CDR74BNP-101KC Equivalent & Substitute Parts

Part Overview

The CDR74BNP-101KC is a 100 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 550 mA continuous current with a maximum DC resistance of 490mOhm. This component features a ferrite core, operates across the temperature range of -25°C to 80°C, and is classified as obsolete. Due to its obsolete product status and limited inventory availability, identifying equivalent substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

CDR74BNP-101KC

Sumida America Components Inc.In Stock: 979CDR74BNP-101KC Datasheet

Current PartRFQ

CDRH74NP-101MC-B

Sumida America Components Inc.In Stock: 220430CDRH74NP-101MC-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR74BNP-101KC is determined by the following critical parameters:

Inductance Value: Both the main part and substitute must maintain 100 µH at the 1 kHz test frequency to ensure circuit functionality.

Shielding Configuration: The shielded design is mandatory for electromagnetic interference control; only shielded inductors qualify as substitutes.

Core Material: Ferrite core construction must be maintained for consistent performance characteristics.

Mounting Technology: Surface mount configuration is required for PCB compatibility.

Current Handling Capability: The substitute must support the application's current requirements. The main part is rated for 550 mA; substitutes with equal or higher current ratings are acceptable.

DC Resistance: The substitute's DCR must not exceed the application's tolerance limits. Higher DCR values increase power dissipation and heat generation.

Temperature Range: The substitute's operating temperature range must encompass or exceed the main part's range to ensure reliability across all operating conditions.

Compliance Standards: RoHS3 compliance is required for regulatory adherence.

Parameter Comparison

Engineering Selection Recommendations

The CDRH74NP-101MC-B qualifies as a functional substitute for the CDR74BNP-101KC based on the following engineering criteria:

Inductance Equivalence: Both parts maintain 100 µH inductance at 1 kHz. The substitute's ±20% tolerance is wider than the main part's ±10%, which may impact circuit performance in applications with tight inductance specifications.

Current Capacity: The substitute's 600 mA rating exceeds the main part's 550 mA requirement, providing adequate headroom for the application.

DC Resistance Consideration: The substitute exhibits 610mOhm maximum DCR compared to the main part's 490mOhm. This 120mOhm increase results in higher power dissipation. Applications sensitive to resistive losses require thermal analysis to confirm acceptability.

Temperature Range Expansion: The substitute operates from -40°C to 100°C, extending beyond the main part's -25°C to 80°C range. This broader operating window enhances design flexibility for diverse environmental conditions.

Product Status and Availability: The main part is obsolete with limited inventory (878 pieces). The substitute is active with substantial stock (220,400 pieces), ensuring long-term supply chain reliability.

Compliance Alignment: Both parts maintain ROHS3 compliance and MSL Level 1 rating, satisfying regulatory and moisture handling requirements.

Physical Dimensions: The substitute is slightly smaller (7.30mm x 7.30mm versus 7.80mm x 7.00mm) and lower profile (4.50mm versus 4.90mm), potentially offering PCB layout advantages.

Frequently Asked Questions (FAQ)

Q: Can the CDRH74NP-101MC-B directly replace the CDR74BNP-101KC without circuit modification?

A: Direct replacement is possible if the application tolerates the substitute's wider inductance tolerance (±20% versus ±10%) and higher DC resistance (610mOhm versus 490mOhm). Circuits with strict inductance or low-loss requirements require performance validation.

Q: What is the impact of the 120mOhm increase in DC resistance?

A: At the rated 550 mA current, the additional resistance generates approximately 29.7 mW of additional power dissipation compared to the main part. Thermal management and component temperature rise must be evaluated for the specific application.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: The substitute is smaller in footprint and height. Existing PCB designs accommodate the smaller component without modification. However, verify that the nonstandard package dimensions align with your specific PCB pad layout.

Q: Does the extended temperature range of the substitute affect reliability?

A: The substitute's -40°C to 100°C range provides broader environmental coverage than the main part's -25°C to 80°C range. This expansion does not compromise reliability; it enhances operational flexibility across diverse temperature conditions.

Q: What is the significance of the inductance tolerance difference?

A: The main part specifies ±10% tolerance, while the substitute specifies ±20%. In applications where inductance precision directly affects circuit performance (resonant frequency, filter response), the wider tolerance may introduce unacceptable variation. Circuit simulation or empirical testing confirms acceptability.

Q: Is the substitute available in the same packaging format?

A: The main part packaging is not specified. The substitute is supplied in Tape & Reel (TR) format, which is standard for automated assembly. Verify compatibility with your procurement and assembly processes.

Q: Are both parts RoHS compliant?

A: Yes, both the CDR74BNP-101KC and CDRH74NP-101MC-B are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.