Doorknob Capacitors10kV to 50kV
The Genvolt DXU range of Doorknob Capacitors (also referred to as a high voltage capacitor) offer output voltages from 10kV up to 50kV to meet the most stringent requirements of high voltage applications.
These high voltage ceramic capacitors are made from a ceramic dielectric and are then encapsulated in epoxy resin. The terminal threads on the capacitors are either M4 or M5, depending on model, with a thread depth of 4mm.
With capacitance values starting at 280pF (A picofarad 'pF' is one trillionth of a Farad) and then rising up to 8000pF and DC (Direct Current) voltage ratings from 10kV to 50kV depending on the model chosen.
As a high power capacitor they are designed for applications which require a low dissipation factor and a small voltage coefficient, they have excellent temperature characteristics a low partial discharge and a large capacitance.
The operating temperature range of the capacitors is between -20 to +85°C with a temperature coefficient of -4700 ±1000 ppm/°C.
The insulation resistance should be measured with DC 1000V within 60 ±5 seconds of charging.
Some common applications are:
Gas laser
DC HV power supplies
Lightning arresters
Voltage distribution systems
Electron Microscopes
Synchroscopes
Electrostatic Coating Machines
Doorknob Capacitor Features;
- Small size
- Low dissipation factor
- Epoxy resin encapsulated
- Low DC, AC - voltage coefficient
- Excellent voltage characteristics
- Linear temperature characteristic
- Excellent behaviour on pulse and fast discharge
Doorknob Capacitor Applications
- Gas laser
- Power generators
- High voltage dividers
- High voltage coupling devices
- Electrostatic coating machines
- Electron microscopes, synchroscopes
- Direct current high voltage power supplies
- Lightning arresters, voltage distribution systems
- Power line coupling system for internet and telecom
Doorknob Capacitor Values
Part No. | Capacitance (pF) | Capacitance Tolerance % |
DC Rated Voltage (kV) | Dimensions | Terminal Type Thread & Depth |
||
D | L | H | |||||
DXU-10-561 | 560 | ± 10 | 10 | 24 | 20 | 18 | M4x4mm |
DXU-10-122 | 1200 | ± 10 | 10 | 30 | 20 | 18 | M4x4mm |
DXU-10-282 | 2800 | ± 10 | 10 | 40 | 20 | 18 | M5x4mm |
DXU-10-502 | 5000 | ± 10 | 10 | 52 | 20 | 18 | M5x4mm |
DXU-10-802 | 8000 | ± 10 | 10 | 60 | 16 | 14 | M5x4mm |
DXU-20-281 | 280 | ± 10 | 20 | 24 | 26 | 24 | M4x4mm |
DXU-20-881 | 880 | ± 10 | 20 | 30 | 26 | 24 | M4x4mm |
DXU-20-142 | 1400 | ± 10 | 20 | 40 | 26 | 24 | M4x4mm |
DXU-20-252 | 2500 | ± 10 | 20 | 52 | 26 | 24 | M5x4mm |
DXU-20-402 | 4000 | ± 10 | 20 | 60 | 26 | 24 | M5x4mm |
DXU-30-591 | 590 | ± 10 | 30 | 30 | 30 | 28 | M4x4mm |
DXU-30-941 | 940 | ± 10 | 30 | 40 | 30 | 28 | M5x4mm |
DXU-30-172 | 1700 | ± 10 | 30 | 52 | 30 | 28 | M5x4mm |
DXU-30-272 | 2700 | ± 10 | 30 | 60 | 30 | 28 | M5x4mm |
DXU-40-441 | 440 | ± 10 | 40 | 30 | 32 | 30 | M4x4mm |
DXU-40-701 | 700 | ± 10 | 40 | 40 | 32 | 30 | M5x4mm |
DXU-40-132 | 1300 | ± 10 | 40 | 52 | 32 | 30 | M5x4mm |
DXU-40-202 | 2000 | ± 10 | 40 | 60 | 32 | 28 | M5x5mm |
DXU-50-401 | 400 | ± 10 | 50 | 30 | 35 | 33 | M4x4mm |
DXU-50-651 | 650 | ± 10 | 50 | 36 | 35 | 33 | M4x4mm |
DXU-50-911 | 910 | ± 10 | 50 | 40 | 33 | 31 | M4x4mm |
DXU-50-112 | 1100 | ± 10 | 50 | 52 | 35 | 33 | M5x4mm |
DXU-50-172 | 1700 | ± 10 | 50 | 59 | 35 | 33 | M5x4mm |