TOROIDAL CORES
Toroid mounts
In general, toroidal cores are the most efficient of any core configuration. Toroid mounts are highly self- Shielding since most of the flux lines are contained within the core. The flux lines are essentially uniform over the entire length of the magnetic path and consequently stray magnetic fields will have very little effect on a toroidal inductor. It is seldom necessary to shield a toroidal inductor.
Characteristics of Toroid mounts
- Lowest costs.
- Good for low frequency application (<10OKhz).
- High maximum flux density: 15,000 gauss
- Inductance tolerance ≤10%.
Application of Toroid mounts
For design frequency below 300 KHz, powdered iron core is a prefered choice for RF circuits, DC powder supply chokes, motors, dimmer control filters and other EMI/RFI circuits.

| TYPE |
AL |
OD |
ID |
Ht |
Le |
Ae |
Ve |
| YT50-60D core |
59.0 |
12.7 |
7.70 |
6.53 |
3.19 |
.223 |
.711 |
| YT50-75AD core |
66.0 |
12.7 |
7.70 |
6.53 |
3.19 |
.223 |
.711 |
| YT51-35C core |
37.0 |
12.7 |
5.80 |
6.35 |
2.79 |
.223 |
.622 |
| YT51-55C core |
55.0 |
12.7 |
5.80 |
6.35 |
2.79 |
.223 |
.622 |
| YT51-75C core |
83.0 |
12.7 |
5.80 |
6.35 |
2.79 |
.223 |
.622 |
| YT51-60C core |
67.0 |
12.7 |
5.80 |
6.35 |
2.79 |
.223 |
.622 |
| YT51-75AC core |
75.0 |
12.7 |
5.80 |
6.35 |
2.79 |
.223 |
.622 |
| YT60-35 core |
19.0 |
15.2 |
8.53 |
5.94 |
3.74 |
.187 |
.699 |
| YT60-55 core |
34.5 |
15.2 |
8.53 |
5.94 |
3.74 |
.187 |
.699 |
| YT60-75 core |
50.0 |
15.2 |
8.53 |
5.94 |
3.74 |
.187 |
.699 |
| YT60-60 core |
41.5 |
15.2 |
8.53 |
5.94 |
3.74 |
.187 |
.699 |
| YT60-75A core |
47.0 |
15.2 |
8.53 |
5.94 |
3.74 |
.187 |
.699 |
| YT60-75D core |
97.0 |
15.2 |
8.53 |
11.9 |
3.74 |
.374 |
1.40 |
| YT60-75AD core |
94.0 |
15.2 |
8.53 |
11.9 |
3.74 |
.374 |
1.40 |
| YT68-35 core |
19.5 |
17.5 |
9.40 |
4.83 |
4.23 |
.179 |
.759 |
| YT68-55 core |
29.0 |
17.5 |
9.40 |
4.83 |
4.23 |
.179 |
.759 |
| YT68-75 core |
43.5 |
17.5 |
9.40 |
4.83 |
4.23 |
.179 |
.759 |
| YT68-60 core |
35.0 |
17.5 |
9.40 |
4.83 |
4.23 |
.179 |
.759 |
| YT68-75A core |
40.0 |
17.5 |
9.40 |
4.83 |
4.23 |
.179 |
.759 |
| YT68-35A core |
26.0 |
17.5 |
9.40 |
6.35 |
4.23 |
.242 |
1.03 |
| YT68-55A core |
39.5 |
17.5 |
9.40 |
6.35 |
4.23 |
.242 |
1.03 |
| YT68-75A core |
58.0 |
17.5 |
9.40 |
6.35 |
4.23 |
.242 |
1.03 |
| YT68-60A core |
47.0 |
17.5 |
9.40 |
6.35 |
4.23 |
.242 |
1.03 |
| YT68-75AA core |
54.0 |
17.5 |
9.40 |
6.35 |
4.23 |
.242 |
1.03 |
| YT68-75D core |
87.0 |
17.5 |
9.40 |
9.53 |
4.23 |
.358 |
1.52 |
| YT68-60D core |
70.0 |
17.5 |
9.40 |
9.53 |
4.23 |
.358 |
1.52 |
| YT68-75AD core |
80.0 |
17.5 |
9.40 |
9.53 |
4.23 |
.358 |
1.52 |
| YT72-35 core |
36.0 |
18.3 |
7.11 |
6.60 |
4.01 |
.349 |
1.40 |
| YT72-55 core |
60.0 |
18.3 |
7.11 |
6.60 |
4.01 |
.349 |
1.40 |
| YT72-75 core |
90.0 |
18.3 |
7.11 |
6.60 |
4.01 |
.349 |
1.40 |
| YT72-60 core |
71.0 |
18.3 |
7.11 |
6.60 |
4.01 |
.349 |
1.40 |
| YT72-75A core |
82.0 |
18.3 |
7.11 |
6.60 |
4.01 |
.349 |
1.40 |
| YT80-35 core |
18.0 |
20.0 |
12.6 |
6.35 |
5.14 |
.231 |
1.19 |
| YT80-55 core |
31.0 |
20.0 |
12.6 |
6.35 |
5.14 |
.231 |
1.19 |
| YT80-75 core |
46.0 |
20.0 |
12.6 |
6.35 |
5.14 |
.231 |
1.19 |
| YT80-60 core |
39.5 |
20.0 |
12.6 |
6.35 |
5.14 |
.231 |
1.19 |
| YT80-75A core |
42.0 |
20.0 |
12.6 |
6.35 |
5.14 |
.231 |
1.19 |
| YT80-35B core |
29.5 |
20.2 |
12.6 |
9.53 |
5.14 |
.347 |
1.78 |
| YT80-55B core |
46.5 |
20.2 |
12.6 |
9.53 |
5.14 |
.347 |
1.78 |
| YT80-75B core |
71.0 |
20.2 |
12.6 |
9.53 |
5.14 |
.347 |
1.78 |
| YT80-60B core |
59.0 |
20.2 |
12.6 |
9.53 |
5.14 |
.347 |
1.78 |
| YT80-75AB core |
63.0 |
20.2 |
12.6 |
9.53 |
5.14 |
.347 |
1.78 |
| YT80-75D core |
92.0 |
20.2 |
12.6 |
12.7 |
5.14 |
.453 |
2.33 |
| YT80-60D core |
79.0 |
20.2 |
12.6 |
12.7 |
5.14 |
.453 |
2.33 |
| YT80-75AD core |
83.0 |
22.9 |
14.0 |
9.53 |
5.78 |
.395 |
2.28 |
| YT90-35 core |
30.0 |
22.9 |
14.0 |
9.53 |
5.78 |
.395 |
2.28 |