Holy Stone Capacitors for Telecommunications Applications
Holy Stone manufactures a broad line of multilayer ceramic capacitors (MLCCs) used in the telecommunications industry. Applicable market segments include mobile devices, IP telephony, LAN and WAN networking, cable modems, Ethernet devices, triple play, All-in-One printers, set-top boxes, receivers, and Over-The-Air equipment. Available Temperature Coefficients are ultra-stable Class I COG/NPO, and Class II X7R for greater capacitance/voltage density as well as X7T and X7P dielectrics for greater capacitance density and improved DC Bias characteristics. The Class I and Class II MLCC devices are available in sizes from 0603 up to 2225, at voltages from 100vdc to 5KVdc. Superterm® flexible termination is available upon request. This option incorporates a polymer layer in the termination structure which effectively absorbs external stresses and therefore reduces the incidence of potential product cracking. An open-mode product design is also available as a customized option – this specialized internal electrode design reduced the possibility of a short circuit due to cracking under high mechanical or thermal stress conditions. A world leader in Safety-Rated capacitors, Holy Stone also offers X1/Y2 and X2 capacitors for safety circuits. Example applications include:
- Surge and line protection
- Series and parallel busses
- Tip and Ring
- All power circuits
Please see the below schematic and reference for a design example in a Tip and Ring circuit:
HCT Series Multilayer Ceramic Capacitors
250V to 630V High Voltage & Low DC Bias
Holy Stone high voltage products are designed and manufactured to meet the general requirements of international standards. The X7T product offering is ideally suited for LED drivers, lighting, power adapter, and USB charger applications where effective capacitance at working voltage is critical to circuit design.
Summary of Specifications
|-55℃ to +125 ℃
|250Vcd, 400Vcd, 450Vcd and 630Vcd
|+22/-33% at -55℃ ~ +125 ℃
|10nF ~ 0.68uF, other capacitance values available upon request
2.5% max at 1KHz 25 ℃
|10GΩ or 500CΩ, whichever is smaller
|1.5 x WVDC for 5 sec.
How To Order
Capacitance Range (preferred values)
- Other dimensions, capacitance values, and voltage ratings are available on request. Please contact Holy Stone.
DC Bias Characteristics