AML0618-4R4M7R2-S1 Equivalent & Substitute Parts

Part Overview

The AML0618-4R4M7R2-S1 is a 2-line common mode choke (CMC) manufactured by TDK Corporation, designed for power line filtering applications in through-hole configurations. This component is rated for 7.2A maximum current with a DC resistance of 14mOhm and operates across the temperature range of -40°C to 125°C. The part carries AEC-Q200 automotive qualification and is RoHS3 compliant.

This part is designated as "Not For New Designs," indicating it has been superseded in TDK's product portfolio. Organizations currently using this component in active applications require equivalent alternatives that maintain functional compatibility while meeting current design standards and availability requirements.

Substiute Parts

AML0618-4R4M7R2-S1

TDK CorporationIn Stock: 1145AML0618-4R4M7R2-S1 Datasheet

Current PartRFQ

AML0615-2R9M7R5-S1

TDK CorporationIn Stock: 1770AML0615-2R9M7R5-S1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AML0618-4R4M7R2-S1 is determined by the following critical parameters:

Functional Compatibility Criteria:

• Filter Type: Power Line
• Number of Lines: 2
• Mounting Type: Through Hole
• Package / Case: Radial, Horizontal Cylinder
• Operating Temperature Range: -40°C ~ 125°C
• Ratings: AEC-Q200
• RoHS Status: ROHS3 Compliant

Electrical Performance Criteria:

• Current Rating (Max): Must equal or exceed 7.2A
• DC Resistance (Max): Must not exceed 14mOhm

Physical Compatibility Criteria:

• Diameter: 0.236" (6.00mm) fixed
• Length: Must accommodate board layout constraints

The AML0615-2R9M7R5-S1 qualifies as a parametric equivalent because it maintains all functional compatibility criteria while providing improved electrical performance characteristics (7.5A current rating and 12mOhm DCR), ensuring direct functional replacement capability in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The AML0615-2R9M7R5-S1 serves as a direct functional substitute for the AML0618-4R4M7R2-S1 in power line common mode choke applications. Both components maintain identical compliance certifications (AEC-Q200 and RoHS3), ensuring regulatory and quality standards are preserved across design transitions.

The substitute part delivers enhanced electrical performance with a higher current rating (7.5A versus 7.2A) and lower DC resistance (12mOhm versus 14mOhm). These improvements provide additional design margin and reduced power dissipation in the filtering circuit.

The primary design consideration is the physical length difference: the substitute measures 0.591" (15.00mm) compared to the original 0.689" (17.50mm). This 2.5mm reduction in axial length requires verification of board layout compatibility, particularly in applications with constrained vertical spacing or specific component placement requirements.

Both components share identical radial, horizontal cylinder packaging and 6.00mm diameter specifications, ensuring footprint compatibility on through-hole PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the AML0615-2R9M7R5-S1 replace the AML0618-4R4M7R2-S1 in existing designs?

A: Yes. The substitute maintains all functional parameters required for power line common mode choke applications, including filter type, line configuration, mounting method, temperature range, and compliance certifications. The improved current rating and reduced DC resistance provide enhanced performance margins.

Q: What is the primary physical difference between these components?

A: The substitute part is 2.5mm shorter in axial length (15.00mm versus 17.50mm). Both components maintain the same 6.00mm radial diameter and through-hole mounting configuration. Board layout verification is necessary to confirm adequate clearance in the reduced-length dimension.

Q: Are both parts AEC-Q200 qualified?

A: Yes. Both the AML0618-4R4M7R2-S1 and AML0615-2R9M7R5-S1 carry AEC-Q200 automotive qualification ratings, ensuring compliance with automotive reliability and quality standards.

Q: What is the impact of the lower DC resistance in the substitute part?

A: The substitute's 12mOhm DC resistance (compared to 14mOhm in the original) results in reduced power dissipation across the component. This provides improved thermal performance and increased design margin in power line filtering circuits.

Q: Are both components RoHS3 compliant?

A: Yes. Both parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity levels, meeting environmental and regulatory requirements for current manufacturing standards.

Q: What is the current rating difference between these parts?

A: The substitute is rated for 7.5A maximum current compared to the original 7.2A rating. This 0.3A increase provides additional headroom for applications operating near the original component's current limit.