 82 µH shielded inductor manufactured by Sumida America Components Inc., rated for 620 mA continuous current with a maximum DC resistance of 430 mOhm. This component features a ferrite core, surface mount construction, and operates across the temperature range of -25°C to 80°C. The part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design support and procurement continuity.

Substiute Parts

CDR74BNP-820LC

Sumida America Components Inc.In Stock: 956CDR74BNP-820LC Datasheet

Current PartRFQ

CDRH74NP-820MC-B

Sumida America Components Inc.In Stock: 808CDRH74NP-820MC-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR74BNP-820LC is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Inductance value: 82 µH (exact match required)
• Core material: Ferrite (shielded construction)
• Mounting type: Surface Mount
• DC Resistance: 430 mOhm Max (maximum allowable)
• Shielding: Shielded configuration

Secondary Compatibility Factors:

• Current rating: Minimum 610 mA (substitute must support circuit current demands)
• Operating temperature range: Must encompass or exceed -25°C to 80°C
• RoHS3 compliance: Required for regulatory alignment
• Moisture sensitivity: MSL 1 classification

The CDRH74NP-820MC-B qualifies as a direct substitute based on matching inductance, core material, shielding, DCR specification, and RoHS compliance. Tolerance variation (±20% vs. ±15%) and current rating reduction (610 mA vs. 620 mA) are within acceptable substitution parameters for this component category.

Parameter Comparison

Engineering Selection Recommendations

The CDRH74NP-820MC-B is the qualified substitute for the obsolete CDR74BNP-820LC based on the following engineering criteria:

Electrical Equivalence: Both components maintain identical inductance values (82 µH) and DC resistance specifications (430 mOhm Max), ensuring functional compatibility in circuit applications. The substitute's wider operating temperature range (-40°C to 100°C) provides extended environmental coverage compared to the original part (-25°C to 80°C).

Regulatory Compliance: Both parts maintain ROHS3 compliance and MSL 1 moisture sensitivity classification, satisfying procurement and environmental requirements.

Product Status Advantage: The substitute part is classified as Active, ensuring long-term availability and supply chain continuity, whereas the original part is Obsolete.

Physical Considerations: The substitute exhibits reduced footprint dimensions (7.30mm x 7.30mm vs. 7.80mm x 7.00mm) and lower profile height (4.50mm vs. 4.90mm), which may require PCB layout verification for mechanical clearance.

Current Rating: The substitute current rating of 610 mA is 10 mA lower than the original 620 mA specification. Circuit designs operating at or near 620 mA maximum current must be evaluated for thermal margin impact.

Frequently Asked Questions (FAQ)

Q: Can the CDRH74NP-820MC-B directly replace the CDR74BNP-820LC without circuit modification?

A: The substitute part maintains electrical equivalence in inductance value and DC resistance. However, PCB layout verification is required due to dimensional differences. The reduced current rating (610 mA vs. 620 mA) must be confirmed against actual circuit current demands.

Q: What is the significance of the inductance tolerance difference (±15% vs. ±20%)?

A: The substitute part exhibits wider tolerance (±20%), which may impact circuit performance in applications with tight inductance specifications. Circuit designs must accommodate the broader tolerance band of the substitute component.

Q: Are there packaging differences between the main part and substitute?

A: Yes. The CDR74BNP-820LC uses nonstandard packaging, while the CDRH74NP-820MC-B is supplied in Tape & Reel (TR) format. This affects procurement, handling, and assembly processes.

Q: Does the extended operating temperature range of the substitute affect compatibility?

A: The substitute's wider temperature range (-40°C to 100°C) is a superset of the original specification (-25°C to 80°C), providing enhanced environmental coverage without compatibility concerns for applications within the original temperature band.

Q: What is the impact of the smaller physical dimensions of the substitute part?

A: The substitute's reduced footprint (7.30mm x 7.30mm vs. 7.80mm x 7.00mm) and lower height (4.50mm vs. 4.90mm) may allow for improved PCB layout density. However, mechanical clearance and thermal management considerations must be verified during design integration.

Q: Is the substitute part suitable for high-reliability applications?

A: Both components maintain ROHS3 compliance and MSL 1 classification. The substitute's Active product status ensures ongoing manufacturer support and supply availability, which is advantageous for long-term reliability requirements compared to the Obsolete original part.