CMLB051H-1R5MS Equivalent & Substitute Parts

Part Overview

The CMLB051H-1R5MS is a 1.5 µH shielded inductor manufactured by Delta Electronics/Cyntec, rated for 6.2 A continuous current with a maximum DC resistance of 28mOhm. 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 777 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Inductance	1.5	µH
Inductance Tolerance	±20%	-
Current Rating	6.2	A
Saturation Current (Isat)	7.2	A
DC Resistance (DCR) Max	28	mOhm
Shielding	Shielded	-
Operating Temperature Range	-55 to 125	°C
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-
MSL Rating	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution eligibility for the CMLB051H-1R5MS is determined by the following critical parameters:

Electrical Equivalence Requirements:

Inductance value of 1.5 µH within ±20% tolerance
Shielded construction to maintain electromagnetic isolation
Operating temperature range of -55°C to 125°C minimum
ROHS3 compliance and REACH unaffected status

Mechanical Compatibility Considerations:

Surface mount package type
Physical dimensions and height constraints compatible with PCB layout
Nonstandard package classification

Performance Constraints:

Current rating must support the application's maximum continuous current requirement
DC resistance must not exceed specified limits for thermal and efficiency considerations
Saturation current rating must accommodate transient conditions

The PA4345.152NLT from Pulse Electronics meets these substitution criteria with equivalent inductance, shielding, temperature range, and compliance certifications.

Parameter Comparison

Parameter	CMLB051H-1R5MS (Main)	PA4345.152NLT (Substitute)	Compatibility
Manufacturer	Delta Electronics/Cyntec	Pulse Electronics	Different manufacturer
Inductance	1.5 µH	1.5 µH	Equivalent
Inductance Tolerance	±20%	±20%	Equivalent
Current Rating	6.2 A	5.5 A	Substitute rated lower
Saturation Current (Isat)	7.2 A	9.8 A	Substitute rated higher
DC Resistance (DCR) Max	28 mOhm	30.5 mOhm	Substitute slightly higher
Shielding	Shielded	Shielded	Equivalent
Operating Temperature	-55°C to 125°C	-55°C to 125°C	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
MSL Rating	1 (Unlimited)	1 (Unlimited)	Equivalent
Size / Dimension	5.40mm L x 5.20mm W	6.00mm L x 5.40mm W	Substitute slightly larger
Height - Seated (Max)	1.80 mm	2.00 mm	Substitute slightly taller

Engineering Selection Recommendations

Both the CMLB051H-1R5MS and PA4345.152NLT are active production components with ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial applications.

The PA4345.152NLT is suitable as a substitute when:

Application current requirements do not exceed 5.5 A continuous operation
PCB layout accommodates the slightly larger footprint (6.00mm L x 5.40mm W) and increased height (2.00mm)
The marginally higher DC resistance of 30.5mOhm is acceptable for the circuit design

The CMLB051H-1R5MS remains the preferred selection when:

Continuous current operation approaches or exceeds 5.5 A
PCB space constraints require the smaller footprint (5.40mm L x 5.20mm W)
Lower DC resistance of 28mOhm is critical for thermal performance

Frequently Asked Questions (FAQ)

Q: Can PA4345.152NLT replace CMLB051H-1R5MS in all applications?

A: No. The PA4345.152NLT has a lower continuous current rating of 5.5 A compared to 6.2 A for the CMLB051H-1R5MS. Substitution is valid only when the application's maximum continuous current does not exceed 5.5 A.

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

A: The PA4345.152NLT has a maximum DC resistance of 30.5mOhm versus 28mOhm for the main part. This 2.5mOhm difference results in increased resistive losses and heat generation. Thermal analysis is required if power dissipation is a design constraint.

Q: Are the physical dimension differences significant?

A: The PA4345.152NLT is slightly larger: 6.00mm L x 5.40mm W versus 5.40mm L x 5.20mm W, with a height of 2.00mm versus 1.80mm. PCB layout must accommodate these dimensions. Verify clearance with surrounding components and trace routing.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the CMLB051H-1R5MS and PA4345.152NLT are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). They meet equivalent regulatory requirements.

Q: What is the difference between the core materials?

A: The CMLB051H-1R5MS uses a metal core. The PA4345.152NLT is a molded inductor with core material not specified in the provided data. Both are shielded inductors suitable for EMI-sensitive applications.

Q: Can saturation current differences affect substitution?

A: The PA4345.152NLT has a higher saturation current of 9.8 A versus 7.2 A for the main part. This provides greater margin against saturation but does not change the continuous current rating limitation of 5.5 A.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message