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Some Syfer high voltage multilayer ceramic capacitors now
offer double the capacitance thanks to breakthroughs in
ceramic materials and manufacturing technology. The ability
to reduce package size, or increase capacitance range in the
same package size, will prove critical to meet today’s tight
design constraints.
Already one of the most extensive high-voltage capacitor families
available, Syfer now offers higher values. In most case sizes from
0805 to 1812, for example, Syfer offers the highest capacitance
1kV MLCCs in the market. Devices in the range from 500V to 1.5kV
are of particular interest to power supply and DC/DC converter
designers in the telecoms, military and aerospace markets.
Higher capacitance is available without increasing package size; the
1206 1.5kV capacitor, for example, now offers an impressive 10nF,
up from 2.7nF. Many devices offer double the capacitance of earlier
versions. The 1812 1kV device has increased from 56nF to 100nF.
If physical space is critical, Syfer’s new devices offer the possibility of
a smaller case size, resulting in reduced board space requirements
and lower costs. For example, a 1kV, 1nF capacitor previously
offered in a 1206 package is now available in the 0805 case size
and a 1kV 10nF part, previously in a 1812 footprint, is now offered
in a 1206 package.
These extensions give engineers a broader choice of high-voltage
devices to optimise their designs for performance and package
size, while ensuring they are cost effective to meet tight budgetary
constraints.
For added reliability, Syfer offers its FlexiCap™ polymer-termination
option as an alternative to a standard plated termination. Syfer
received the Queen’s Award for Innovation, the most coveted
commercial award in the UK, for this development in 2008.
FlexiCap accommodates a greater degree of board flex than a
conventional termination and reduces the chance of mechanical
cracking. Devices meet RoHS standards with lead-free terminations.
However, for exempt applications, versions with tin-lead contacts
are available. Syfer can also offer additional testing services to meet
the most stringent quality standards.
Smaller Case Size Equivalents
Features
U Some capacitance values up to four times higher
U C0G and X7R dielectrics for 500V to 6kV rated MLCCs
U More choice for designers:
- Increase capacitance values without increasing
board space
- Choose a smaller case size, without reducing
capacitance value
U Reduced board space
U Lower component cost
U FlexiCap termination option enhances reliability and
long term performance
Applications
U Telecoms
U Power supplies
U DC-DC converters
U Communications equipment
U Military and aerospace
For further information, including a Free high voltage Sample Kit and
the MLCC Soldering and Handling Guide, please complete the reply
slip or visit http://www.arrowne.com/innov/in215/f_1414.shtml
High Voltage, Multilayer Ceramic Capacitors
13
PASSIVE
SOLUTIONS
Downsize with smallest high-voltage MLCCs
ENQUIRY 1414
Free Syfer high voltage Sample Kit and the MLCC
Soldering and Handling Guide available! Please
complete the reply slip or visit the weblink below.
Type Voltage Capacitance Previous Case Size
0805KY00102KXT
1kV 1nF 1206
0805Y1K00472KXT
1kV 4.7nF 1206
1206Y100103KXT
1kV 10nF 1812
1206Y1K00273KXT
1kV 27nF 1210
1812Y1K00104KXT
1kV 15nF 1825/2220