CMLB136T-330MS Equivalent & Substitute Parts

Part Overview

The CMLB136T-330MS is a 33 µH shielded inductor manufactured by Delta Electronics/Cyntec, rated for 5 A continuous current with a maximum DC resistance of 70 Ohm. This surface mount component is designed for applications requiring fixed inductance in compact form factors. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances for the intended application.

Substiute Parts

CMLB136T-330MS

Delta Electronics/CyntecIn Stock: 1087CMLB136T-330MS Datasheet

Current PartRFQ

PA4343.332NLT

Pulse ElectronicsIn Stock: 4750PA4343.332NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The PA4343.332NLT from Pulse Electronics is listed as a direct substitute for the CMLB136T-330MS. However, this substitution is not valid based on electrical parameter compatibility. The substitute part exhibits fundamentally different electrical characteristics:

The CMLB136T-330MS specifies 33 µH inductance, while PA4343.332NLT provides 3.3 µH inductance—a tenfold difference. This variance exceeds the ±20% tolerance band and represents a different functional category. Additionally, the substitute part is rated for 18 A continuous current with 6.8 mOhm DCR, compared to the main part's 5 A rating and 70 Ohm DCR. These parameters define distinct application requirements and cannot be considered interchangeable.

Substitution validity requires alignment in the following critical parameters:

• Inductance value within ±20% tolerance
• Current rating equal to or greater than the original specification
• DC resistance compatible with circuit design requirements
• Shielding type (both parts are shielded)
• Surface mount packaging compatibility

Parameter Comparison

Engineering Selection Recommendations

Based on the provided parameter data, the PA4343.332NLT cannot serve as a direct substitute for the CMLB136T-330MS due to critical inductance value mismatch (33 µH versus 3.3 µH). Both parts maintain active product status and ROHS3 compliance, but electrical incompatibility precludes interchangeability in circuit applications designed for the original specification.

For applications requiring the CMLB136T-330MS, component selection must prioritize inductance value as the primary matching criterion. Secondary parameters including current rating, DC resistance, and operating temperature range must align with circuit design requirements. When substitute parts are necessary, verification of inductance value within the ±20% tolerance band is mandatory before implementation.

Frequently Asked Questions (FAQ)

Q: Can PA4343.332NLT replace CMLB136T-330MS in my circuit?

A: No. The PA4343.332NLT provides 3.3 µH inductance while the CMLB136T-330MS is specified at 33 µH. This tenfold difference exceeds tolerance limits and represents incompatible electrical performance for circuits designed around the original part specification.

Q: What makes two inductors substitutable?

A: Inductance value must fall within ±20% of the original specification. Current rating of the substitute must equal or exceed the original rating. DC resistance must be compatible with circuit design parameters. Both parts must share the same mounting type and shielding configuration.

Q: Does the higher current rating of PA4343.332NLT make it suitable?

A: Higher current rating alone does not establish substitutability. The inductance value mismatch (3.3 µH versus 33 µH) is a fundamental incompatibility that cannot be overcome by superior current handling capability. Inductance value determines circuit frequency response and filtering characteristics.

Q: Are both parts RoHS compliant?

A: Yes. Both CMLB136T-330MS and PA4343.332NLT are ROHS3 compliant with MSL rating of 1 (Unlimited). Compliance status is equivalent between the two parts.

Q: What is the operating temperature difference between these parts?

A: CMLB136T-330MS operates from -55°C to 125°C, while PA4343.332NLT operates from -40°C to 125°C. The substitute part has a narrower low-temperature range, which may be a limiting factor for applications requiring extended cold-temperature performance.