Tomita EI Type Ferrite Core for Transformer

EI Ferrite Core is widely used in power conversion transformers and chokes, DVD power supplies, camera flashes, communication equipment and other electronic equipment.

Product Name: EI Type Core
Brand: Tomita
Lead Time: In Stock

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Product Details
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EI Ferrite Core has a compact structure, small size, high operating frequency, wide operating voltage range, tight air gap coupling at the top of the coil, and low loss. The loss is negatively correlated with temperature, which can prevent the temperature from continuing to rise.

EI Ferrite Core is widely used in power conversion transformers and chokes, DVD power supplies, camera flashes, communication equipment and other electronic equipment.

Dimensions and Effective Parameter

Cores	Dimensions(mm)							Effective Parameter					Weight (g)	Specification
Cores	A	B	C	D	E	F	I	C1 (mm^-1)	Ae (mm²)	le (mm)	Ve (mm³)	Aw (mm²)	Weight (g)	Specification
EI-10	E:10.0±0.3 I:10.2±0.3	6.6±0.2	E:4.9 +0/-0.3 I:5.0 +0/-0.35	7.7 +0.3/-0	2.4±0.2	4.2±0.1	1.0 +0.2/-0	1.59	11.0	17.5	192.4	11.4	0.97
EI-12HB	E:12.2±0.25 I:12.35±0.25	8.95±0.3	2.8±0.2	9.0±0.25	2.5±0.2	5.15±0.15	1.9±0.15	2.48	8.7	21.5	185.6	16.7	1.2
EI-12.2	E:12.2±0.25 I:12.35±0.25	9.0±0.3	E:5.3±0.2 I:5.5±0.2	9.0±0.25	2.5±0.2	5.2±0.15	1.5±0.15	1.32	16.4	21.6	352.7	16.9	2.2
EI-12.5	E:12.5±0.2 I:12.6±0.2	9.1±0.35	5.0±0.2	9.2 +0.25/-0.15	2.5 +0.1/-0.2	5.0±0.15	1.6±0.15	1.36	15.7	21.4	336.9	17.0	1.9
EI-16	16.0±0.3	14.3±0.4	5.0 +0/-0.3	12.0±0.3	4.2 +0/-0.4	10.2 +0.3/-0.2	2.05±0.2	1.78	19.6	34.8	679.6	40.8	3.6
EI-19X12X5	19.0±0.3	11.98±0.3	5.2 +0/-0.4	14.5±0.3	4.7 +0/-0.4	7.18±0.13	2.4±0.15	1.37	23.1	31.6	731.2	35.9	4.2
EI-19ZT	19.0±0.3	15.8 +0.4/-0.3	5.2 +0/-0.4	14.5±0.3	4.7 +0/-0.5	11.0 +0.3/-0.2	2.4±0.2	1.72	22.9	39.4	902.2	55.5	4.2
EI-19	19.0±0.3	15.9±0.4	5.1 +0/-0.5	14.0±0.3	5.1 +0/-0.5	11.3±0.3	2.35±0.2	1.68	23.3	39.2	914.2	51.7	4.7
EI-22	22.0±0.4	18.6±0.4	6.0 +0/-0.6	14.0±0.3	6.0 +0/-0.6	10.6±0.3	4.0±0.2	1.02	39.6	40.2	1592	44.0	8.1
EI-22AT	22.0±0.3	18.8±0.4	5.7±0.2	15.75 +0.5/-0	5.7±0.2	10.8±0.2	4.0±0.2	1.15	36.6	42.1	1541	55.6	8.2
EI-25	25.0±0.4	20.0±0.4	6.55±0.3	18.6±0.3	6.55±0.3	13.6±0.25	3.2±0.15	1.17	42.2	49.4	2084	81.9	10.4
EI-25.3	25.3±0.4	18.3±0.4	7.0 +0/-0.5	19.3±0.3	6.5±0.25	12.2 +0.4/-0.1	2.9 +0/-0.3	1.14	41.3	47.0	1943	79.0	9.9
EI-25.4	25.4±0.4	19.05±0.5	6.35±0.25	19.0±0.3	6.35±0.3	12.7 +0.3/-0.2	3.2±0.2	1.19	40.4	48.0	1942	80.3	10.1

Electrical Characteristics

Cores	AL-Value(nH/N²) Without air gap
Cores	2G1	2G4	2H5	2G8
EI-10	1500±25%			980±25%
EI-12HB
EI-12.2				1600±25%
EI-12.5	2000±25%		1400±25%	1250±25%
EI-16	2100±25%			1250±25%
EI-19X12X5
EI-19ZT			1800±25%	1270±25%
EI-19	2750±25%			1500±25%
EI-22	4000±25%			2200±25%
EI-22AT	3600±25%	3300±25%		2000±25%
EI-25	4550±25%		2800±25%	2050±25%
EI-25.3				2000±25%
EI-25.4	3400±25%			2200±25%

Shenzhen Gaorunxin Technology Co., Ltd

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