CMLB063T-1R2MS Equivalent & Substitute Parts

Part Overview

The CMLB063T-1R2MS is a 1.2 µH shielded inductor manufactured by Delta Electronics/Cyntec, rated for 11.7 A continuous current with a maximum DC resistance of 8.6mOhm. This surface mount component is designed for applications requiring compact, high-current inductive filtering in power conversion and signal conditioning circuits. The part is currently active in production with 846 units in stock. Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting application requirements.

Substiute Parts

CMLB063T-1R2MS

Delta Electronics/CyntecIn Stock: 863CMLB063T-1R2MS Datasheet

Current PartRFQ

PA4341.122NLT

Pulse ElectronicsIn Stock: 11057PA4341.122NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMLB063T-1R2MS is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value of 1.2 µH within ±20% tolerance
• Continuous current rating of 10 A or greater (minimum 87% of original 11.7 A rating)
• Saturation current (Isat) of 12.5 A or greater
• DC resistance (DCR) not exceeding 12mOhm maximum
• Shielded construction to maintain EMI performance
• Inductance test frequency of 100 kHz

Mechanical & Environmental Criteria:

• Surface mount packaging
• Nonstandard package case compatible with PCB layout
• Physical dimensions within acceptable tolerance for board placement
• Height seated maximum of 3.00 mm or less
• Operating temperature range of -40°C to 125°C minimum
• RoHS3 compliance and MSL 1 rating

The PA4341.122NLT from Pulse Electronics meets these substitution criteria with equivalent inductance, shielding, and thermal performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The CMLB063T-1R2MS remains the preferred choice for applications requiring the full 11.7 A continuous current rating and the extended low-temperature operating range of -55°C. This part is actively manufactured and maintains RoHS3 compliance with unlimited moisture sensitivity rating.

Substitute Part Selection: The PA4341.122NLT from Pulse Electronics is suitable as a substitute when the following conditions are met:

• Continuous current requirement does not exceed 10 A
• Operating temperature minimum of -40°C is acceptable
• Increased DC resistance of 12mOhm (versus 8.6mOhm) does not create thermal or efficiency concerns
• Slightly larger footprint (7.60 × 6.90 mm versus 6.95 × 6.60 mm) is accommodated in PCB layout
• AEC-Q200 automotive qualification is beneficial for the application

Both parts maintain equivalent inductance value, shielding, saturation current performance, and regulatory compliance (RoHS3, MSL 1).

Frequently Asked Questions (FAQ)

Q: Can PA4341.122NLT replace CMLB063T-1R2MS in all applications?

A: No. The PA4341.122NLT is rated for 10 A continuous current versus 11.7 A for the original part. Substitution is valid only when the application current requirement does not exceed 10 A. Additionally, the operating temperature minimum is -40°C rather than -55°C, which may restrict use in extreme cold environments.

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

A: The PA4341.122NLT has a maximum DC resistance of 12mOhm compared to 8.6mOhm in the CMLB063T-1R2MS. This 40% increase results in higher resistive losses and heat generation at rated current. For applications sensitive to power dissipation or thermal management, this difference must be evaluated against system requirements.

Q: Are the physical dimensions compatible?

A: The substitute part is slightly larger: 7.60 × 6.90 mm versus 6.95 × 6.60 mm for the original. Both maintain the same 3.00 mm seated height. PCB layout must be verified to confirm the larger footprint does not create placement conflicts or spacing violations.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the CMLB063T-1R2MS and PA4341.122NLT are RoHS3 compliant with MSL 1 (unlimited moisture sensitivity). The PA4341.122NLT additionally carries AEC-Q200 automotive qualification, which may be advantageous for automotive or high-reliability applications.

Q: What is the saturation current difference, and does it matter?

A: The PA4341.122NLT has a saturation current (Isat) of 20 A versus 12.5 A for the original part. This indicates the substitute has greater margin before inductance degradation occurs. For applications operating below 12.5 A, this difference is not a limiting factor.

Q: Can I use the substitute in applications requiring -55°C operation?

A: No. The PA4341.122NLT is rated only to -40°C minimum. Applications requiring operation at -55°C must use the CMLB063T-1R2MS or identify an alternative substitute with equivalent low-temperature rating.