When there is limited space or a different shape, U Cores can be used for higher power operation. Critical design elements are low leakage inductance windings on long legs and strong voltage isolation. The cores are available in a variety of sizes: uu9.8, UU10.5, UU1522,UU1620, UU1928, UU2036.
| Geometry | Fig | DIMENSIONS (mm) | Effective Parameters | AL (nH)+30% -20% | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | E1 | E2 | F | G | Le(mm) | Ae(mm²) | CF196 | CF139 | CF124 | ||
| UU9330C | 16C | 93.0±1.8 | 36.2±1.20 | 76.0 ±0.50 | 48.0±0.90 | - | - | - | 30.0±0.60 | - | - | - | - | - | - |
| UUR6440 | 16A | 64.05±1.95 | 23.0min. | 40.5±0.2 | 26.5±0.4 | - | 20.05±0.2 | 5.05±0.25 | 24.0±0.3 | 9.6±0.45 | 210 | 290 | 3200 | 3300 | 3800 |
| UUR5536 | 16B | 54.9±1.1 | 20.0±0.4 | 37.5±0.25 | 25.5±0.4 | 23.5±0.45 | - | - | 36.0±0.7 | 12.0±0.4 | 188 | 418 | 5200 | 5500 | 6400 |
| UU5972 | 16H | 50.5±1.0 | 26.5±1.0 | 35.8±0.2 | 21.9±0.5 | 17±0.4 | - | - | 4.5±0.2 | - | 189 | 210 | 2600 | 2650 | 3200 |
| UU5756 | 16D | 49.8±0.8 | 27.9±1.0 | 28.4±0.2 | 16.0±0.4 | 15.5±0.4 | - | 15.9±0.4 | - | 4.8±0.2 | 163 | 171 | 2350 | 2450 | 2900 |
| UU4718 | 16E | 47.4±0.8 | 19.5±0.6 | 24.5±0.2 | 15.8±0.2 | 13.2±0.3 | - | - | 14.7±0.3 | 18.0±0.4 | 145 | 153 | - | 2450 | - |
| UU4628A | 16C | 46.8±0.70 | 17.0 min | 39.5±0.25 | 25.5±0.75 | - | - | - | 28.0±0.80 | - | 182.8 | 397.7 | - | - | - |
| UU3549 | 16F | 35.0 ±0.50 | 17.3 min | 24.5+0.30 -0.20 | 16.9+0.30 | 9.6±0.30 | -0.20 | - | - | 7.6±0.30 | - | 128.1 | 73 | 1300 | 1400 |
| UU3562 | 16F | 35.25±0.50 | 13.2 min | 30.8±0.30 | 20.5±0.40 | 12.7±0.20 | - | - | 9.30±0.30 | - | 141.4 | 113.5 | 1900 | 2000 | - |
| UU3544 | 16F | 34.75±0.50 | 13.8 min | 21.9±0.30 | 12.5+0.5 | 11.5 ±0.30 | - | - | 9.5±0.30 | - | 108 | 101.6 | 2150 | 2250 | - |
| UU2840 | 161 | 27.8±0.4 | 9±0.4 | 21.2±0.20 | 13.3±0.3 | 11.2 ±0.30 | 13.6±0.4 | 11.2±0.4 | 7.5±0.30 | - | 99.8 | 105 | 2400 | 2500 | - |
| UU2515 | 16G | 25.4±0.40 | 14.5 min | 7.7±0.15 | 4.7±0.20 | 14.9±0.25 | - | - | 7.5 ±0.20 | - | 66.3 | 40.45 | 1300 | 1400 | - |
| UU1910 | 16J | 18.5±0.40 | 7.1 min | 11.6 ±0.20 | 7.3±0.60 | 10.0±0.3 | - | - | 7.0±0.30 | - | 59.6 | 40.22 | 1450 | 1500 | - |
