CEI122NP-130MC Equivalent & Substitute Parts

Part Overview

The CEI122NP-130MC is a 13 µH shielded inductor manufactured by Sumida America Components Inc., rated for 3.5 A continuous current with a maximum DC resistance of 38.4 mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part features surface mount packaging in a nonstandard 12.50mm × 12.50mm footprint with 3.00mm seated height, designed for applications requiring controlled inductance and low DC resistance characteristics at 100 kHz test frequency.

Substiute Parts

CEI122NP-130MC

Sumida America Components Inc.In Stock: 731CEI122NP-130MC Datasheet

Current PartRFQ

7447798131

Würth ElektronikIn Stock: 38967447798131 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CEI122NP-130MC is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

• Inductance value: 13 µH (±20% tolerance band)
• Inductance test frequency: 100 kHz
• Shielding requirement: Shielded construction
• Mounting type: Surface Mount
• RoHS compliance: ROHS3 Compliant

Secondary Compatibility Factors:

• Current rating must equal or exceed 3.5 A continuous
• DC resistance must not exceed 38.4 mOhm maximum
• Saturation current (Isat) must support application requirements
• Physical footprint and height must accommodate PCB layout constraints
• Moisture sensitivity level must be MSL 1 or equivalent

The substitute part 7447798131 (Würth Elektronik WE-PDF series) meets all primary matching criteria and demonstrates superior performance in current rating (5.85 A vs. 3.5 A) and DC resistance (22.5 mOhm vs. 38.4 mOhm maximum). However, physical dimensions differ, requiring PCB layout verification.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The 7447798131 (Würth Elektronik WE-PDF series) qualifies as a functional equivalent for the obsolete CEI122NP-130MC based on matching inductance value, tolerance, test frequency, shielding, mounting type, and regulatory compliance (ROHS3, MSL 1).

Performance Advantages:

The substitute part demonstrates improved electrical performance with 67% higher current rating (5.85 A vs. 3.5 A) and 41% lower DC resistance (22.5 mOhm vs. 38.4 mOhm maximum). These characteristics reduce thermal dissipation and provide enhanced design margin for current-limited applications.

Physical Compatibility Considerations:

The substitute part features a smaller footprint (10.20mm × 10.20mm vs. 12.50mm × 12.50mm), which may reduce PCB area requirements. However, the seated height increases from 3.00mm to 6.40mm, requiring verification of vertical clearance constraints in the target assembly.

Regulatory and Supply Status:

Both parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating. The substitute part is classified as active product status with confirmed inventory availability (3800 pcs), ensuring long-term supply continuity compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the 7447798131 directly replace the CEI122NP-130MC without circuit modification?

A: Electrical substitution is valid based on matching inductance (13 µH), tolerance (±20%), test frequency (100 kHz), and shielding characteristics. Physical PCB layout must be verified due to footprint differences (10.20mm vs. 12.50mm) and increased height (6.40mm vs. 3.00mm).

Q: What is the significance of the improved current rating (5.85 A vs. 3.5 A)?

A: The substitute part supports higher continuous current without saturation, providing design margin for applications approaching the original part's current limits. Saturation current also increases from 2.9 A to 4.5 A, reducing inductance degradation under peak current conditions.

Q: Does the lower DC resistance (22.5 mOhm vs. 38.4 mOhm) affect circuit performance?

A: Lower DC resistance reduces I²R losses and thermal dissipation. In current-limited applications, this improves efficiency and may reduce cooling requirements. Circuit behavior remains functionally equivalent at rated operating currents.

Q: Are there packaging or supply chain differences between these parts?

A: The substitute part is supplied in Tape & Reel (TR) packaging format, whereas the original part packaging format is not specified. Both parts maintain identical moisture sensitivity (MSL 1) and RoHS compliance status. The substitute part is active product with confirmed inventory availability.

Q: What PCB layout considerations apply to the height difference?

A: The substitute part's increased seated height (6.40mm vs. 3.00mm) requires verification of vertical clearance above the component. Confirm that adjacent components, shielding cans, or enclosure features do not create mechanical interference or thermal issues.

Q: Are the core materials compatible from an electromagnetic perspective?

A: The substitute part uses Nickel Zinc Ferrite (NiZn) drum core construction with wirewound topology. The original part's core material is not specified. Both parts achieve identical inductance and test frequency specifications, indicating electromagnetic compatibility for the intended application.