Official distributor of
Europe GmbH for ferrites in Europe
Toroid (Ring Cores R)
TDK (Epcos) product line includes a wide range of toroids with finely graded diameters ranging from 2.5 to 202 mm. Other core heights can be supplied on request. All cores are available in the usual materials.
Application:
Toroids are primarily used as EMC chokes for suppressing RF interference in the MHZ region and in signal transformers. Typical applications for toroids of NiZn ferrites are LAN chokes. One of the materials available for this purpose is K10; other materials on request.
Toroids are also increasingly used for power applications.
Coating:
The following high-permeability MnZn materials are available for interference suppression:
- R 2.5...R12.5 for telecommunications, e.g. ISDN (N30, T38, T46)
- R13.3...R26 for power line chokes (N30, T65, T35, T37, T38)
- From R34 and more for chokes and filters in industrial use (T65)
Toroids are also increasingly used for power applications.
Coating:
Toroids are available in different coating versions, thus offering the appropriate solution for every application. The coating not only offers protection for the edges but also provides an insulation function. For small ring cores, EPCOS have introduced a parylene coating which features a low coating thickness and high dielectric strength.
Ring cores Dimensions
|
Standard Size |
Uncoated |
Coated |
|||||
|---|---|---|---|---|---|---|---|
| da [mm] | di [mm] | h [mm] | da [mm] | di [mm] | h [mm] | ||
| R 2.5 x 1.5 x 1 | 2,50±0,12 | 1,50±0,1 | 1,00±0,1 | 2,67 max | 1,35 min | 1,15 max |
|
| R 2.5 x 1.5 x 1.3 | 2,50±0,12 | 1,50±0,1 | 1,30±0,12 | 2,67 max | 1,35 min | 1,47 max |
|
| R 2.54 x 1.27 x 1.27 | 2,54±0,12 | 1,27±0,12 | 1,27±0,12 | 2,71 max | 1,12 min | 1,44 max |
|
| R 3.05 x 1.27 x 1.27 | 3,05±0,12 | 1,27±0,12 | 1,27±0,12 | 3,22 max | 1,10 min | 1,44 max |
|
|
R 3.05 x 1.27 x 2.54 |
3,05±0,12 | 1,27±0,12 | 2,54±0,12 | 3,22 max | 1,10 min | 2,71 max |
|
| R 3.05 x 1.78 x 2.03 | 3,05±0,12 | 1,78±0,12 | 2,03±0,12 | 3,22 max | 1,61 min | 2,20 max |
|
| R 3.43 x 1.78 x 1.78 | 3,43±0,12 | 1,78±0,12 |
1,78±0,12 |
3,60 max | 1,61 min | 1,95 max |
|
| R 3.43 x 1.78 x 2.03 | 3,43±0,12 | 1,78±0,12 | 2,03±0,12 | 3,60 max | 1,61 min | 2,20 max |
|
| R 3.94 x 1.78 x 1.78 | 3,94±0,12 | 1,78±0,12 | 1,78±0,12 | 4,11 max | 1,61 min | 1,95 max |
|
| R 3.94 x 2.24 x 1.30 | 3,94±0,12 | 2,24±0,12 |
1,30±0,12 |
4,11 max | 2,07 min | 1,47 max |
|
| R 3.94 x 2.24 x 2.30 | 3,94±0,12 | 2,24±0,12 | 2,30±0,15 | 4,11 max | 2,07 min | 2,50 max |
|
| R 4 x 2.4 x 1.6 | 4,0±0,12 | 2,4±0,12 |
1,6±0,1 |
4,17 max |
2,23 min |
1,75 max |
|
| R 4 x 2.4 x 1.8 | 4,0±0,12 | 2,4±0,12 |
1,8±0,12 |
4,17 max | 2,23 min | 1,97 max |
|
| R 5.84 x 3.05 x 1.52 | 5,84±0,12 | 3,05±0,12 |
1,52±0,12 |
6,01 max | 2,88 min | 1,69 max |
|
| R 5.84 x 3.05 x 3 |
5,84±0,12 |
3,05±0,12 |
3,00±0,12 |
6,01 max | 2,88 min | 3,20 max |
|
| R 6.3 x 3.8 x 2.5 | 6,30±0,15 | 3,80±0,12 |
2,50±0,12 |
6,50 max |
3,63 min | 2,67 max |
|
| R 8 x 4 x 4 | 8,00±0,18 | 4,00±0,12 | 4,00±0,12 | 8,23 max | 3,83 min | 4,17 max |
|
| R 9.53 x 4.75 x 3.17 | 9,53±0,19 | 4,75±0,12 | 3,17±0,15 | 10,5 max | 3,8 min | 4,1 max |
|
| R 10 x 6 x 3 | 10,0±0,2 | 6,0±0,15 | 3,0±0,15 |
10,8 max |
5,25 min |
3,75 max |
|
| R 10 x 6 x 3.1 | 10,0±0,2 | 6,0±0,15 | 3,1±0,15 | 10,8 max | 5,25 min | 3,9 max |
|
| R 10 x 6 x 4 | 10,0±0,2 | 6,0±0,15 | 4,0±0,15 | 10,8 max | 5,25 min | 4,75 max |
|
|
R 10 x 6 x 7 |
10,0±0,2 | 6,0±0,15 | 7,0±0,15 | 10,8 max | 5,25 min | 7,75 max |
|
| R 12.5 x 7.5 x 5 | 12,5±0,3 | 7,5±0,2 | 5,0±0,15 | 13,6 max | 6,5 min | 5,95 max |
|
| R 12.7 x 7.9 x 6.35 | 12,7±0,3 | 7,9±0,25 | 6,35±0,2 | 13,6 max | 7,1 min | 7,15 max |
|
|
R 13.3 x 8.3 x 5.0 |
13,3±0,3 | 8,3±0,3 | 5,0±0,15 | 14,4 max | 7,2 min | 5,95 max |
|
| R 14 x 9 x 5 | 14,0±0,3 | 9,0±0,25 | 5,0±0,2 | 15,1 max | 7,95 min | 6,0 max |
|
|
R 15 x 10.4 x 5.3 |
15,0±0,5 | 10,4±0,4 | 5,3±0,3 | 16,3 max | 9,2 min | 6,4 max |
|
| R 15.8 x 8.9 x 4.7 | 15,8±0,38 | 8,9±0,25 | 4,7±0,13 | 16,8 max | 8,05 min | 5,45 max |
|
| R 16 x 9.6 x 6.3 | 16,0±0,4 | 9,6±0,3 | 6,3±0,2 | 17,2 max | 8,5 min | 7,3 max |
|
| R 17 x 10.7 x 6.8 | 17,0±0,4 | 10,7±0,3 | 6,8±0,2 | 18,2 max | 9,6 min | 7,8 max |
|
| R 18.4 x 5.9 x 5.9 | 18,4±0,4 | 5,9±0,3 | 5,9±0,3 | 19,5 max | 4,8 min | 6,7 max |
|
| R 20 x 10 x 7 | 20,0±0,4 | 10,0±0,25 | 7,0±0,3 | 21,2 max | 8,95 min | 8,1 max |
|
| R 20 x 10 x 10 | 20,0±0,4 | 10,0±0,25 | 10,0±0,2 | 21,2 max | 8,95 min | 11,0 max |
|
| R 20 x 10 x 15 | 20,0±0,4 | 10,0±0,25 | 15,0±0,4 | 21,2 max | 8,95 min | 16,2 max |
|
| R 20 x 12 x 6 | 20,0±0,5 | 12,0±0,4 | 6,0±0,25 | 21,3 max | 10,8 min | 7,05 max |
|
| R 22.1 x 13.7 x 6.35 | 22,1±0,4 | 13,7±0,3 | 6,35±0,3 | 23,3 max | 12,6 min | 7,4 max |
|
| R 22.1 x 13.7 x 7.9 | 22,1±0,4 | 13,7±0,3 | 7,9±0,3 | 23,3 max | 12,6 min | 9,0 max |
|
| R 22.1 x 13.7 x 12.5 | 22,1±0,4 | 13,7±0,3 | 12,5±0,5 | 23,3 max | 12,6 min | 13,8 max |
|
| R 22.6 x 14.7 x 9.2 | 22,6±0,4 | 14,7±0,2 | 9,2±0,2 | 23,8 max | 13,7 min | 10,2 max |
|
| R 25.3 x 14.8 x 10 | 25,3±0,5 | 14,8±0,5 | 10,0±0,2 | 26,6 max | 13,5 min | 11,0 max |
|
| R 25.3 x 14.8 x 15 | 25,3±0,5 | 14,8±0,5 | 15,0±0,4 | 26,6 max | 13,5 min | 16,2 max |
|
| R 25.3 x 14.8 x 20 | 25,3±0,5 | 14,8±0,5 | 20,0±0,5 | 26,6 max | 13,5 min | 21,3 max |
|
| R 28.0 x 16.0 x 9.0 | 28,0±0,6 | 16,0±0,4 | 9,0±0,4 | 29,4 max | 14,8 min | 10,2 max |
|
| R 29.5 x 19.0 x 14.9 | 29,5±0,7 | 19,0±0,5 | 14,9±0,4 | 31,0 max | 17,7 min | 16,1 max |
|
| R 29.5 x 19.0 x 20.0 | 29,5±0,7 | 19,0±0,5 | 20,0±0,5 | 31,0 max | 17,7 min | 21,3 max |
|
| R 30.5 x 20.0 x 12.5 | 30,5±1,0 | 20,0±0,6 | 12,5±0,4 | 32,1 max | 18,8 min | 13,5 max |
|
| R 34 x 20.5 x 10 | 34,0±0,7 | 20,5±0,5 | 10,0±0,3 | 35,5 max | 19,2 min | 11,1 max |
|
| R 34 x 20.5 x 12.5 | 34,0±0,7 | 20,5±0,5 | 12,5±0,3 | 35,5 max | 19,2 min | 13,6 max |
|
| R 36 x 23 x 15 | 36,0±0,7 | 23,0±0,5 | 15,0±0,4 | 37,5 max | 21,7 min | 16,2 max |
|
| R 38.1 x 19.05 x 12.7 | 38,1±0,5 | 19,05±0,4 | 12,7±0,3 | 39,4 max | 17,85 min | 13,8 max |
|
| R 40 x 24 x 16 | 40,0±1,0 | 24,0±0,7 | 16,0±0,4 | 41,8 max | 22,5 min | 17,2 max |
|
| R 41.8 x 26.2 x 12.5 | 41,8±1,0 | 26,2±0,6 | 12,5±0,3 | 43,6 max | 24,8 min | 13,6 max |
|
| R 50 x 30 x 20 | 50,0±1,0 | 30,0±0,7 | 20,0±0,5 | 51,8 max | 28,5 min | 21,3 max |
|
| R 58.3 x 32 x 18 | 58,3±1,0 | 32,0±0,7 | 18,0±0,5 | 60,1 max | 30,5 min | 19,3 max |
|
| R 58.3 x 40.8 x 17.6 | 58,3±1,0 | 40,8±0,8 | 17,6±0,4 | 60,1 max | 39,2 min | 18,8 max |
|
| R 58.3 x 40.8 x 20.2 | 58,3±1,0 | 40,8±0,8 | 20,2±0,5 | 60,1 max | 39,2 min | 21,5 max |
|
| R 63 x 38 x 25 | 63,0±1,5 | 38,0±1,2 | 25,0±0,8 | 65,3 max | 36,0 min | 26,6 max |
|
| R 68 x 48 x 13 | 68,0±1,2 | 48,0±1,0 | 13,0±0,4 | 70,0 max | 46,2 min | 14,2 max |
|
| R 87 x 54.3 x 13.5 | 87,0±1,5 | 54,3±1,1 | 13,5±0,3 | 89,3 max | 52,4 min | 14,8 max |
|
| R 102 x 65.8 x 15 | 102,0±2,0 | 65,8±1,3 | 15,0±0,5 | 104,8 max | 63,7 min | 16,5 max |
|
| R 140 х 103 х 25 | 140,0±3,0 | 103,0±2,0 | 25,0±1,0 | 143,8 max | 100,2 min | 27,2 max |
|
| R 202 х 153 х 25 | 202,0±4,0 | 153,0±3,0 | 25,0±1,0 | 207,0 max | 149,0 min | 27,5 max |
|
Toroids (ring cores) accessories
Epoxy coated ring cores and accessories is ideal combination for current-compensated chokes. Combination of various wire diameters and hole/pin arrangement offer many alternatives of application.General information for Base plate and Housing for Ring Cores you can see here.
Information for Ordering
Example of EPCOS ordering code structure:
N87 R10*6*4 B64290L0668X038, where:
R10*6*4 — core shape
B64290 — part number (ferrite toroid)
L — coating material ( Parylene - P, Epoxy - L, Uncoated - A)
0668 — type (size) coded
X —dummy character
87 — ferrite material (N87)
Added to cart