1812J1000682MCTE03 Syfer, 1812J1000682MCTE03 Datasheet - Page 21

• Manufacturer Part Number: 1812J1000682MCTE03
• Description: EMI Filters 1812 .0068uF 100V C0G 20% X2Y Filter
• Manufacturer: Syfer

Specifications of 1812J1000682MCTE03

• Product Category: EMI Filters
• Rohs: yes

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Discoidal capacitors are at the heart of many EMI filters. More
robust and reliable than tubular capacitors, they offer higher
capacitance options, with values up to several microfarads.
In addition to standard configurations, Syfer is able to meet
customers’ specific drawings in terms of electrical performance
and mechanical design.
Discoidal multilayer ceramic capacitors are of a configuration
suitable for direct mounting into filters, onto bulkheads and
hybrid circuits. Due to their geometry, they have excellent RF
performance characteristics as well as very high self resonant
frequencies. They are offered with a choice of C0G/NP0 or
X7R ceramic, or in MOV (metal oxide varistor) material for
voltage protection applications.
Varistor planar arrays and varistor discoidals
Varistor planar arrays and varistor discoidals provide a dual
function. The use of metal oxide based ceramic (MOV)
provides the voltage protection, with bi-directional clamping,
while the inherent capacitance, due to the multilayer
construction, ensures effective lowpass EMI filtering up to at
least 1GHz.
Based on typical hole diameter of 0.8mm, and X7R dielectric.
Discoidal multilayer capacitors
3500
3000
2500
2000
1500
1000
500
0
Typical capacitance vs disc size vs voltage
Fired Ceramic Dielectric
50
100
Rated voltage dc
Terminations
Metal Electrodes
200
8.75mm Ø
5mm Ø
3mm Ø
500
General Specification
Dielectrics:
C0G/NP0, X7R, MOV
Mechanical:
Outer diameter 2.0mm minimum
Inner diameter 0.5mm minimum
Minimum wall thickness requirements apply
Refer to factory
Capacitance range:
pF to µF
Capacitance tolerance:
±5%, ±10%, ±20%, -0%+100%
Voltage:
50V to 3kVdc or higher
Operating temperature range:
C0G/NP0, X7R, MOV, -55°C to +125°C
Termination options:
Silver-palladium (AgPd), silver-platinum (AgPt), gold over nickel
To reflect the unique custom nature of discoidals and
planar arrays, we do not list a standard range, but ask
you to contact the sales office to discuss your specific
requirement.
Manufacturing to customer designs or working together with the customer to develop a solution to a problem, Syfer offer the
ability to modify standard filter designs or develop custom designs to suit your application.
Modifications to standard filters
Special mechanical outline
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Special electrical testing
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Special discrete filters to match your specific requirements
Manufactured to fit the customers specific requirements, electrical characteristics and space envelope. We can offer design
solutions to meet your requirement or develop customer designs into production reality.
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Multiway filter assemblies
From a simple panel fitted with our single line discrete filters to a complex custom designed Pi filter assembly, we offer a full
design and manufacture service. Assemblies can be based around discoidal capacitors for maximum flexibility or planar arrays for
optimum space utilisation.
As an extension to our planar array range, we can offer soldered-in spring retaining clips for easy assembly into difficult
applications such as hermetic sealed connectors and our extensive experience with filter connectors allows us to offer sub contract
manufacturing to this industry sector.
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Please contact our sales office to discuss your specific filtering requirement. We would be pleased to provide a technical and
commercial proposal.
Typical examples:
Lead lengths to suit
Special thread options – e.g. M5 x 0.5 – 6g
Special lead forms – e.g. headed pin / threaded
contact
Larger pin diameters
Special body or pin finishes
Typical examples:
Special test voltages – e.g. 500Vac 50Hz DWV test
Special capacitance values
100% burn-in
Higher current ratings possible
Example 1
Battery terminal filter to meet precise environmental
requirements and provide flat pin contact surface
for connection to spring contacts on clip-on batteries.
Designed to fit customers space envelope and meet
specific electrical parameters.
Example 2
Special SFSSC disc-on-pin decoupling stub filter for
military application. Contact pin terminating inside
discoidal and insulated from non pin side. Assembled with
high melting point solder to allow customer to solder into
panel.
Example 1
4 way 22nF C section planar based filter assembly. DWV 2500Vdc, 100% tested. Supplied to sensor manufacturer for
installation into commercial aerospace application.
Example 2
85 way 1800pF L-C section planar based filter assembly, fitted into mounting plate for easy assembly. Designed to fit specific
space envelope for military aerospace application
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Special filters and assemblies
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