CMLB053T-R68MS Equivalent & Substitute Parts

Part Overview

The CMLB053T-R68MS is a 680 nH shielded inductor manufactured by Delta Electronics/Cyntec, rated for 11 A continuous current with a maximum DC resistance of 9.2 mOhm. This surface mount component is designed for high-current applications requiring low DC resistance and electromagnetic shielding. The part maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent inductance values, current ratings, and shielding characteristics align within acceptable electrical and mechanical tolerances for the application category.

Substiute Parts

CMLB053T-R68MS

Delta Electronics/CyntecIn Stock: 1116CMLB053T-R68MS Datasheet

Current PartRFQ

PA4340.681NLT

Pulse ElectronicsIn Stock: 3220PA4340.681NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMLB053T-R68MS is determined by the following criteria:

Primary Electrical Parameters:

• Inductance value: 680 nH (±20% tolerance band)
• Shielding requirement: Shielded construction mandatory
• Inductance test frequency: 100 kHz

Current and Thermal Parameters:

• Continuous current rating must support application requirements
• Saturation current (Isat) must be adequate for peak transient conditions
• DC resistance must remain within acceptable limits for power dissipation calculations
• Operating temperature range must encompass application environment

Mechanical and Compliance Parameters:

• Surface mount packaging required
• RoHS3 compliance required
• Moisture sensitivity level MSL 1 acceptable

The PA4340.681NLT qualifies as a substitute based on matching inductance value (680 nH), identical tolerance (±20%), shielded construction, surface mount configuration, and equivalent compliance certifications. Differences in current ratings and DC resistance require application-level verification.

Parameter Comparison

Engineering Selection Recommendations

Both components maintain active product status and full RoHS3 compliance. The CMLB053T-R68MS provides superior continuous current capacity (11 A versus 8.5 A) and lower DC resistance (9.2 mOhm versus 12 mOhm), resulting in reduced thermal dissipation in high-current applications. The PA4340.681NLT offers higher saturation current (14 A versus 10 A) and extended lower temperature rating to -40°C.

Component selection depends on application current profile and thermal environment. Applications requiring sustained current above 8.5 A or operating below -40°C require the CMLB053T-R68MS. Applications with peak current demands exceeding 10 A saturation point may benefit from the PA4340.681NLT higher Isat rating. Both parts satisfy identical inductance, tolerance, shielding, and compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can PA4340.681NLT replace CMLB053T-R68MS in all applications?

A: Substitution is valid only when application continuous current does not exceed 8.5 A and minimum operating temperature remains above -40°C. The 680 nH inductance value and ±20% tolerance are identical. Verify DC resistance impact on thermal budget; PA4340.681NLT exhibits 2.8 mOhm higher resistance.

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

A: CMLB053T-R68MS saturates at 10 A; PA4340.681NLT saturates at 14 A. Saturation current defines the peak transient current threshold before inductance degrades. Applications with transient currents between 10 A and 14 A require the PA4340.681NLT to maintain inductance stability.

Q: Are the physical dimensions compatible?

A: Both components are surface mount with identical seated height (3.00 mm maximum). CMLB053T-R68MS footprint is 4.85 mm × 4.70 mm; PA4340.681NLT footprint is 6.00 mm × 5.40 mm. PCB layout and thermal management considerations may be affected by the larger PA4340.681NLT package.

Q: Do both parts meet automotive qualification standards?

A: CMLB053T-R68MS does not list automotive qualification. PA4340.681NLT carries AEC-Q200 automotive electronics qualification. Applications requiring automotive-grade components must use PA4340.681NLT.

Q: What is the impact of different DC resistance values on circuit performance?

A: DC resistance directly affects resistive losses and heat generation. CMLB053T-R68MS at 9.2 mOhm generates lower heat than PA4340.681NLT at 12 mOhm under identical current. At 11 A continuous current, the difference is approximately 0.52 W additional dissipation with PA4340.681NLT.