CMLB063T-R68MS Equivalent & Substitute Parts

Part Overview

The CMLB063T-R68MS is a 680 nH shielded inductor manufactured by Delta Electronics/Cyntec, rated for 16 A continuous current with a maximum DC resistance of 5.3 mOhm. This surface mount component is designed for high-current applications requiring low DC resistance and electromagnetic shielding. The part is currently in active production status with 1099 units available in inventory. Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting application requirements.

Substiute Parts

CMLB063T-R68MS

Delta Electronics/CyntecIn Stock: 1183CMLB063T-R68MS Datasheet

Current PartRFQ

PA4341.681NLT

Pulse ElectronicsIn Stock: 5915PA4341.681NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMLB063T-R68MS is determined by the following critical parameters:

• Inductance value must be 680 nH with ±20% tolerance
• Shielding requirement must be maintained (shielded construction)
• Surface mount packaging and tape & reel delivery format
• DC resistance must not exceed 5.3 mOhm to ensure thermal performance equivalence
• Current rating must support minimum 16 A continuous operation
• RoHS3 compliance and REACH unaffected status required

The PA4341.681NLT from Pulse Electronics meets these substitution criteria. Both parts share identical inductance specifications, equivalent DC resistance characteristics within acceptable limits, and compatible physical dimensions for the same mounting footprint.

Parameter Comparison

Engineering Selection Recommendations

Both the CMLB063T-R68MS and PA4341.681NLT are active production components with full RoHS3 compliance and REACH unaffected status, ensuring regulatory compliance for current and future applications. The PA4341.681NLT carries AEC-Q200 automotive qualification, providing additional reliability assurance for demanding environments.

The primary distinction between these parts is the current rating differential: the CMLB063T-R68MS is rated for 16 A while the PA4341.681NLT is rated for 15.5 A. Applications operating at or near the 16 A maximum should retain the original CMLB063T-R68MS specification. For applications operating below 15.5 A, the PA4341.681NLT provides equivalent electrical performance with superior saturation current margin (25 A versus 15 A).

The DC resistance values are functionally equivalent (5.3 mOhm versus 5.5 mOhm), with negligible thermal impact in typical circuit implementations. Physical dimensions differ slightly, with the PA4341.681NLT occupying marginally larger board space; PCB layout verification is necessary when substituting in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can PA4341.681NLT replace CMLB063T-R68MS in all applications?

A: Substitution is valid for applications where the continuous current requirement does not exceed 15.5 A. Applications requiring the full 16 A rating must use the original CMLB063T-R68MS specification.

Q: What is the impact of the 0.2 mOhm DC resistance difference?

A: The difference between 5.3 mOhm and 5.5 mOhm represents a 3.8% increase in DC resistance. Power dissipation impact is proportional to I²R; at 15 A, this translates to approximately 0.15 W additional dissipation, which is negligible in most applications.

Q: Are the physical dimensions compatible with the same PCB footprint?

A: Both parts share identical height (3.00 mm) and are classified as nonstandard packages. The PA4341.681NLT is slightly larger in length and width (7.60mm x 6.90mm versus 6.95mm x 6.60mm). PCB layout must accommodate the larger footprint dimensions.

Q: What is the significance of AEC-Q200 qualification on the PA4341.681NLT?

A: AEC-Q200 is an automotive industry standard for passive component reliability. This qualification indicates the PA4341.681NLT has undergone rigorous testing for automotive applications, providing additional confidence in long-term reliability for high-reliability systems.

Q: Do both parts require identical handling and storage procedures?

A: Both parts have MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control is required during storage or handling. Standard ESD precautions for surface mount components apply to both parts.

Q: What is the operating temperature range consideration for substitution?

A: The CMLB063T-R68MS operates from -55°C to 125°C, while the PA4341.681NLT operates from -40°C to 125°C. Applications requiring operation below -40°C must use the original CMLB063T-R68MS specification.