Tomita RM Core Transformer Ferrite

RM Core has good magnetic shielding effect, strong anti-interference ability, high inductance coefficient, small magnetic leakage, and the skeleton is equipped with multiple pins, which can be used to design multiple output transformers and can be installed at high density.

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Ferrite Core magnetic core rm core ferrite core inductor

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Dimensions and Effective Parameter

Cores	Dimensions(mm)								Effective Parameter					Weight (g)	Fig.	Specification
Cores	A	B	C	D	E	F	G	H	C1 (mm^-1)	Ae (mm²)	le (mm)	Ve (mm³)	Aw (mm²)	Weight (g)	Fig.	Specification
RM-4	11.0 +0/-0.4	10.5 +0/-0.2	4.6 +0/-0.2	7.95 +0.4/-0	3.9 +0/-0.2	7.0 +0.4/-0	2.0 +0.1/-0	9.8 +0/-0.4	1.90	11.0	21.0	232	15.7	1.4	2
RM-5	14.9 +0/-0.5	10.5 +0/-0.2	6.8 +0/-0.4	10.2 +0.4/-0	4.9 +0/-0.2	6.3 +0.4/-0	2.0 +0.1/-0	12.3 +0/-0.5	1.00	20.8	20.8	430	18.2	2.9	2
RM-6	17.9 +0/-0.6	12.5 +0.2/-0.4	8.2 +0/-0.4	12.4 +0.5/-0	6.4 +0/-0.2	8.0 +0.5/-0.1	3.0 +0.15/-0	14.7 +0/-0.6	0.86	31.3	26.9	840	26.0	4.5	1
RM-4J	11.0 +0/-0.4	10.5 +0/-0.2	4.6 +0/-0.2	7.95 +0.4/-0	3.9 +0/-0.2	7.0 +0.4/-0		9.8 +0/-0.4	1.62	13.9	22.5	313	15.7	1.6	4
RM-5J	14.9 +0/-0.5	10.5 +0/-0.2	6.8 +0/-0.4	10.2 +0.4/-0	4.9 +0/-0.2	6.3 +0.4/-0		12.3 +0/-0.5	0.94	23.8	22.3	530	18.2	3.1	4
RM-6J	17.9 +0/-0.6	12.5 +0/-0.4	8.2 +0/-0.4	12.4 +0.5/-0	6.4 +0/-0.2	8.0 +0.5/-0.1		14.7 +0/-0.6	0.80	35.7	28.5	1020	26.0	5.1	3
RM-8J	23.2 +0/-0.9	16.5 +0/-0.2	11.0 +0/-0.4	17.0 +0.6/-0	8.55 +0/-0.3	10.8 +0.4/-0		19.7 +0/-0.7	0.60	63.0	38.4	2440	48.7	12.2	3
RM-10J	28.5 +0/-1.3	18.7 +0.1/-0.3	13.5 +0/-0.5	21.2 +0.9/-0	10.9 +0/-0.4	12.4 +0.6/-0		24.7 +0/-1.1	0.45	98.0	44.0	4310	69.53	21.3	4

Electrical Characteristics

Cores	AL-Value(nH/N²) Without air gap
Cores	2H1	2E2D	2G1	2G8
RM-4	4060min	3900+40-30 %	1700±25%	1050±25%
RM-5	7700min	5600min	2800±25%	1670±25%
RM-6	10500min	8000min	3800±25%	1900±25%
RM-4J	4200min	3570min	1800±25%	1250±25%
RM-5J	8260min	6300min	3000±25%	1900±25%
RM-6J	9450min	8050min	3600±25%	2200±25%
RM-8J				3200±25%

Material:2G8 (Low core loss)

Code	AL-Value(nH/n²) With air gap
Code	AL***	AL40	AL63	AL100	AL160	AL250	AL315	AL400
2G8-RM-4-AL***	Gap(mm)≒	0.400	0.220	0.110	0.050
2G8-RM-5-AL***	Gap(mm)≒		0.340	0.220	0.120	0.060	0.050
2G8-RM-6-AL***	Gap(mm)≒			0.380	0.220	0.120	0.090	0.060
2G8-RM-4J-AL***	Gap(mm)≒	0.510	0.280	0.160	0.090
2G8-RM-5J-AL***	Gap(mm)≒		0.420	0.270	0.150	0.090	0.060
2G8-RM-6J-AL***	Gap(mm)≒			0.460	0.270	0.150	0.110	0.080

Shenzhen Gaorunxin Technology Co., Ltd

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