Litz Wire Types and Construction

Litz Wire Types and Construction

Round Litz

Litz construction Types 1 through 6 are all designed to be round and vary from a simple bunch of conductors (Type 1) to complex designs utilizing multiple cores and several manufacturing operations (Type 6).

The smaller constructions of Litz Types 1 and 2 are typically used in High Q circuitry, such as toroidal coils and transformers. The larger Type 2 and Type 3 Litz designs have greater current carrying capacities necessary for high frequency power supply, inverter and grounding applications. Type 4, 5 and 6 Litz constructions all utilize at least one inert core and are used primarily in tuning circuitry for high power radio transmitters.

Round Litz
Equivalent Gauge	Circular Mil Area	Number of Strands	Strand Gauge	Film Coating	Construction Type	Other Insulation	Nominal Outside Diameter	Nominal Lbs./MFT	Direct Current Resistance Ohms/MFT	Construction
Recommended operating frequency - 60 Hz to 1k Hz
24	476	3	28	S	1	-	0.027	1.49	22.5	3/28
22	794	5			1	-	0.035	2.48	13.5	5/28
20	1,112	7			1	-	0.042	3.47	9.62	7/28
18	1,588	10			1	-	0.050	5.02	6.74	10/28
16	2,700	17			1	SN	0.065	8.69	3.96	17/28
14	4,129	26			1	SN	0.080	13.3	2.59	26/28
12	6,670	42			1	SN	0.102	21.3	1.60	42/28
10	10,480	66			2	SN	0.140	34.5	1.05	3X22/28
8	16,674	105			2	SN	0.177	54.9	.657	3X35/28
6	26,202	165			2	SN	0.222	86.2	.418	5X3/28
4	42,240	266			2	DN	0.285	141.	.259	7X38/28
2	66,696	420			2	DN	0.431	228.	.168	5X3X28/28
1/0	105,602	665			2	SNB	0.537	366.	.106	7X5X19/28
2/0	133,392	840			5	SNB	0.657	480.	.084	6(5X28/28)
3/0	171,504	1,080			5	SNB	0.787	634.	.065	9(5X24/28)
4/0	217,238	1,368			5	SNB	0.941	828.	.051	12(3X38/28)
Recommended operating frequency - 1K Hz to 10k Hz
26	300	3	30	S	1	-	0.022	.95	35.8	3/30
24	500	5			1	-	0.028	1.58	21.5	5/30
22	700	7			1	-	0.033	2.22	15.4	7/30
20	1,100	11			1	-	0.045	3.58	9.76	11/30
18	1,700	17			1	SN	0.055	5.50	6.32	17/30
16	2,600	26			1	SN	0.064	8.38	4.13	26/30
14	4,200	42			1	SN	0.082	13.5	2.56	42/30
12	6,500	65			2	SN	0.112	21.4	1.69	5X13/30
10	11,000	110			2	SN	0.145	36.3	1.00	5X22/30
8	16,800	168		H	2	-	0.191	54.6	.655	7X24/30
7	25,900	259			2	-	0.237	84.1	.425	7X37/30
6	26,600	266			2	-	0.240	86.4	.413	7X38/30
4	41,300	413			2	-	0.300	134.	.266	7X59/30
3	52,500	525			2	-	0.338	171.	.209	7X75/30
2	66,500	665			2	-	0.380	216.	.165	7X95/30
2	80,500	805			2	DN	0.421	267.	.136	7X115/30
1/0	125,000	1,250		S	2	SNB	0.631	435.	.090	5X5X50/30
2/0	135,000	1,350			5	SNB	0.667	486.	.083	6(5X45/30)
3/0	195,000	1,950			5	SNB	0.794	697.	.057	6(5X5X13/30)
4/0	252,000	2,520			5	SNB	0.981	916.	.045	6(5X3X28/30)

Round Litz
Equivalent Gauge	Circular Mil Area	Number of Strands	Strand Gauge	Film Coating	Construction Type	Other Insulation	Nominal Outside Diameter	Nominal Lbs./MFT	Direct Current Resistance Ohms/MFT	Construction
Recommended operating frequency - 10k Hz to 20k Hz
26	303	6	33	S	1	SN	.025	1.01	35.8	6/33
24	403	8			1	-	.025	1.27	26.9	8/33
22	655	13			1	SN	.035	2.15	16.6	13/33
20	1,059	21			1	SN	.044	3.44	10.3	21/33
18	1,613	32			1	SN	.054	5.22	6.71	32/33
16	2,672	53			1	SN	.066	8.60	4.05	53/33
14	5,041	100			2	SN	.099	16.6	2.20	5X20/33
12	7,562	150			2	SN	.121	24.9	1.47	5X30/33
10	10,586	210			2	SN	.144	34.8	1.05	3X70/33
8	16,585	329			2	DN	.183	55.4	.669	7X47/33
6	26,465	525			2	DN	.230	90.4	.430	5X3X35/33
4	42,849	850			2	DN	.292	146.	.265	5X5X34/33
2	66,541	1,320			5	SNB	.484	244.	.171	6(5X44/33)
1	90,738	1,800			5	SNB	.558	334.	.127	6(3/5/20/33)
1/0	105,861	2,100			5	SNB	.600	383.	.107	6(5/70/33)
2/0	136,107	2,700			5	SNB	.675	496.	.084	6(5X3/30/33)
3/0	169,377	3,360			5	SNB	.850	651.	.067	12(5X56/33)
4/0	211,772	4,200			5	SNB	.987	841.	.054	14(5X3/20/33)
-	299,435	5,940			6	PVC	1.29	1255.	.038	6(6(5/33/33))
-	512,972	10,176			6	PVC	1.80	2283.	.022	8(6(4X53/33))
-	725,904	14,400			6	PVC	2.42	3550.	.016	15(6(5X32/33))
-	917,462	18,200			6	PVC	3.12	5088.	.012	20(13(70/33))
-	1,572,792	31,200			6	PVC	3.99	8684.	.007	20(6(5/52/33))
Recommended operating frequency - 20k Hz to 50k Hz
30	100	4	36	S	1	-	.013	.319	109.6	4/36
28	175	7			1	-	.017	.559	62.7	7/36
26	250	10			1	SN	.024	.846	43.9	10/36
24	400	16			1	SN	.029	1.34	27.4	16/36
22	675	27			1	SN	.037	2.24	16.3	27/36
20	1,025	41			1	SN	.045	3.37	10.7	41/36
18	1,625	65			2	SN	.061	5.46	6.91	5X13/36
16	2,625	105			2	SN	.073	8.78	4.26	3X35/36
14	4,125	165			2	SN	.091	13.8	2.72	5X33/36
12	6,625	265			2	SN	.116	22.1	1.70	5X53/36
10	10,500	420			2	DN	.149	36.4	1.10	5X3X28/36
8	16,500	660			2	DN	.186	57.2	.697	5X3X44/36
6	26,250	1,050			2	DN	.234	90.7	.438	5X5X42/36
4	45,000	1,800			2	DN	.305	155.	.255	5X5X72/36
2	66,500	2,660			2	DN	.370	228.	.173	7X5X76/36
1	84,000	3,360			5	SNB	.548	318.	.140	6(5X4X28/36)
1/0	108,000	4,320			5	SNB	.655	420.	.109	9(5X3X32/36)
2/0	135,000	5,400			5	SNB	.728	522.	.087	9(5X3X40/36)
3/0	171,000	6,840			5	SNB	.870	682.	.069	12(5x3x38/36)
4/0	211,500	8,460			5	SNB	.962	840.	.055	12(5x3x47/36)

Round Litz
Equivalent Gauge	Circular Mil Area	Number of Strands	Strand Gauge	Film Coating	Construction Type	Other Insulation	Nominal Outside Diameter	Nominal Lbs./MFT	Direct Current Resistance Ohms/MFT	Construction
Recommended operating frequency - 50k Hz to 100k Hz
30	112	7	38	S	1	SN	.017	.382	98.9	7/38
28	160	10			1	SN	.020	.538	69.3	10/38
26	256	16			1	SN	.024	.849	43.3	16/38
24	400	25			1	SN	.029	1.31	27.7	25/38
22	640	40			1	SN	.036	2.08	17.4	40/38
20	1,056	66			1	SN	.050	3.50	10.8	3/22/38
18	1,600	100			2	SN	.061	5.27	7.10	5X20/38
16	2,592	162			2	SN	.073	8.50	4.38	3/54/38
14	4,160	260			2	SN	.093	13.6	2.73	5X52/38
12	6,720	420			2	SN	.118	22.5	1.73	5X3/28/38
10	10,560	660			2	DN	.150	35.9	1.11	5X3/44/38
8	16,800	1,050			2	DN	.189	57.0	.692	5X5X42/38
6	26,400	1,650			2	DN	.236	89.4	.440	5X5X66/38
4	42,000	2,625			2	DN	.296	146.	.283	5X5X3/35/38
2	66,240	4,140			5	SNB	.494	247.	.180	6(5X3/46/38)
1	84,000	5,250			5	SNB	.551	311.	.141	6(5X5X35/38)
1/0	105,600	6,600			5	SNB	.613	389.	.112	6(5X5X44/38)
2/0	136,000	8,500			5	SNB	.749	522.	.087	10(5X5X34/38)
3/0	168,000	10,500			5	SNB	.828	642.	.070	10(5X5X42/38)
4/0	211,200	13,200			5	SNB	.966	824.	.056	12(5X5X44/38)
Recommended operating frequency - 100k Hz to 200k Hz
34	38.4	4	40	S	1	-	.008	.127	292.4	4/40
32	67.3	7			1	-	.011	.222	167.1	7/40
30	106.	11			1	SN	.017	.380	106.3	11/40
28	163.	17			1	SN	.020	.578	68.8	17/40
26	260.	27			1	SN	.024	.905	43.3	27/40
24	404.	42			1	SN	.030	1.40	27.9	42/40
22	634.	66			2	SN	.040	2.23	18.2	3X22/40
20	1,036.	108			2	SN	.050	3.62	11.1	3/36/40
18	1,634.	170			2	SN	.061	5.67	7.05	5/34/40
16	2,595.	270			2	SN	.073	9.18	4.55	3/3/30/40
14	4,180.	435			2	SN	.093	14.8	2.83	5X3/29/40
12	6,727.	700			2	SN	.118	23.7	1.76	5X5X28/40
10	10,571.	1,100			2	SN	.148	37.3	1.12	5X5X44/40
8	17,298.	1,800			5	DN	.236	66.6	.700	6(5X3/20/40)
6	26,812.	2,790			5	DN	.293	103.	.451	6(5X3/31/40)
4	42,813.	4,455			5	SNB	.431	176.	.282	9(5X3/33/40)
2	69,192.	7,200			5	SNB	.572	290.	.174	12(5X3/40/40)
1/0	105,710.	11,000			5	SNB	.668	428.	.114	10(5X5X44/40)

Round Litz
Equivalent Gauge	Circular Mil Area	Number of Strands	Strand Gauge	Film Coating	Construction Type	Other Insulation	Nominal Outside Diameter	Nominal Lbs./MFT	Direct Current Resistance Ohms/MFT	Construction
Recommended operating frequency - 200k Hz to 350k Hz
36	25.0	4	42	S	1	-	.007	.079	457.0	4/42
34	43.8	7			1	SN	.012	.157	261.2	7/42
32	62.5	10			1	SN	.014	.220	182.8	10/42
30	100.	16			1	SN	.016	.345	114.3	16/42
28	163.	26			1	SN	.020	.551	70.3	26/42
26	250.	40			1	SN	.024	.836	45.7	40/42
24	413.	66			2	SN	.031	1.40	28.4	3/22/42
22	656.	105			2	SN	.040	2.21	17.8	5/21/42
20	1,031.	165			2	SN	.049	3.45	11.4	5/33/42
18	1,688.	270			2	SN	.062	5.74	7.11	5X3/18/42
16	2,625.	420			2	SN	.073	8.88	4.57	5X3/28/42
14	4,125.	660			2	SN	.092	13.9	2.91	5X3/44/42
12	6,563.	1,050			2	DN	.119	22.4	1.83	5X5X42/42
10	10,687.	1,710			5	DN	.185	40.3	1.15	6(5X3/19/42)
8	16,875.	2,700			5	DN	.231	63.0	.729	6(5X3/30/42)
6	26,250.	4,200			5	DN	.287	97.1	.468	6(5X5/28/42)
4	42,188.	6,750			5	SNB	.434	169.	.291	10(5X3/45/42)
2	67,500.	10,800			5	SNB	.561	272.	.182	12(5X5/36/42)
Recommended operating frequency - 350k Hz to 850k Hz
38	16	4	44	S	1	-	.005	.050	729.1	4/44
36	28	7			1	SN	.010	.102	416.6	7/44
34	40	10			1	SN	.011	.143	291.7	10/44
32	64	16			1	SN	.014	.223	182.3	16/44
30	100	25			1	SN	.016	.341	116.7	25/44
28	160	40			1	SN	.019	.537	72.9	40/44
26	264	66			2	SN	.026	.898	45.3	3/22/44
24	420	105			2	SN	.032	1.41	28.5	3/35/44
22	640	160			2	SN	.039	2.13	18.7	5/32/44
20	1,020	255			2	SN	.048	3.37	11.7	5/51/44
18	1,620	405			2	SN	.060	5.45	7.56	5X3/27/44
16	2,600	650			2	SN	.072	8.71	4.72	5X5/26/44
14	4,200	1,050			2	SN	.091	14.0	2.920	5X5X42/44
12	6,600	1,650			2	DN	.117	22.8	1.910	5X5X3/22/44
10	10,500	2,625			2	DN	.146	36.4	1.200	5X5X3/35/44
8	16,800	4,200			5	DN	.226	62.0	.747	6(5X5/28/44)

Round Litz
Equivalent Gauge	Circular Mil Area	Number of Strands	Strand Gauge	Film Coating	Construction Type	Other Insulation	Nominal Outside Diameter	Nominal Lbs./MFT	Direct Current Resistance Ohms/MFT	Construction
Recommended operating frequency - 850k Hz to 1.4M Hz
38	17.3	7	46	S	1	-	.006	.054	658.9	7/46
36	24.7	10			1	SN	.010	.092	461.2	10/46
34	39.5	16			1	SN	.011	.142	288.3	16/46
32	64.2	26			1	SN	.014	.225	177.4	26/46
30	101.	41			1	SN	.016	.348	112.5	41/46
28	163.	66			2	SN	.021	.567	71.6	3/22/46
26	259.	105			2	SN	.026	.889	45.1	3/35/46
24	408.	165			2	SN	.032	1.38	28.7	5/33/46
22	667.	270			2	SN	.039	2.29	18.0	3X3/30/46
20	1,038.	420			2	SN	.048	3.54	11.6	5X3/28/46
18	1,630.	660			2	SN	.060	5.53	7.34	5X3/44/46
16	2,593.	1,050			2	SN	.072	8.75	4.61	5X5/42/46
14	4,261.	1,725			2	DN	.095	14.9	2.88	5X5X3/23/46
12	6,669.	2,700			2	DN	.118	23.2	1.84	5X5X3/36/46
10	10,745.	4,350			5	DN	.191	40.5	1.14	6(5X5/29/46)
Recommended operating frequency - 1.4M Hz to 2.8M Hz
42	7.7	5	48	S	1	-	.004	.024	1478.9	5/48
40	10.8	7			1	SN	.008	.044	1056.3	7/48
38	18.5	12			1	SN	.009	.072	616.2	12/48
36	27.7	18			1	SN	.010	.104	410.8	18/48
34	40.0	26			1	SN	.012	.147	284.4	26/48
32	69.3	45			1	SN	.014	.247	164.3	45/48
30	102.	66			2	SN	.018	.367	114.8	3/22/48
28	162.	105			2	SN	.022	.573	72.2	5/21/48
26	277.	180			2	SN	.027	.966	42.1	5X36/48
24	462.	300			2	SN	.034	1.63	25.9	5/3/20/48
22	647.	420			2	SN	.040	2.26	18.5	5/3/28/48
20	1,040.	675			2	SN	.050	3.61	11.5	5X3/45/48
18	1,694.	1,100			2	SN	.062	5.85	7.06	5X5/44/48
16	2,657.	1,725			2	SN	.074	9.35	4.62	5X5/3/23/48
14	4,158.	2,700			2	SN	.093	14.6	2.95	5X5/3/36/48
12	6,930.	4,500			5	DN	.159	26.9	1.77	6(5X5/30/48)

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