Magnesil

For Power Transformers and MagAmps

Magnesil, a grain-oriented 3% silicon-iron alloy, is processed and annealed to develop high squareness and low core loss. It is usually used in high quality toroidal power transformers, current transformers and high power saturable reactors and magnetic amplifiers. It exhibits high saturation flux density with high squareness but has comparatively high coercive force and core loss. With its high Curie temperature, it is quite useful in magnetic devices which are to be exposed to temperatures between 200ºC (392ºF) and 500ºC (932ºF). At higher temperatures, uncased cores should only be used due to case temperature limitations.

Key Characteristics

Composition: Si • Fe
Shapes: Toroid
Sizes: 7 mm to 250 mm
Flux Density (T): 1.50 to 1.80
Coating Color: Red

View Magnesil Material Property Curves including Core Loss vs. Induction Level Curves and Typical Hysteresis Loops.

Tape Wound Core Part Number Identification

How To Order: Magnetics Tape Wound Cores

Magnesil Material Code: K

Tape Core K Material

Part Number	Description	Core Area cm²	L_e Path Length cm	Wa Window Area cm²	WaAc cm⁴	Bare ID mm	Bare OD mm	Bare HT mm	Boxed ID min mm	Boxed OD max mm	Boxed HTmax mm
01504022K	2 MAGNESIL NON-METALLIC	0.022	3.25	0.456	0.01	9.53	11.13	3.18	7.77	12.93	5.05
01534022K	2 MAGNESIL UNCASED	0.022	3.25	0.456	0.01	9.53	11.13	3.18
01501532K	2 MAGNESIL NONMETALLIC	0.043	3.49	0.456	0.02	9.53	12.70	3.18	7.95	14.45	5.05
01500562K	2 MAGNESIL NONMETALIC	0.043	4.49	0.916	0.041	12.70	15.88	3.18	10.95	17.63	5.05
01500572K	2 MAGNESIL NONMETALLIC	0.043	5.48	1.534	0.066	15.88	19.05	3.18	14.12	20.80	5.05
01500564K	4 MAGNESIL NONMETALIC	0.045	4.49	0.916	0.041	12.70	15.88	3.18	10.95	17.63	5.05
01533744K	4 MAGNESIL UNCASED	0.046	7.48	-	-	22.23	25.40	3.18
01530864K	4 MAGNESIL UNCASED	0.046	8.47	-	-	25.40	28.58	3.18
0153D332K	2 MAGNESIL UNCASED	0.073	3.66	-	-	6.22	17.09	1.59
01500002K	2 MAGNESIL NONMETALIC	0.086	4.99	0.916	0.081	12.70	19.05	3.18	10.95	20.80	5.05
01540002K	2 MAGNESIL ENCAPSULD	0.086	4.99	0.916	0.081	12.70	19.05	3.18
01500022K	2 MAGNESIL NONMETALC	0.086	6.18	1.676	0.142	16.51	22.86	3.18	14.76	24.61	5.05
01500004K	4 MAGNESIL NONMETALC	0.091	4.99	0.916	0.081	12.70	19.05	3.18	10.95	20.80	5.05
01520004K	4 MAGNESIL GVB.ALUM	0.091	4.99	0.916	0.081	12.70	19.05	3.18
01540004K	4 MAGNESIL ENCAPSULD	0.091	4.99	0.916	0.081	12.70	19.05	3.18
01540024K	4 MAGNESIL ENCAPSULD	0.091	6.18	1.676	0.142	16.51	22.86	3.18
01541344K	4 MAGNESIL ENCAPSULD	0.091	6.98	-	-	19.05	25.40	3.18
01526664K	4 MAGNESIL GVB ALUM	0.091	9.97	-	-	28.58	34.93	3.18
0153D694K	4 MAGNESIL UNCASED	0.099	5.01	-	-	11.63	20.27	2.54
01549562K	2 MAGNESIL ENCAPSULD	0.119	3.31	-	-	7.62	13.46	4.78
01536322K	2 MAGNESIL UNCASED	0.129	4.99	-	-	12.70	19.05	4.78
01536324K	4 MAGNESIL UNCASED	0.137	4.99	-	-	12.70	19.05	4.78
0153D324K	4 MAGNESIL UNCASED	0.146	8.08	-	-	20.62	30.86	3.18
01543192K	2 MAGNESIL ENCAPSULD	0.171	3.99	-	-	9.53	15.88	6.35
01501762K	2 MAGNESIL NONMETALLIC	0.171	4.99	0.916	0.157	12.70	19.05	6.35	10.95	20.80	8.23
01521762K	2 MAGNESIL GVB ALUM	0.171	4.99	0.916	0.157	12.70	19.05	6.35
01541762K	2 MAGNESIL ENCAPSULD	0.171	4.99	0.916	0.157	12.70	19.05	6.35
01500332K	2 MAGNESIL NON-METALLIC	0.171	5.98	1.534	0.263	15.88	22.23	6.35	14.12	23.98	8.23
01530332K	2 MAGNESIL UNCASED	0.171	5.98	1.534	0.263	15.88	22.23	6.35
0154C212K	2 SILICON ENCAPSULATED	0.172	5.23	-	-	13.46	19.84	6.35
01521154K	4 MAGNESIL GVB. ALUM.	0.181	9.97	-	-	28.58	34.93	6.35
01549694K	4 SILICON ENCAP	0.182	5.99	-	-	14.30	23.83	4.24
01500334K	4 MAGNESIL NON-METALLIC	0.182	5.98	1.534	0.263	15.88	22.23	6.35	14.12	23.98	8.23
01520334K	4 MAGNESIL GVB.ALUM	0.182	5.98	1.534	0.263	15.88	22.23	6.35
01530334K	4 MAGNESIL UNCASED	0.182	5.98	1.534	0.263	15.88	22.23	6.35
01540334K	4 MAGNESIL ENCAPSULD	0.182	5.98	1.534	0.263	15.88	22.23	6.35
01500614K	4 MAGNESIL NONMETALIC	0.182	6.98	2.273	0.39	19.05	25.40	6.35	17.04	27.41	8.48
01500044K	4 MAGNESIL NONMETALIC	0.182	8.97	4.238	0.724	25.40	31.75	6.35	23.39	33.76	8.48
0154B582K	2 MAGNESIL ENCAPSULD	0.193	4.49	-	-	9.53	19.05	4.78
01547422K	2 MAGNESIL ENCAPSULD	0.193	5.48	-	-	12.70	22.23	4.78
01540762K	4 MAGNESIL ENCAPSULD	0.193	6.48	1.478	0.284	15.88	25.40	4.78
01540764K	4 MAGNESIL ENCAPSULD	0.205	6.48	1.478	0.284	15.88	25.40	4.78
01521064K	4 MAGNESIL GVB. ALUM.	0.205	7.48	2.273	0.441	19.05	28.58	4.78
01541064K	4 MAGNESIL ENCAPSULD	0.205	7.48	2.273	0.441	19.05	28.58	4.78
01543924K	4 MAGNESIL ENCAPSULD	0.205	10.47	-	-	28.58	38.10	4.78
01549912K	2 MAGNESIL ENCAPSULD	0.257	5.49	-	-	14.30	20.65	9.53
01500072K	2 MAGNESIL NONMETALC	0.257	6.48	1.478	0.38	15.88	25.40	6.35	13.87	27.41	8.48
01530842K	2 MAGNESIL UNCASED	0.257	7.48	2.273	0.582	19.05	28.58	6.35
01542852K	2 MAGNESIL ENCAPSULATED	0.257	8.47	-	-	22.23	31.75	6.35
01540292K	2 MAGNESIL ENCAPSULATED	0.257	9.47	4.438	1.09	25.40	34.93	6.35
01520182K	2 MAGNESIL GVB.ALUM	0.257	14.46	-	-	41.28	50.80	6.35
0153D354K	4 MAGNESIL UNCASED	0.264	9.71	-	-	21.72	40.16	3.18
01543664K	4 MAGNESIL ENCAPSULD	0.271	8.97	-	-	22.23	34.93	4.75
01500074K	4 MAGNESIL NONMETALC	0.272	6.48	1.478	0.38	15.88	25.40	6.35	13.87	27.41	8.48
01530074K	4 MAGNESIL UNCASED	0.272	6.48	1.478	0.38	15.88	25.40	6.35
01540074K	4 MAGNESIL ENCAPSULD	0.272	6.48	1.478	0.38	15.88	25.40	6.35
01546714K	4 MAGNESIL ENCAPSULD	0.272	5.98	-	-	15.88	22.23	9.53
01540844K	4 MAGNESIL ENCAPSULD	0.272	7.48	2.273	0.582	19.05	28.58	6.35
01532854K	4 MAGNESIL UNCASED	0.272	8.47	-	-	22.23	31.75	6.35
01542854K	4 MAGNESIL ENCAPSULD	0.272	8.47	-	-	22.23	31.75	6.35
01500294K	4 MAGNESIL NONMETALLIC	0.272	9.47	4.438	1.09	25.40	34.93	6.35	22.89	37.44	8.99
01520294K	4 SILICON ALUM GVB	0.272	9.47	4.438	1.09	25.40	34.93	6.35
01500184K	4 MAGNESIL NONMETALC	0.272	14.46	-	-	41.28	50.80	6.35
01520184K	4 MAGNESIL GVB.ALUM	0.272	14.46	-	-	41.28	50.80	6.35
01533182K	2 MAGNESIL UNCASED	0.343	7.98	-	-	19.05	31.75	6.35
01543182K	2 MAGNESIL ENCAPSULD	0.343	7.98	-	-	19.05	31.75	6.35
01503912K	2 MAGNESIL NONMETALC	0.343	8.97	4.435	1.52	25.40	31.75	12.70	23.01	34.14	15.21
01522202K	2 MAGNESIL GVB.ALUM	0.343	10.97	-	-	28.58	41.28	6.35
01544302K	2 MAGNESIL ENCAPSULATED	0.343	17.95	-	-	50.80	63.50	6.35
01500324K	4 MAGNESIL NONMETALIC	0.363	9.97	4.238	1.45	25.40	38.10	6.35	22.89	40.61	8.99
01541674K	4 MAGNESIL ENCAPSULD	0.364	6.98	-	-	15.88	28.58	6.35
01540342K	2 MAGNESIL ENCAPSULD	0.386	7.48	2.273	0.876	19.05	28.58	9.53
01541812K	2 MAGNESIL ENCAPSULD	0.386	8.47	3.16	1.22	22.23	31.75	9.53
01545042K	2 MAGNESIL ENCAPSULD	0.386	10.47	5.478	2.12	28.58	38.10	9.53
01543152K	2 MAGNESIL ENCAPSULD	0.386	12.46	-	-	34.93	44.45	9.53
0154D572K	2 MAGNESIL ENCAPSULD	0.394	4.99	-	-	12.70	19.05	14.61
01500944K	4 MAGNESIL NONMETALC	0.408	6.48	1.534	0.592	15.88	25.40	9.53	13.87	27.41	11.66
01540944K	4 MAGNESIL ENCAPSULD	0.408	6.48	1.534	0.592	15.88	25.40	9.53
01540344K	4 MAGNESIL ENCAPSULD	0.408	7.48	2.273	0.876	19.05	28.58	9.53
01541814K	4 MAGNESIL ENCAPSULD	0.408	8.47	3.16	1.22	22.23	31.75	9.53
01545044K	4 MAGNESIL ENCAPSULD	0.408	10.47	5.478	2.12	28.58	38.10	9.53
01541394K	4 MAGNESIL ENCAPSULD	0.482	13.96	-	-	38.10	50.80	9.53
01546402K	2 MAGNESIL ENCAPSULD	0.514	6.48	-	-	15.88	25.40	12.70
01540992K	2 MAGNESIL ENCAPSULD	0.514	7.48	-	-	19.05	28.58	12.70
01500262K	2 MAGNESIL NONMETALC	0.514	9.97	4.238	2.18	25.40	38.10	9.53	22.89	40.61	12.17
01501334K	4 MAGNESIL NONMETALC	0.545	7.18	1.676	0.861	16.51	29.21	9.53	14.50	31.22	11.66
01541334K	4 MAGNESIL ENCAPSULD	0.545	7.18	1.676	0.861	16.51	29.21	9.53
01531884K	4 MAGNESIL UNCASED	0.545	7.98	2.238	1.15	19.05	31.75	9.53
01541884K	4 MAGNESIL ENCAPSULD	0.545	7.98	2.238	1.15	19.05	31.75	9.53
01523834K	4 MAGNESIL GVB ALUMINUM	0.545	8.97	3.16	1.63	22.23	34.93	9.53
01500264K	4 MAGNESIL NONMETALC	0.545	9.97	4.238	2.18	25.40	38.10	9.53	22.89	40.61	12.17
01540984K	4 MAGNESIL ENCAPSULD	0.545	11.96	-	-	31.75	44.45	9.53
01543524K	4 MAGNESIL ENCAPSULD	0.549	9.47	-	-	25.40	34.93	12.70
01548372K	2 MAGNESIL ENCAPSULD	0.685	7.18	-	-	16.51	29.21	12.70
01520382K	2 MAGNESIL GVB ALUMINUM	0.689	9.97	4.238	2.91	25.40	38.10	12.70
01540382K	2 MAGNESIL ENCAPSULD	0.689	9.97	4.238	2.91	25.40	38.10	12.70
01540352K	2 MAGNESIL ENCAPSULD	0.689	11.96	6.815	4.67	31.75	44.45	12.70
01500552K	2 MAGNESIL NON-METALLIC	0.689	13.96	9.924	6.81	38.10	50.80	12.70	35.59	53.31	15.34
01520384K	4 MANESIL GVB ALUMINUM	0.726	9.97	4.238	2.91	25.40	38.10	12.70
01540384K	4 MAGNESIL ENCAPSULD	0.726	9.97	4.238	2.91	25.40	38.10	12.70
01540914K	4 MAGNESIL ENCAPSULD	0.726	10.97	-	-	28.58	41.28	12.70
01500354K	4 MAGNESIL NONMETALC	0.726	11.96	6.815	4.67	31.75	44.45	12.70	29.18	47.02	15.42
01540354K	4 MAGNESIL ENCAPSULD	0.726	11.96	6.815	4.67	31.75	44.45	12.70
0154A144K	4 MAGNESIL ENCAPSULD	0.726	18.94	-	-	53.98	66.68	12.70
01545142K	2 MAGNESIL ENCAPSULD	0.771	8.97	-	-	19.05	38.10	9.53
01534252K	2 MAGNESIL UNCASED	0.771	12.96	6.815	5.26	31.75	50.80	9.53
01540662K	2 MAGNESIL ENCAPSULD	0.771	18.94	-	-	50.80	69.85	9.53
01545144K	4 MAGNESIL ENCAPSULD	0.817	8.97	-	-	19.05	38.10	9.53
01504254K	4 MAGNESIL NONMETALLIC	0.817	12.96	6.815	5.26	31.75	50.80	9.53	28.80	53.75	12.50
01534254K	4 MAGNESIL UNCASED	0.817	12.96	6.815	5.26	31.75	50.80	9.53
0154D192K	2 MAGNESIL ENCAPSULD	0.864	5.66	-	-	12.70	23.37	19.05
01547852K	2 MAGNESIL ENCAPSULD	1.028	6.98	-	-	15.88	28.58	19.05
01541692K	2 MAGNESIL ENCAPSULD	1.028	12.96	-	-	31.75	50.80	12.70
01542954K	4 MAGNESIL ENCAPSULD	1.285	10.97	-	-	25.40	44.45	15.88
01549624K	4 MAGNESIL ENCAPSULD	1.362	14.96	-	-	31.75	63.50	9.53
01540012K	2 MAGNESIL ENCAPSULD	1.371	15.95	9.64	13.2	38.10	63.50	12.70
01541032K	2 MAGNESIL ENCAPSULD	1.371	19.94	17.894	24.5	50.80	76.20	12.70
01505554K	4 MAGNESIL NONMETALLIC	1.452	13.96	6.699	9.19	31.75	57.15	12.70	28.42	60.48	15.93
01500014K	4 MAGNESIL NON-METALLIC	1.452	15.95	9.64	13.2	38.10	63.50	12.70	34.77	66.83	15.93
01540014K	4 MAGNESIL ENCAPSULD	1.452	15.95	9.64	13.2	38.10	63.50	12.70
01542844K	4 MAGNESIL ENCAPSULD	1.453	11.96	-	-	25.40	50.80	12.70
01507834K	4 MAGNESIL NON-METALLIC	1.817	19.94	-	-	50.80	76.20	15.88
01543084K	4 MAGNESIL ENCAPSULD	2.179	25.92	-	-	69.85	95.25	19.05