CDRH124NP-8R2MC Equivalent & Substitute Parts

Part Overview

The CDRH124NP-8R2MC is an 8.2 µH shielded inductor manufactured by Sumida America Components Inc., designed for surface mount applications requiring fixed inductance with moderate current handling. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this inductor category.

Substiute Parts

CDRH124NP-8R2MC

Sumida America Components Inc.In Stock: 1049CDRH124NP-8R2MC Datasheet

Current PartRFQ

SRR1240-8R2M

Bourns Inc.In Stock: 2279SRR1240-8R2M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDRH124NP-8R2MC is determined by the following critical parameters:

Primary Electrical Criteria:

• Inductance value: 8.2 µH (within ±20% tolerance band)
• Current rating: minimum 4.5 A (acceptable reduction from 4.6 A within operational margin)
• DC resistance: maximum 27 mOhm (acceptable increase from 26 mOhm within thermal margin)
• Shielding: Shielded configuration required
• Core material: Ferrite

Mechanical Criteria:

• Mounting type: Surface Mount
• Package classification: Nonstandard
• Height compatibility: 4.50 mm seated height

Compliance Criteria:

• RoHS3 compliance required
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part SRR1240-8R2M meets all primary electrical criteria, maintains shielded ferrite core construction, and satisfies mechanical and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

CDRH124NP-8R2MC (Primary Selection):

• Active product status with 1027 units in stock
• ROHS3 compliant
• Specified operating temperature range: -40°C to 100°C
• Established supply chain availability

SRR1240-8R2M (Substitute Selection):

• Active product status with 2174 units in stock
• ROHS3 compliant with REACH Unaffected designation
• Extended operating temperature range: -40°C to 125°C
• Higher inventory availability
• Acceptable parameter variance: current rating 4.5 A (0.1 A reduction), DCR 27 mOhm (1 mOhm increase)

Both parts maintain identical inductance, tolerance, shielding, core material, mounting type, and seated height. Selection between these parts depends on application temperature requirements and supply chain priorities. The SRR1240-8R2M provides extended thermal operating range and higher stock availability.

Frequently Asked Questions (FAQ)

Q: Can SRR1240-8R2M replace CDRH124NP-8R2MC in all applications?

A: SRR1240-8R2M is compatible for applications operating within -40°C to 100°C. For applications requiring operation above 100°C, the extended temperature range of SRR1240-8R2M (up to 125°C) provides additional margin. Current rating reduction from 4.6 A to 4.5 A is acceptable for circuits designed to the lower specification.

Q: What is the impact of the 1 mOhm increase in DC resistance?

A: The DCR increase from 26 mOhm to 27 mOhm represents a 3.8% increase. This results in proportionally higher resistive losses in the inductor. For circuits with tight thermal or efficiency requirements, this parameter should be evaluated against application specifications.

Q: Are the physical dimensions compatible?

A: Both parts share identical seated height (4.50 mm). The CDRH124NP-8R2MC measures 12.00 mm × 12.00 mm, while SRR1240-8R2M measures 12.50 mm × 12.50 mm. PCB layout must accommodate the 0.50 mm increase in length and width for the substitute part.

Q: Do both parts have identical moisture sensitivity?

A: Yes. Both parts are classified as Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity precautions are required during storage or handling.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant. SRR1240-8R2M additionally carries REACH Unaffected designation. Both are classified under ECCN EAR99 for export control purposes.