Cores listed in ascending order of A
Dimensions in bold type are in millimeters, italic numbers are nominal in inches.
| Physical and Magnetic Properties | ||||||
|---|---|---|---|---|---|---|
| Core Size | A | B | C | le (cm) | Ae (cm)2 | Ve (cm)3 |
| FT-23-( ) | 5.84/.230 | 3.05/.120 | 1.52/.060 | 1.340 | .021 | .029 |
| FT-37-( ) | 9.53/.375 | 4.75/.187 | 3.18/.125 | 2.150 | .076 | .163 |
| FT-50-( ) | 12.7/.500 | 7.14/.281 | 4.78/.188 | 3.020 | .133 | .401 |
| FT-50A-( ) | 12.7/.500 | 7.92/.312 | 6.35/.250 | 3.680 | .152 | .559 |
| FT-50B-( ) | 12.7/.500 | 7.92/.312 | 12.7/.500 | 3.180 | .303 | .693 |
| FT-82-( ) | 21.0/.825 | 13.1/.516 | 6.35/.250 | 5.260 | .246 | 1.290 |
| FT-87-( ) | 22.1/.870 | 13.7/.540 | 6.35/.250 | 5.42 | .315 | 1.71 |
| FT-87A-( ) | 22.1/.870 | 13.7/.540 | 12.7/.500 | 5.42 | .511 | 2.77 |
| FT-114-( ) | 29.0/1.142 | 19.0/.750 | 7.49/.295 | 7.420 | .375 | 2.783 |
| FT-114A-( ) | 29.0/1.14 | 19.0/.750 | 13.8/.545 | 7.420 | .690 | 5.120 |
| FT-140-( ) | 35.6/1.40 | 23.0/.900 | 12.7/.500 | 9.020 | .806 | 7.270 |
| FT-140A-( ) | 35.6/1.40 | 23.0/.900 | 15.0/.590 | 9.020 | .951 | 8.580 |
| FT-150-( ) | 38.1/1.50 | 19.0/.750 | 6.35/.250 | 8.30 | 0.57 | 4.73 |
| FT-150A-( ) | 38.1/1.50 | 19.0/.750 | 12.7/.500 | 8.30 | 1.15 | 9.55 |
| FT-193-( ) | 49.1/1.932 | 31.8/1.250 | 15.9/.625 | 12.3 | 1.19 | 14.7 |
| FT-193A-( ) | 49.1/1.932 | 31.8/1.250 | 19.0/.750 | 12.3 | 1.46 | 18.0 |
| FT-240-( ) | 61.0/2.40 | 35.6/1.40 | 12.7/.500 | 14.4 | 1.57 | 22.61 |
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