ELL-ATP120MB Equivalent & Substitute Parts

Part Overview

The ELL-ATP120MB is a 12 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 2.9 A with a DC resistance of 25mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. The part features nonstandard corner terminals and surface mount packaging in a 10.00mm x 10.00mm footprint.

Substiute Parts

ELL-ATP120MB

Panasonic Electronic ComponentsIn Stock: 769ELL-ATP120MB Datasheet

Current PartRFQ

SRR1050A-120Y

Bourns Inc.In Stock: 1224SRR1050A-120Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-ATP120MB is determined by the following critical parameters:

• Inductance Value: Must be 12 µH at 100 kHz test frequency
• Current Rating: Must meet or exceed 2.9 A nominal rating
• Shielding: Must be shielded construction
• Mounting Type: Must be surface mount
• Physical Footprint: Dimensions must be compatible with 10.00mm x 10.00mm PCB layout constraints
• Height Clearance: Maximum seated height must not exceed available board space (reference: 4.50mm)
• Regulatory Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The SRR1050A-120Y from Bourns Inc. meets these substitution criteria with enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SRR1050A-120Y is a direct functional substitute for the obsolete ELL-ATP120MB. Both components share identical inductance values at the specified test frequency and maintain equivalent shielding and surface mount characteristics. The Bourns part provides superior current handling capacity (3.8 A vs. 2.9 A) and saturation current (4A vs. 2.9A), offering design margin in applications requiring the original specification.

Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility. The SRR1050A-120Y carries active product status with AEC-Q200 automotive qualification, providing long-term availability and supply chain stability compared to the obsolete Panasonic part.

Physical dimensions are nearly identical, with the Bourns part measuring 10.20mm x 10.00mm versus 10.00mm x 10.00mm for the original. The height difference (5.10mm vs. 4.50mm) must be verified against available PCB clearance in the target application.

Frequently Asked Questions (FAQ)

Q: Can the SRR1050A-120Y directly replace the ELL-ATP120MB without circuit modification?

A: The SRR1050A-120Y meets the core electrical requirements of the ELL-ATP120MB at the specified 100 kHz test frequency. Physical footprint compatibility must be confirmed, particularly the 0.60mm increase in maximum seated height (5.10mm vs. 4.50mm). DC resistance is higher (35mOhm Max vs. 25mOhm), which may affect thermal performance in current-limited applications.

Q: What are the key differences in electrical performance?

A: The SRR1050A-120Y provides higher current rating (3.8 A vs. 2.9 A) and saturation current (4A vs. 2.9A). Inductance tolerance is wider (±30% vs. ±20%), and DC resistance is elevated by 10mOhm. These differences must be evaluated against circuit design margins and thermal constraints.

Q: Are both parts suitable for the same operating temperature range?

A: The SRR1050A-120Y specifies an operating temperature range of -40°C to 125°C. The ELL-ATP120MB does not provide an operating temperature specification in the available data. Thermal performance characteristics should be verified for the target application environment.

Q: What packaging format is available for the SRR1050A-120Y?

A: The SRR1050A-120Y is supplied in Tape & Reel (TR) format, whereas the original ELL-ATP120MB packaging format is not specified. Packaging compatibility with assembly equipment and procurement requirements must be confirmed.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant with MSL 1 rating. The SRR1050A-120Y carries AEC-Q200 automotive qualification, providing additional reliability assurance. The original part does not list equivalent certifications.