Electronic Components Blog

Monday, 02 July 2012 14:13

High voltage and high capacitance radial capacitors

High voltage and high capacitance radial capacitors

The demand for high voltage components, particularly for high reliability applications, is increasing. In many industries, high voltage power supplies are essential, especially in the medical, telecoms, communications, military and aerospace sectors. To meet this expanding demand, Syfer Technology has extended its range of high voltage radial capacitors.

In addition, for long term reliability and product continuity reasons, traditional and new designs are often manufactured using conventional through-hole assembly techniques. Although larger in size than equivalent surface mount devices, radial capacitors can take less board space as they are side mounted. They can also be less susceptible to mechanical damage and vibration. Devices are offered in both C0G/NP0 and X7R dielectrics, and take advantage of Syfer's expertise in multilayer ceramic technology. The range starts with the 8111M series, in voltages up to 630V offering capacitances from 4.7pF to 270pF (C0G) and up to 500V in capacitances from 100pF to 8.2nF (X7R). At the top of the range is the 8171M series extending to 5kV with capacitances of 3.3nF (C0G) and 18nF (X7R). For specialist applications, Syfer offers custom designs up to 10kV, on demand. Such high voltage parts are essential for some medical equipment, for example, such as X-ray and scanner systems. Specific applications in growing markets include aircraft power generation, aircraft emergency egress lighting, and power supplies for X-ray equipment and scanners. Standard ranges are RoHS compliant, and supplied with tin terminations. For applications currently exempt from the RoHS directive, tin-lead wire versions are available. Syfer is one of very few suppliers of IECQ-CECC approved radial lead capacitors, available for products up to 200V, often mandatory for European aerospace applications. In addition, Syfer can offer additional screening, such as 100% burn-in.

Related Solutions

  • Miniaturization of HV applications: a solution for every Power Electronics Engineer

    StackiCap™ has been set to revolutionise the world of large, HV(200V – 2kV), X7R Multilayer Chip Capacitors (MLCCs)!

    It dramatically increases the max capacitance values within a size/voltage or can reduce chip sizes. They take up 1/10th of the current footprint dimension and save up to 9/10th of the weight of a stacked cap. The advantages are spectacular on any HV products where pcb space is at a premium and max. capacitance is required in a smaller footprint. Typical applications include power supplies, projector modules, lighting systems and throughout the aerospace sector.

  • High Voltage SM Capacitors

    Is High Voltage in relatively small case sizes a great issue for you?  ProtectiCap™ of Syfer will open a lot of oppertunities. The integral coating of this capacitor series minimizes the risk of flashover from one termination of the chip to the other, without any requirement for the customer to apply conformal coating after soldering.

  • Ultra-low ESR MLCC capacitors

    How to solve your Low Loss performance below 3 GHz?  The Ultra-low ESR range can offer you a very stable, High-Q material system that provides excellent specifications. Available with various termination options including FLEXICAP, this range of high frequency capacitors is suitable for many applications where economical, high performance is required.

Supplier

  • Syfer

    Syfer Technology Limited is dedicated to the manufacturing of multilayer ceramic components. It's comprehensive product range includes high volume ceramic chip capacitors through to application specific capacitor assemblies and highly complex planar arrays. Syfer also designs and manufacture a range of EMI filters including threaded and solder in panel-mounted styles as well as surface mount devices for pcb applications.

Related Blog messages

  • Ceramic Technology offer 10nF Safety Certified MLCCs

    MLCC’s have been used in automotive applications for years, but the big change being seen is the voltage rating and size of components now being used.  This new revolution in MLCC technology, used in control electronics, is being driven by modern on-board charging systems - PHEV & EV where mains ac is involved.  Knowles brand Syfer has responded to demands by increasing its range of 250V ac X1/Y2 Safety Certified capacitors to 10nF.

  • Knowles Capacitors update

    In 2014 Dielectric Laboratories (DLI), Novacap, Syfer Technology and Voltronics came together into a single organisation, Knowles Capacitors. With a combined history exceeding 175 years, and operating as a division of Knowles Corporation of USA, Knowles Capacitors was a merging of some of the world’s leading speciality capacitor manufacturers. The Precision Devices division of Knowles is a $200m+ global manufacturer of precision capacitors, components and crystal oscillators.

  • Syfer "H" Series for High Temp. and High Freq. Applications

    Knowles Capacitors brand, Syfer, has just released a new addition to its range of High-Q MLCCs. Designated as the “H” series they are manufactured from a very stable, X8G High Q ceramic dielectric to provide Ultra-low ESR, with excellent low loss performance and low power consumption, in high environmental temperature and high frequency systems. They exhibit no ageing effects, with stability under voltage and very low drift.