CMLB053T-3R3MS Equivalent & Substitute Parts

Part Overview

The CMLB053T-3R3MS is a 3.3 µH shielded inductor manufactured by Delta Electronics/Cyntec, rated for 5.4 A continuous current with a maximum DC resistance of 38mOhm. This surface mount component operates across the industrial temperature range of -55°C to 125°C and is ROHS3 compliant. The part is currently active in production with 744 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current rating category.

Substiute Parts

CMLB053T-3R3MS

Delta Electronics/CyntecIn Stock: 773CMLB053T-3R3MS Datasheet

Current PartRFQ

PA4340.332NLT

Pulse ElectronicsIn Stock: 3962PA4340.332NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The PA4340.332NLT qualifies as a substitute for the CMLB053T-3R3MS based on the following critical parameters:

Inductance equivalence: Both parts specify 3.3 µH at ±20% tolerance, measured at 100 kHz test frequency.

DC resistance matching: Both parts maintain a maximum DC resistance of 38mOhm, ensuring equivalent power dissipation characteristics.

Current rating compatibility: The PA4340.332NLT is rated for 5 A continuous current, which falls within the operational envelope of the CMLB053T-3R3MS at 5.4 A. The PA4340.332NLT exhibits a higher saturation current (8 A vs. 5 A), providing additional margin.

Shielding configuration: Both parts are shielded inductors, maintaining electromagnetic isolation requirements.

Surface mount compatibility: Both components use surface mount technology with nonstandard package dimensions.

Temperature range consideration: The PA4340.332NLT operates from -40°C to 125°C, which covers the upper portion of the CMLB053T-3R3MS range (-55°C to 125°C). Applications requiring the full -55°C lower limit must verify thermal performance.

Regulatory compliance: Both parts are ROHS3 compliant and REACH unaffected.

Parameter Comparison

Engineering Selection Recommendations

Both the CMLB053T-3R3MS and PA4340.332NLT are active production components with ROHS3 compliance and REACH unaffected status, suitable for current industrial applications.

The CMLB053T-3R3MS is the primary choice when the full operating temperature range of -55°C to 125°C is required, particularly for applications in extreme cold environments.

The PA4340.332NLT serves as a functional substitute when operating temperatures remain above -40°C. This part offers higher saturation current (8 A vs. 5 A), providing additional thermal margin in current-limited applications. The PA4340.332NLT is available in higher inventory (3866 units vs. 744 units), supporting supply chain continuity.

Physical dimensions differ between the two parts. The PA4340.332NLT is larger (6.00mm L x 5.40mm W vs. 4.85mm L x 4.70mm W). PCB layout verification is required to confirm mechanical fit within the available mounting space.

Both parts maintain identical DC resistance (38mOhm max) and inductance specifications (3.3 µH ±20%), ensuring equivalent electrical performance in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can PA4340.332NLT replace CMLB053T-3R3MS in all applications?

A: The PA4340.332NLT is electrically equivalent for inductance, DC resistance, and shielding characteristics. However, two constraints apply: the operating temperature range is limited to -40°C to 125°C (vs. -55°C to 125°C), and the physical footprint is larger. Verify both temperature requirements and PCB layout compatibility before substitution.

Q: What is the significance of the different saturation current ratings?

A: The CMLB053T-3R3MS has a saturation current of 5 A, while the PA4340.332NLT is rated at 8 A. Both parts are rated for continuous operation at or below their respective current ratings (5.4 A and 5 A). The higher saturation current in the PA4340.332NLT indicates greater inductance stability under transient overcurrent conditions, but this does not change the continuous current rating limit.

Q: Are the physical dimension differences critical?

A: Yes. The PA4340.332NLT measures 6.00mm L x 5.40mm W compared to 4.85mm L x 4.70mm W for the CMLB053T-3R3MS. Both maintain the same height (3.00mm max). PCB layout must accommodate the larger footprint. If space constraints exist, the CMLB053T-3R3MS is the only option.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the CMLB053T-3R3MS and PA4340.332NLT are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity). Both are classified under ECCN EAR99 for export purposes.

Q: What is the inductance tolerance, and does it affect substitution?

A: Both parts specify ±20% inductance tolerance at 100 kHz test frequency. This tolerance is identical and does not create substitution constraints. Circuit designs must account for this tolerance range in both the primary and substitute components.

Q: How do the different core materials affect performance?

A: The CMLB053T-3R3MS uses a metal core, while the PA4340.332NLT material core is not specified in the provided data. Both are shielded inductors with identical DC resistance and inductance specifications. Without additional material specifications for the PA4340.332NLT, electrical performance equivalence is confirmed through the matching inductance and resistance parameters.