CMLB063T-4R7MS Equivalent & Substitute Parts

Part Overview

The CMLB063T-4R7MS is a 4.7 µH shielded inductor manufactured by Delta Electronics/Cyntec, rated for 6 A continuous current with a maximum DC resistance of 33 mOhm. 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 725 units in stock. Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting application requirements.

Key Parameters

Parameter	Value	Unit
Inductance	4.7	µH
Inductance Tolerance	±20%	-
Current Rating	6	A
DC Resistance (Max)	33	mOhm
Shielding	Shielded	-
Operating Temperature Range	-55 to 125	°C
Mounting Type	Surface Mount	-
Package	Nonstandard	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the CMLB063T-4R7MS is determined by the following critical parameters:

Electrical Equivalence Criteria:

Inductance value: 4.7 µH (within ±20% tolerance)
Inductance test frequency: 100 kHz
DC resistance: must not exceed 33 mOhm maximum
Current rating: minimum 6 A continuous
Shielding: shielded construction required

Mechanical & Environmental Criteria:

Mounting type: surface mount
Package type: nonstandard
Operating temperature range: must cover -55°C to 125°C or be compatible with application limits
Moisture sensitivity: MSL 1 (unlimited)

Compliance Criteria:

RoHS3 compliance required
REACH unaffected status

The PA4341.472NLT meets the electrical equivalence criteria with matching inductance and shielding. However, the substitute exhibits a higher DC resistance (40 mOhm vs. 33 mOhm maximum) and lower continuous current rating (5.5 A vs. 6 A). These differences must be evaluated against specific application thermal and current requirements.

Parameter Comparison

Parameter	CMLB063T-4R7MS	PA4341.472NLT	Difference / Notes
Manufacturer	Delta Electronics/Cyntec	Pulse Electronics	-
Inductance	4.7 µH	4.7 µH	Equivalent
Inductance Tolerance	±20%	±20%	Equivalent
Current Rating (Continuous)	6 A	5.5 A	Substitute rated 0.5 A lower
Current - Saturation (Isat)	5.5 A	10 A	Substitute has higher saturation current
DC Resistance (Max)	33 mOhm	40 mOhm	Substitute 7 mOhm higher
Shielding	Shielded	Shielded	Equivalent
Operating Temperature Range	-55 to 125°C	-40 to 125°C	Substitute limited to -40°C minimum
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	Nonstandard	Nonstandard	Equivalent
Size / Dimension	6.95 x 6.60 mm	7.60 x 6.90 mm	Substitute slightly larger
Height - Seated (Max)	3.00 mm	3.00 mm	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
Product Status	Active	Active	Both in production

Engineering Selection Recommendations

Primary Part (CMLB063T-4R7MS): Use as the first choice when the application requires the full 6 A continuous current rating and operates at temperatures below -40°C. The lower DC resistance (33 mOhm) provides reduced power dissipation in high-current applications.

Substitute Part (PA4341.472NLT): The PA4341.472NLT is suitable as an alternative when:

Application current requirements do not exceed 5.5 A continuous
Operating temperature range is limited to -40°C to 125°C
The additional 7 mOhm DC resistance is acceptable for thermal budget calculations
Slightly larger footprint (7.60 x 6.90 mm vs. 6.95 x 6.60 mm) is accommodated in PCB layout

Both parts maintain ROHS3 compliance and MSL 1 rating. The substitute includes AEC-Q200 automotive qualification, which may provide additional reliability assurance for certain applications.

Frequently Asked Questions (FAQ)

Q: Can PA4341.472NLT replace CMLB063T-4R7MS in all applications?

A: No. The substitute is rated for 5.5 A continuous current versus 6 A for the primary part. Applications requiring the full 6 A rating must use CMLB063T-4R7MS. Additionally, the substitute's minimum operating temperature is -40°C, limiting use in applications below this threshold.

Q: What is the impact of the 7 mOhm higher DC resistance in PA4341.472NLT?

A: At 6 A, the additional resistance increases power dissipation by approximately 0.252 W (7 mOhm × 6² A). At the substitute's rated 5.5 A, dissipation increases by approximately 0.211 W. Thermal analysis is required if the application operates near thermal limits.

Q: Are the physical dimensions compatible?

A: Both parts have identical height (3.00 mm maximum seated height). The substitute is slightly larger in length and width (7.60 x 6.90 mm vs. 6.95 x 6.60 mm). PCB layout must be verified to confirm adequate clearance.

Q: Do both parts meet compliance requirements?

A: Yes. Both CMLB063T-4R7MS and PA4341.472NLT are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating. The substitute includes AEC-Q200 automotive qualification.

Q: What is the difference in saturation current?

A: CMLB063T-4R7MS saturates at 5.5 A, while PA4341.472NLT saturates at 10 A. The substitute provides greater margin before inductance degradation occurs at high currents.

Q: Can I use PA4341.472NLT in applications requiring -55°C operation?

A: No. PA4341.472NLT is rated only to -40°C minimum. CMLB063T-4R7MS must be used for applications requiring operation below -40°C.

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