Tomita TR Type Toroid Cores

TR Type Ferrite Cores have large output current, low loss, high voltage resistance, high inductance and low price.

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Tomita TRH Type Toroid Cores

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TR Type Ferrite Cores have large output current, low loss, high voltage resistance, high inductance and low price.

TR Type Ferrite Cores Applications: Choke coils, EMI/RFI filtering, audio transformers, widely used in various energy-saving lamps, audio, control circuits and other electronic equipment.

Dimensions and Effective Parameter

Cores	Dimensions				Effective Parameter				Weight (g)
Cores	A	B	C	D	C1 (mm-1)	Ae (mm2)	le (mm)	Ve (mm3)	Weight (g)
TR□-2.54X1.27X1.27	2.54±0.15	1.27±0.15	1.27±0.15	0.20 +0.6/-0.5	7.16	0.773	5.53	4.28	0.02
TR□-3X1.5X0.8	3.0±0.15	1.5±0.15	0.8±0.1	0.15+0	11.3	0.575	6.53	3.75	0.02
TR□-3X1.5X2.5	3.0±0.2	1.5±0.2	2.5±0.15	0.15+0	3.63	1.800	6.53	11.08	0.07
TR□-3.05X1.78X2.03	3.05±0.127	1.78±0.127	2.03±0.127	0.20 +0.1/-0.05	5.91	1.230	7.23	8.86	0.05
TR□-3.43X1.78X1.52	3.43±0.127	1.78±0.127	1.52±0.127	0.20 +0.1/-0.05	6.48	1.180	7.63	8.97	0.05
TR□-3.43X1.78X2.11	3.43±0.127	1.78±0.127	2.11±0.127	0.20 +0.1/-0.05	4.63	1.650	7.63	12.60	0.07
TR□-3.51X1.78X1.27	3.51±0.15	1.78±0.15	1.27±0.15	0.15+0	7.30	1.056	7.70	8.13	0.05
TR□-3.94X1.78X1.65	3.94±0.2	1.78±0.2	1.65±0.2	0.20 +0.1/-0.05	4.80	1.690	8.11	13.70	0.08
TR□-3.94X2.24X1.27	3.94±0.2	2.24±0.2	1.27±0.15	0.15+0	8.78	1.049	9.21	9.66	0.05
TR□-3.94X2.24X2.54	3.94±0.2	2.24±0.2	2.54±0.2	0.15+0	4.39	2.100	9.21	19.4	0.1
TR□-4X2X1	4.0±0.2	2.0±0.15	1.0±0.1	0.1	9.14	0.953	8.71	8.30	0.05
TR□-4X2X2	4.0±0.3	2.0±0.25	2.0±0.2	0.1	4.55	1.91	8.71	16.7	0.09
TR□-4X2.4X1.6	4.0±0.2	2.4±0.2	1.6±0.2	0.2	7.74	1.244	9.63	8.30	0.07
TR□-4.4X2.8X2.5	4.4±0.2	2.8±0.2	2.5±0.2	0.05	5.57	1.96	10.9	21.5	0.12
TR□-5.85X3.05X2	5.85±0.3	3.05±0.3	2.0±0.2	0.15	4.88	2.67	13.0	34.8	0.18
TR□-6X3X2	6.0±0.3	3.0±0.3	2.0±0.2	0.3	4.65	2.81	13.1	36.7	0.2
TR□-6.3X3.8X2.7	6.3±0.15	3.8±0.15	2.7±0.2	0.3	4.71	3.23	15.2	49.1	0.26
TR□-7.3X3.3X4.3	7.3±0.3	3.3±0.3	4.3±0.3	0.3	1.86	8.09	15.0	121.5	0.5
TR□-8X4X2	8.1±0.3	4.35±0.3	2.0±0.2	0.3	5.16	3.56	18.4	65.3	0.3
TR□-9X5X3	9.1±0.3	5.1±0.3	3.0±0.3	0.3	3.66	5.76	21.1	121.6	0.6
TR□-10X5X5	10.0±0.4	5.1±0.3	5.0±0.3	0.3	1.88	11.72	22.0	258.1	1.4
TR□-12X6X4	12.2±0.4	6.1±0.3	4.0±0.3	0.5	2.31	11.52	26.6	306.0	1.5
TR□-13X7X5	13.0±0.4	7.0±0.3	5.0±0.3	0.5	2.06	14.32	29.5	422.4	2.1
TR□-14X8X7	14.0±0.4	8.0±0.3	7.0±0.3	0.5	1.62	20.25	32.8	664.6	3.3
TR□-16X8X13	16.3±0.4	8.15±0.4	13.0±0.4	0.5	0.70	50.70	35.5	1800	10.2
TR□-16X10X7	16.0±0.4	10.0±0.4	7.0±0.3	0.5	1.93	20.4	39.4	804	4.0
TR□-18X10X7	18.0±0.4	10.0±0.4	7.0±0.3	0.5	1.54	27.0	41.6	1122	5.6
TR□-18X10X10	18.0±0.4	10.0±0.4	10.0±0.4	0.5	1.08	38.66	41.6	1606	8.6
TR□-19X10X10	18.45 +0.25/-0.35	9.75 +0.35/-0.25	10.25±0.25	0.4	0.98	42.30	41.5	1756	9.3
TR□-20X10X10	20.4±0.5	10.3±0.5	10.0±0.5	0.5	0.92	48.37	44.7	2161	12.3
TR□-22X14X8	22.0±0.5	14.0±0.4	8.0±0.3	0.5	1.75	31.25	54.7	1708	8.5
TR□-23X11X14	23.8±0.5	11.4±0.4	14.0±0.4	0.5	0.61	82.78	50.6	4188	22.7
TR□-25X15X8	25.0±0.5	15.0±0.4	8.0±0.3	0.8	1.55	38.93	60.2	2343	21.3
TR□-25X15X12	25.0±0.5	15.0±0.4	12.0±0.4	0.8	1.03	58.50	60.2	3521	19.2
TR□-28X16X13	28.3±0.5	16.2±0.5	13.0±0.4	0.8	0.87	76.37	66.8	5129	28.0
TR□-31X19X8A	31.0 +0.5/-0.7	19.0±0.5	8.0±0.3	0.8	1.63	46.13	75.4	3477	19.3
TR□-31X19X13A	31.0 +0.5/-0.7	19.0±0.5	13.0±0.4	0.8	1.00	75.30	75.4	5676	27.8
RI-14.3X28.6-6.35	14.28±0.4	6.35±0.25	28.58±0.7	0.5	0.27	107.1	29.1	3118	18.1
RI-16X28-9	16.0±0.3	9.0±0.25	28.0±0.7	0.5	0.39	95.13	37.2	3537	19.5
RI-17.5X28.5-9.5	17.5±0.35	9.5±0.25	28.5±0.75	0.5	0.36	110.30	39.9	4400	24.28

The dimensions and their tolerance might be changed from above-mentioned list in accordance with the materials.

Electrical Characteristics

Mn-Zn Materials :10KHz(H<0.8A/m)
Ni-Zn Materials :100KHz(H<0.8A/m)

Cores	AL-Value(nH/N2)
Cores	2H1	2E2D	2G1	2G4	2G8	3A4
TR□-2.54X1.27X1.27	2640	1760	1200	960	400	140
TR□-3X1.5X0.8		1080	770	600
TR□-3X1.5X2.5		3460	2400	1836
TR□-3.05X1.78X2.03
TR□-3.43X1.78X1.52		1950		1050		160
TR□-3.43X1.78X2.11
TR□-3.51X1.78X1.27		1700	1200	920	400
TR□-3.51X1.78X2.06		2790	1950	1480
TR□-3.94X1.78X1.65	3960
TR□-3.94X2.24X1.27	2160	1400	1000	750		112
TR□-3.94X2.24X2.54		2860	2000	1510	660
TR□-4X2X1		1350	960	720
TR□-4X2X2	4100	2700	1900	1500	630	220
TR□-4X2.4X1.6	2400	1600	1100	860
TR□-4.4X2.8X2.5						180
TR□-5.85X3.05X3.2			2900	2200
TR□-6X3X2		2400	1900	1500	620	220
TR□-6.3X3.8X2.7				1400
TR□-7.3X3.3X4.3						540
TR□-8X4X2	3650	2150	1700	1300	560
TR□-9X5X3	5100	3400	2400	1900	800	270
TR□-10X5X5	10000	6700	4700	3600	1540	540
TR□-12X6X4		5400	3800	2900
TR□-13X7X5	9100	6000	4300	3300	1400	490
TR□-14X8X7	11600	7500	5400	4100	1750
TR□-16X8X13		18000				1450
TR□-16X10X7		6500				520
TR□-18X10X7		7600	5700	4300		650
TR□-18X10X10	17500	11500	8200	6200	2600	940
TR□-19X10X10	19200	12700	8900	6800	2900	1100
TR□-20X10X10	20000	14000	9600	7300	3100	1100
TR□-22X14X8		7000	5000	3800	1650	575
TR□-23X11X14			14200			1600
TR□-25X15X8		8100	5700	4300	1850
TR□-25X15X12	18300	11400	8500	6500	2800	980
TR□-28X16X13	21000	14400	10000	7600		1150
TR□-31X19X8A		7700	5400	4100	1750	620
TR□-31X19X13A	18000	12500	8800	6700	2900
RI-14.3X28.6-6.35						3900
RI-16X28-9						2570
RI-17.5X28.5-9.5						2800

All AL-Value above was obtained from TRB shape of toroid.

Shenzhen Gaorunxin Technology Co., Ltd

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