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Air Plate Trimmers
Air plate trimmers are a type of variable capacitor used for fine-tuning radio-frequency (RF) circuits. They use air as the dielectric (insulating medium) between metal plates, which makes them very stable and low-loss compared to many other capacitor types.
Air has properties that make it ideal for RF tuning due to Very low dielectric loss → better RF efficiency, High-Q factor (important for tuned circuits), very stable with temperature, no dielectric absorption, and can handle relatively high voltages.
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| Part-No. | Height (mm) | Weight (mm) | Cmin (pF) | Cmax (pF0 | # of Plates Stator/Rotor | Air Gap | Voltage Rating VDC | Datasheet [pdf] |
| PPI-10-2421-40020-000 | 18.9 | 27.0 | 3.5 | 23.0 | 3/4 | 0.40 | 750 |  |
| PPI-10-2421-40050-000 | 25.9 | 32.0 | 4.5 | 50.0 | 7/8 | 0.40 | 750 | |
| PPI-10-2421-40070-000 | 29.1 | 36.0 | 6.0 | 70.0 | 10/10 | 0.40 | 750 | |
| PPI-10-2421-40090-000 | 34.7 | 41.0 | 6.5 | 93.0 | 13/14 | 0.40 | 750 | |
| PPI-10-2421-40140-000 | 45.3 | 43.0 | 8.6 | 142.0 | 19/20 | 0.40 | 750 | |
| PPI-10-3411-50020-000 | 3.5 | 24.0 | 17.9 | 37.0 | 3/3 | 0.50 | 750 | |
| PPI-10-3411-50050-000 | 4.5 | 50.0 | 23.3 | 44.0 | 6/6 | 0.50 | 750 | |
| PPI-10-3411-50100-000 | 7.5 | 100.0 | 34.5 | 56.0 | 12/12 | 0.50 | 750 | |
| PPI-10-3411-50140-000 | 10.0 | 146.0 | 43.1 | 64.0 | 17/17 | 0.50 | 750 | |
| PPI-10-3411-81013-000 | 4.5 | 13.5 | 27.0 | 39.0 | 4/4 | 1.40 | 1800 | |
| PPI-10-3411-81030-000 | 6.5 | 29.0 | 42.0 | 60.0 | 9/8 | 1.40 | 1800 | |
| PPI-10-3412-95026-901 | — | 134 | 11.0 | 26.0 | — | 2.15 | 3500 | |
| PPI-10-3412-50020-000 | 20.6 | 39 | 3.5 | 24 | 2×3/3 | 0.50 | 750 | |
| PPI-10-3412-50050-000 | 23.8 | 46 | 4.5 | 50 | 2×6/6 | 0.50 | 750 | |
| PPI-10-3412-50100-000 | 34.1 | 60 | 7.5 | 100 | 2×12/12 | 0.50 | 750 | |
| PPI-10-3412-50140-000 | 43.1 | 68 | 10 | 146 | 2×17/17 | 0.50 | 750 | |
| PPI-10-3412-81012-000 | 27 | 49 | 4.5 | 13.5 | 2×4/4 | 1.40 | 1800 | |
| PPI-10-3412-81022-000 | 38 | 61 | 6 | 24 | 2×7/7 | 1.40 | 1800 | |
| PPI-10-3412-81030-000 | 42 | 70 | 7 | 30 | 2×9/8 | 1.40 | 1800 | |