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Low-Profile SMD Power Choke Metal Dust Core Cyntec Power Inductor CMLB CMMB Series for DC/DC Notebook CPU Server1

Features

High performance (Isat) realized by metal dust core.

Low profile: 4.45 x 4.75 x 1.2mm; 5.4 x 5.75 x 1.2mm; 4.9 x 5.2 x 3.0mm; 6.8 x 7.4 x 1.8mm; 6.8 x 7.3 x 2.4mm; 6.8 x 7.3 x 3.0mm; 8.3 x 8.6 x 4.0mm; 10.3 x 11.5 x 3.0mm; 10.3 x 11.5 x 4.0mm; 12.8 x 13.8 x 5.0mm.

Low loss realized with low DCR

Capable of corresponding high frequency (1MHz)

100% lead (Pb) free meet RoHS standard

Application:

DC/DC converter for CPU in Notebook PC

Thin type on-board power supply module for exchanger

VRM for server

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Product Specification

Cyntec P/N	Size (mm)	L0 Inductance (uH)	DCR (mOhm)		Heat rating current, Idc (A)		Saturation current, Isat (A)		Package
Cyntec P/N	Size (mm)	L0 Inductance (uH)	Typical	Max.	Typical	Max.	Typical	Max.	Package
CMLB041B-R47MS	4.45 x 4.75 x 1.2	0.47	17.5	19.6	6.4	5.7	7.4	6.7	3,000 pcs/reel
CMLB041B-R68MS	4.45 x 4.75 x 1.2	0.68	31	36	5.5	5	7.3	6.5
CMLB041B-1R0MS	4.45 x 4.75 x 1.2	1	42	46.5	5	4.3	5.5	5
CMLB041B-4R7MS	4.45 x 4.75 x 1.2	4.7	171	193	2	1.8	2.8	2.2
CMLB042T-R10MS	4.45 x 4.75 x 2.0	0.1	3.3	3.8	12.3	11	23	20	2,000 pcs/reel
CMLB042T-R22MS	4.45 x 4.75 x 2.0	0.22	6	6.6	9	8	15	13
CMLB042T-R33MS	4.45 x 4.75 x 2.0	0.33	8.5	10	8	7	12	10
CMLB042T-R47MS	4.45 x 4.75 x 2.0	0.47	12.5	14	7	6	11	9.5
CMLB042T-R56MS	4.45 x 4.75 x 2.0	0.56	13.5	16	6.7	6	10.5	9
CMLB042T-R68MS	4.45 x 4.75 x 2.0	0.68	15.9	18	6	5.4	9.2	7.5
CMLB042T-1R0MS	4.45 x 4.75 x 2.0	1	23	27	4.5	4	7.5	6
CMLB042T-1R5MS	4.45 x 4.75 x 2.0	1.5	37	46	4.1	3.7	6.2	5.4
CMLB042T-2R2MS	4.45 x 4.75 x 2.0	2.2	51	58	3.5	3.2	5.2	4.4
CMLB042T-4R7MS	4.45 x 4.75 x 2.0	4.7	91	105	2.7	2.4	4.1	3.2
CMLB051B-R47MS	5.4 x 5.75 x 1.2	0.47	19	22	6.9	6.2	10	8.6	3,000 pcs/reel
CMLB051B-R68MS	5.4 x 5.75 x 1.2	0.68	22	26	6.6	5.9	8.9	7.6
CMLB051B-1R0MS	5.4 x 5.75 x 1.2	1	32	36.5	5.5	5.1	8.7	7.4
CMLB051B-1R5MS	5.4 x 5.75 x 1.2	1.5	50	58	4.5	4	6	5
CMLB051B-2R2MS	5.4 x 5.75 x 1.2	2.2	66	76	3.9	3.5	4.7	4.1
CMLB051B-3R3MS	5.4 x 5.75 x 1.2	3.3	84	96	3.5	3.2	4.1	3.5
CMLB051B-4R7MS	5.4 x 5.75 x 1.2	4.7	144	163	2.3	2	3.5	2.9
CMLB051H-R22MS	5.4 x 5.75 x 1.8	0.22	4	4.8	19	17	21.5	19	3,000 pcs/reel
CMLB051H-R33MS	5.4 x 5.75 x 1.8	0.33	5.7	6.8	16	15	19.1	17.1
CMLB051H-R47MS	5.4 x 5.75 x 1.8	0.47	7.6	8.5	11	10	16	15.5
CMLB051H-R68MS	5.4 x 5.75 x 1.8	0.68	12	13.8	9	8	13	11.2
CMLB051H-1R0MS	5.4 x 5.75 x 1.8	1	15	17	8.5	7.5	10	8.6
CMLB051H-1R5MS	5.4 x 5.75 x 1.8	1.5	23	28	6.2	5.5	9	7.2
CMLB051H-2R2MS	5.4 x 5.75 x 1.8	2.2	30	35	5.2	4.7	7	6
CMLB051H-3R3MS	5.4 x 5.75 x 1.8	3.3	45	52	4.7	4.5	5.5	4.8
CMLB051H-4R7MS	5.4 x 5.75 x 1.8	4.7	70	81	3.5	3.2	4.5	3.9
CMLB051H-6R8MS	5.4 x 5.75 x 1.8	6.8	103	125	2.9	2.6	3.6	3.4
CMLB051H-100MS	5.4 x 5.75 x 1.8	10	139	154	2.5	2.3	3.3	2.8
CMLB053T-R12MS	4.9 x 5.2 x 3.0	0.12	2.2	2.6	26	23	32	27	1,000 pcs/reel
CMLB053T-R15MS	4.9 x 5.2 x 3.0	0.15	2.7	3.1	24	21	25	22
CMLB053T-R20MS	4.9 x 5.2 x 3.0	0.2	3.3	3.8	18	16	20	17
CMLB053T-R22MS	4.9 x 5.2 x 3.0	0.22	3.5	3.9	17	15	20	17
CMLB053T-R33MS	4.9 x 5.2 x 3.0	0.33	5.1	6.1	14.2	12.5	15.5	13.5
CMLB053T-R47MS	4.9 x 5.2 x 3.0	0.47	7	8	12.2	10.9	14	12
CMLB053T-R56MS	4.9 x 5.2 x 3.0	0.56	7.5	8.5	11.5	10.3	12.5	10.5
CMLB053T-R68MS	4.9 x 5.2 x 3.0	0.68	8	9.2	11	9.9	11.5	10
CMLB053T-1R0MS	4.9 x 5.2 x 3.0	1	10.5	12	9.8	8.5	10	8.5
CMLB053T-1R5MS	4.9 x 5.2 x 3.0	1.5	17	20	7.8	7	8.6	8
CMLB053T-2R2MS	4.9 x 5.2 x 3.0	2.2	25	29	6.3	5.5	8	6.5
CMLB053T-3R3MS	4.9 x 5.2 x 3.0	3.3	34	38	5.4	4.7	6	5
CMLB053T-4R7MS	4.9 x 5.2 x 3.0	4.7	52	60	5	4.5	5	3.5
CMLB053T-6R8MS	4.9 x 5.2 x 3.0	6.8	100	115	3.2	2.8	3.7	3.2
CMLB061H-R22MS	6.8 x 7.4 x 1.8	0.22	4.3	4.9	18	16	29	25	1,000 pcs/reel
CMLB061H-R47MS	6.8 x 7.4 x 1.8	0.47	7.1	8.2	12.5	11.5	19	16
CMLB061H-R56MS	6.8 x 7.4 x 1.8	0.56	8.9	10.4	9.6	8.6	15.5	13
CMLB061H-1R5MS	6.8 x 7.4 x 1.8	1.5	20	26	6.5	6	10	8.5
CMLB061H-2R2MS	6.8 x 7.4 x 1.8	2.2	25	28.5	6	5.5	7.3	6.5
CMLB061H-3R3MS	6.8 x 7.4 x 1.8	3.3	42	49	4.7	4.5	6.1	5.2
CMLB061H-4R7MS	6.8 x 7.4 x 1.8	4.7	58	66	3.9	3.5	5.5	5
CMLB061H-6R8MS	6.8 x 7.4 x 1.8	6.8	98	109	2.9	2.7	3.9	3.5
CMLB061H-100MS	6.8 x 7.4 x 1.8	10	138	153	2.5	2.3	3.5	3
CMLB062D-R15MS	6.8 x 7.3 x 2.4	0.15	2.2	2.5	25	22	45	39	1,000 pcs/reel
CMLB062D-R47MS	6.8 x 7.3 x 2.4	0.47	4.7	5.4	15	13.5	25	22
CMLB062D-1R0MS	6.8 x 7.3 x 2.4	1	10.5	13.5	9.3	8.3	16.5	14
CMLB062D-1R5MS	6.8 x 7.3 x 2.4	1.5	15.5	17.8	7.8	7.1	12	10.3
CMLB062D-2R2MS	6.8 x 7.3 x 2.4	2.2	17.5	20.6	7.5	7.1	9	7.7
CMLB062D-4R7MS	6.8 x 7.3 x 2.4	4.7	40.7	49	5	4.2	6.8	5.8
CMLB062D-100MS	6.8 x 7.3 x 2.4	10	85	97.5	3.5	3.1	4.5	4
CMLB063T-R10MS	6.8 x 7.3 x 3.0	0.1	0.81	0.99	40	35	60.2	48	1,000 pcs/reel
CMLB063T-R15MS	6.8 x 7.3 x 3.0	0.15	1.8	2.4	30	25	41	35
CMLB063T-R33MS	6.8 x 7.3 x 3.0	0.33	2.7	3.3	22	20	26	22
CMLB063T-R36MS	6.8 x 7.3 x 3.0	0.36	3.2	3.8	20	18	24.5	22
CMLB063T-R47MS	6.8 x 7.3 x 3.0	0.47	3.48	4.1	18	16	21	17.8
CMLB063T-R56MS	6.8 x 7.3 x 3.0	0.56	3.88	4.5	16.5	15	20	16
CMLB063T-R68MS	6.8 x 7.3 x 3.0	0.68	4.75	5.3	16	14.5	19	15
CMLB063T-R82MS	6.8 x 7.3 x 3.0	0.82	5.38	6	14	13	17	14
CMLB063T-1R0MS	6.8 x 7.3 x 3.0	1	6.6	7.25	13	11.2	16.5	13.5
CMLB063T-1R2MS	6.8 x 7.3 x 3.0	1.2	7.7	8.6	11.7	10.1	14.5	12.5
CMLB063T-1R5MS	6.8 x 7.3 x 3.0	1.5	9.1	10.5	11	9.5	14.2	12
CMLB063T-2R2MS	6.8 x 7.3 x 3.0	2.2	13.4	15	8.5	8	12.5	10.5
CMLB063T-3R3MS	6.8 x 7.3 x 3.0	3.3	17.9	22	7.2	6.2	9.6	8.5
CMLB063T-4R7MS	6.8 x 7.3 x 3.0	4.7	27.9	33	6	5.5	6.6	5.5
CMLB063T-5R6MS	6.8 x 7.3 x 3.0	5.6	39	42	5.7	5	6.4	5.1
CMLB063T-6R8MS	6.8 x 7.3 x 3.0	6.8	42	48	4.7	4.2	6.3	5
CMLB063T-8R2MS	6.8 x 7.3 x 3.0	8.2	53.9	60	4.5	3.8	6.1	4.9
CMLB063T-100MS	6.8 x 7.3 x 3.0	10	60	68	4	3.5	5.6	4.9
CMLB063T-150MS	6.8 x 7.3 x 3.0	15	132.5	150	2.7	2.4	3.8	3.3
CMLB063T-220MS	6.8 x 7.3 x 3.0	22	179.5	200	2.3	2	3.1	2.5
CMLB063T-330MS	6.8 x 7.3 x 3.0	33	274	284	2.1	1.8	2.3	2
CMLB065T-1R0MS	6.8 x 7.4 x 5.0	1	5.5	6.4	13.2	12.5	16.8	14.5	500 pcs/reel
CMLB065T-1R5MS	6.8 x 7.4 x 5.0	1.5	6	7.5	12.3	11.2	12.7	11
CMLB065T-2R2MS	6.8 x 7.4 x 5.0	2.2	10.2	11.8	11	9.9	12.1	10
CMLB065T-3R3MS	6.8 x 7.4 x 5.0	3.3	16.5	18.5	9	8.5	9	8.1
CMLB065T-4R7MS	6.8 x 7.4 x 5.0	4.7	21	24	6.7	6	8	7
CMLB065T-5R6MS	6.8 x 7.4 x 5.0	5.6	30	36	6	5.4	7.7	6.7
CMLB065T-6R8MS	6.8 x 7.4 x 5.0	6.8	36	40	5.5	5	7.3	6.5
CMLB065T-100MS	6.8 x 7.4 x 5.0	10	47.1	54	4.7	4.3	5.3	4.7
CMLB084T-4R7MS	8.3 x 8.6 x 4.0	4.7	20.8	22.5	8.2	7.3	12.6	10.8	500 pcs/reel
CMLB084T-6R8MS	8.3 x 8.6 x 4.0	6.8	29	35	6.5	6	9.2	7.7	500 pcs/reel
CMLB103T-R15MS	10.3 x 11.5 x 3.0	0.15	0.72	0.84	43	39	63	53	500 pcs/reel
CMLB103T-R22MS	10.3 x 11.5 x 3.0	0.22	1	1.15	36	32	60	50
CMLB103T-1R0MS	10.3 x 11.2 x 3.0	1	5.2	6	15	13.5	23	20
CMLB103T-1R5MS	10.3 x 11.2 x 3.0	1.5	6.5	7.5	13.5	12.2	20	16
CMLB103T-2R2MS	10.3 x 11.2 x 3.0	2.2	7.7	8.9	13.2	12	16.2	13.7
CMLB103T-4R7MS	10.3 x 11.2 x 3.0	4.7	20	23.2	7	6.3	13.5	11.6
CMLB104T-R15MS	10.3 x 11.5 x 4.0	0.15	0.45	0.55	50	45	76	64	500 pcs/reel
CMLB104T-R22MS	10.3 x 11.5 x 4.0	0.22	0.82	0.93	36	32	63	60
CMLB104T-R36MS	10.3 x 11.5 x 4.0	0.36	1.05	1.18	33	29	51	42
CMLB104T-R47MS	10.3 x 11.5 x 4.0	0.47	1.3	1.5	32	28	46	40
CMLB104T-R56MS	10.3 x 11.5 x 4.0	0.56	1.59	1.8	25	23	33.5	28
CMLB104T-1R0MS	10.3 x 11.5 x 4.0	1	2.85	3.3	19	17	29	26
CMLB104T-1R5MS	10.3 x 11.5 x 4.0	1.5	3.8	4.2	16	15	22	18
CMLB104T-2R2MS	10.3 x 11.2 x 4.0	2.2	6	7	12	11	20	16
CMLB104T-3R3MS	10.3 x 11.2 x 4.0	3.3	10.5	12	10	9	16.2	13.5
CMLB104T-4R7MS	10.3 x 11.2 x 4.0	4.7	16.8	20	8.5	7.6	15.2	13
CMLB104T-6R8MS	10.3 x 11.2 x 4.0	6.8	22	24.5	7.8	6.5	12	9.5
CMLB104T-8R2MS	10.3 x 11.2 x 4.0	8.2	24	26.5	7.6	6.2	9	8
CMLB104T-100MS	10.3 x 11.2 x 4.0	10	27	30	7.5	5.8	8.6	7.2
CMLB104T-150MS	10.3 x 11.2 x 4.0	15	39.5	45	6.3	5	8	6.9
CMLB104T-220MS	10.3 x 11.2 x 4.0	22	59	66	5	4	6.2	5.4
CMLB104T-330MS	10.3 x 11.2 x 4.0	33	84	91	4.4	3.5	5.5	5
CMLB104T-470MS	10.3 x 11.2 x 4.0	47	129	143	3.3	2.8	4	3.7
CMLB135T-R47MS	12.8 x 13.8 x 5.0	0.47	0.9	1.05	38.5	34.2	55	47.4	500 pcs/reel
CMLB135T-R82MS	12.8 x 13.8 x 5.0	0.82	1.45	1.65	34.2	30.2	42	39
CMLB135T-1R0MS	12.8 x 13.8 x 5.0	1	1.8	2.2	30	27	36	32.5
CMLB135T-2R2MS	12.8 x 13.8 x 5.0	2.2	3.98	5	20.5	19	25	22
CMLB135T-3R3MS	12.8 x 13.8 x 5.0	3.3	5.5	7	15.5	14	22.5	19.5
CMLB135T-4R7MS	12.8 x 13.8 x 5.0	4.7	8.5	10.3	13	11.5	17.2	14.5
CMLB135T-6R8MS	12.8 x 13.8 x 5.0	6.8	13	15	11.5	10	15	12
CMLB135T-100MS	12.8 x 13.8 x 5.0	10	18.9	22	9	8.1	13	10.5
CMLB135T-150MS	12.8 x 13.8 x 5.0	15	30	35	7	6.3	8	6.8
CMLB136T-8R2MS	12.8 x 13.8 x 6.0	8.2	13.5	16	11	10	16	13.5	500 pcs/reel
CMLB136T-100MS	12.8 x 13.8 x 6.0	10	17.7	20.7	10	9.5	13.5	11.5
CMLB136T-150MS	12.8 x 13.8 x 6.0	15	24	27.5	8	7	10	9
CMLB136T-220MS	12.8 x 13.8 x 6.0	22	33	39	7	6.5	7.6	6.9
CMLB136T-330MS	12.8 x 13.8 x 6.0	33	60	70	5	4.7	6.1	5.4
CMLB136T-470MS	12.8 x 13.8 x 6.0	47	78	88	4.5	4	5.7	5.2
CMLB136T-680MS	12.8 x 13.8 x 6.0	68	119.5	140	3.5	3	5.5	4.7
CMLB136T-101MS	12.8 x 13.8 x 6.0	100	178	198	3	2.7	4	3.5
CMLB136T-151MS	12.8 x 13.8 x 6.0	150	300	347	2.5	2.2	3	2.7
CMLB177T-2R2MS	17.15 x 17.5 x 7.0	2.2	2.1	2.5	37	30	38	33	200 pcs/reel
CMLB177T-3R3MS	17.15 x 17.5 x 7.0	3.3	3.4	3.95	29	26	30	26
CMLB177T-4R7MS	17.15 x 17.5 x 7.0	4.7	4	4.6	27	24	28	24
CMLB177T-6R8MS	17.15 x 17.5 x 7.0	6.8	6.5	7.5	21	19	25	22
CMLB177T-8R2MS	17.15 x 17.5 x 7.0	8.2	8	8.6	16	15	22	20
CMLB177T-100MS	17.15 x 17.5 x 7.0	10	9.2	9.9	14	13	20	18.5
CMLB177T-150MS	17.15 x 17.5 x 7.0	15	13.8	15.3	12	11	15.5	13.5
CMLB177T-220MS	17.15 x 17.5 x 7.0	22	20	23	9.7	8.7	12	10.5
CMLB177T-330MS	17.15 x 17.5 x 7.0	33	32	37	9.2	8	10.5	8.6
CMLB177T-470MS	17.15 x 17.5 x 7.0	47	40	47	6.8	6	8.5	7.5

KEY FEATURES

Molded metal-alloy dust core — high saturation current in a compact, shielded body.
Wide inductance range — 0.1 µH to 150 µH across the series.
Ultra-low DCR — down to 0.45 mΩ (CMLB103T / CMLB104T class).
High saturation current — up to 76 A Isat @ 25 °C.
Low-profile options — 1.2 mm class (CMLB041B / CMLB051B).
Magnetically shielded, molded body — low EMI, no audible coil whine, SMT-reflow robust.
Single-phase VR type — for VRM and DC/DC output stages.
100 % Pb-free, RoHS-compliant.
Design support — parametric search, power-loss calculator, power/ESL curves, SPICE models.

q & a

Who is Cyntec, and who makes the CMLB series?

Cyntec Co., Ltd. is a Taiwan-based manufacturer of power magnetics, power modules, transformers, EMC components and current-sensing products. The CMLB power choke series is designed and produced in-house by Cyntec — metal-alloy dust core, molded body and winding are all made under its own process, and the parts ship under the Cyntec brand with full lot traceability.

Is the CMLB series RoHS-compliant and lead-free?

Yes. CMLB parts are 100 % lead-free and RoHS-compliant, as declared on the individual Cyntec datasheets. Body and terminal materials meet current RoHS substance limits, so the parts can be designed into end products sold into the EU, China and other RoHS-regulated markets. REACH and halogen-free declarations are available on request.

Why choose the CMLB series over a generic power inductor?

Three reasons show up in the data. Scale: 128 values across 12 footprints means one supplier covers a 4.75 mm notebook choke and a 17.5 mm 100 µH high-current choke with the same core technology. Performance: DCR goes as low as 0.45 mΩ and Isat reaches 76 A @ 25 °C, which directly improves VRM efficiency and thermals. Support: Cyntec publishes power-loss calculators, ESL curves and SPICE models so you can simulate before you build.

Which CMLB parts suit AI server, notebook and wearable designs?

For AI server and switch VRM rails, the low-DCR, high-current members fit best — CMLB104T (0.15–47 µH, DCR from 0.45 mΩ, Isat to 76 A) and CMLB063T (23 values, DCR from 0.81 mΩ). For slim notebooks and 1U/2U enclosures, the 1.2 mm class — CMLB041B and CMLB051B — keeps height down. For smartphones and wearables, the small-footprint 1.2–1.8 mm parts (CMLB041B, CMLB051B/H) match the space budget.

Can Cyntec supply custom inductance values or a variant of the CMLB series?

Yes. Cyntec's datasheets state, "If you require another part number please contact with us," and the power-magnetics team can extend the CMLB family with custom inductance, adjusted DCR/Isat targets, or modified land patterns inside an existing footprint. Lead time and MOQ depend on the spec.

Where can I purchase genuine Cyntec components?

As a Cyntec authorized distributor, we provide genuine Cyntec components with technical support, including product selection, specification matching, sample assistance, and supply chain services. Our team helps customers find suitable Cyntec solutions for AI servers, EV electronics, energy storage, and industrial power applications.