CEI122NP-100MC Equivalent & Substitute Parts

Part Overview

The CEI122NP-100MC is a 10 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 3.8 A continuous current with a maximum DC resistance of 34.2mOhm. This component is classified as obsolete product status. Due to its obsolete classification, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure supply chain availability for applications requiring 10 µH inductance in a 12.50mm x 12.50mm nonstandard package footprint.

Substiute Parts

CEI122NP-100MC

Sumida America Components Inc.In Stock: 1022CEI122NP-100MC Datasheet

Current PartRFQ

DRA124-100-R

Eaton - Electronics DivisionIn Stock: 899DRA124-100-R Datasheet

SimilarRFQ

PM124SH-100M-RC

Bourns Inc.In Stock: 3265PM124SH-100M-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CEI122NP-100MC are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 10 µH (exact match)
• Inductance tolerance: ±20% (exact match)
• Current rating: minimum 3.67 A (meets or exceeds 3.8 A requirement)
• DC resistance: maximum 34.2mOhm (meets or exceeds performance)
• Shielding: Shielded construction required
• Mounting type: Surface Mount required
• Package footprint: 12.50mm x 12.50mm (exact match)
• Inductance test frequency: 100 kHz (exact match)
• RoHS compliance: ROHS3 Compliant required

Identified Substitute Parts:

1. DRA124-100-R (Eaton - Electronics Division)
2. PM124SH-100M-RC (Bourns Inc.)

Both substitute parts meet all primary electrical and mechanical criteria. Height differences exist but remain within acceptable nonstandard package classifications.

Parameter Comparison

Engineering Selection Recommendations

DRA124-100-R (Eaton - Electronics Division): This substitute is an active product with AEC-Q200 automotive qualification rating. The DRA124-100-R provides superior saturation current performance (6.16 A versus 3.4 A) and lower DC resistance (31mOhm versus 34.2mOhm maximum). Operating temperature range extends to 165°C, exceeding the main part specification. Height increases to 4.50mm, which may require PCB layout verification. This part is suitable for applications requiring extended temperature performance and higher saturation margins.

PM124SH-100M-RC (Bourns Inc.): This substitute is an active product with ferrite drum core construction. The PM124SH-100M-RC provides the highest current rating (4 A) and lowest DC resistance (32mOhm maximum) among available options. Operating temperature range is -40°C to 125°C. Documented Q factor (17 @ 2.52MHz) and self-resonant frequency (27MHz) are provided. Height increases to 4.50mm. This part is suitable for applications where ferrite core characteristics and documented frequency response are required.

Both substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Selection between substitutes depends on specific application requirements regarding temperature range, saturation performance, and core material characteristics.

Frequently Asked Questions (FAQ)

Q: Can DRA124-100-R or PM124SH-100M-RC be used as direct replacements for CEI122NP-100MC?

A: Both parts meet the core electrical specifications: 10 µH inductance at ±20% tolerance, current ratings at or above 3.8 A, and DC resistance at or below 34.2mOhm maximum. Both are shielded surface mount components with identical 12.50mm x 12.50mm footprints. However, height increases from 3.00mm to 4.50mm must be evaluated against PCB clearance constraints in your specific application.

Q: What is the significance of the height difference between the main part and substitutes?

A: The CEI122NP-100MC has a seated height of 3.00mm, while both DRA124-100-R and PM124SH-100M-RC have seated heights of 4.50mm. This 1.50mm increase may affect PCB layout, component spacing, and enclosure clearance. Verify that your application design accommodates this height increase before implementation.

Q: How do saturation current ratings affect component selection?

A: Saturation current (Isat) indicates the current level at which the inductor begins to lose inductance due to core saturation. The CEI122NP-100MC has Isat of 3.4 A, while DRA124-100-R provides 6.16 A and PM124SH-100M-RC provides 4 A. Higher saturation current provides greater margin above the continuous current rating and better performance under transient conditions.

Q: Are there temperature range considerations for substitution?

A: The main part does not specify operating temperature. DRA124-100-R operates from -40°C to 165°C, while PM124SH-100M-RC operates from -40°C to 125°C. If your application requires extended high-temperature operation, DRA124-100-R provides superior thermal performance. For standard industrial applications, both substitutes are acceptable.

Q: What is the difference between wirewound and drum core construction?

A: DRA124-100-R uses wirewound construction without specified core material. PM124SH-100M-RC uses drum core wirewound construction with ferrite core material. Ferrite cores typically provide better high-frequency performance and lower losses at elevated frequencies. Wirewound construction without ferrite may exhibit different frequency response characteristics. Select based on your application's frequency requirements.

Q: Do all parts maintain RoHS3 compliance?

A: Yes. CEI122NP-100MC, DRA124-100-R, and PM124SH-100M-RC are all ROHS3 compliant. All three parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: What packaging formats are available for the substitute parts?

A: Both DRA124-100-R and PM124SH-100M-RC are supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes. Verify that your procurement and assembly processes support this packaging format.

Q: How do DC resistance values compare across the three parts?

A: CEI122NP-100MC specifies 34.2mOhm maximum. DRA124-100-R provides 31mOhm (lower resistance, better efficiency). PM124SH-100M-RC provides 32mOhm maximum (lower resistance, better efficiency). Lower DC resistance reduces power dissipation and heat generation in the inductor during operation.