SPECTRUM CONTROL INC. 8031 Avonia Rd. Fairview, PA 16415 Phone: 814-835-1650 Fax: 814-835-1651 Web site: www.spectrumcontrol.com
SPECTRUM CONTROL GmbH Hansastrasse 6 91126 Schwabach, Germany Phone: (49)-9122-795-0 Fax: (49)-9122-795-58
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Discoidal
Feed-thru Capacitors
Ceramic discoidal feed-thru capacitors are the building
blocks of the EMI filter industry. Spectrum Control
Technology Inc. discoidal capacitors provide great
versatility in meeting varied voltage, capacitance and
dimensional requirements. Our non-poplar, multi-layered
capacitors are small, reliable and high in dielectric
strength. Operational temperatures of -55°C
to +125°C are achieved with no voltage derating.
The versatile nature of our discoidals makes them
ideally suited for by-pass, filtering and coupling. These
capacitors perform extremely well in high frequency
applications due to their low inductance construction.
The low profile and rugged design of our discoidal
capacitors offer an excellent alternative to ceramic tubes.
Features
s
Excellent high frequency performance
s
Low profile design
s
Rugged construction
s
Low inductance, non-polar
s
AC applications up to 240V
s
-55°C to +125°C operation
Electrical Specifications
Capacitance . . . . . . NPO, BX, X7R 1 volt RMS 1 KHz
. . . . . . . . . . . . . . Z5U
.5 volt RMS 1 KHz
Dissipation Factor . . NPO .15% max. @ 1 volt RMS
. . . . . . . . . . . . . . X7R 3.5% max. @ 1 volt RMS
. . . . . . . . . . . . . . BX
2.5% max. @ 1 volt RMS
. . . . . . . . . . . . . . Z5U 3.5% max. @ 1 volt RMS
Dielectric
Withstanding
Voltage . . . . . . . . . . 250% of rated voltage, 5 seconds,
. . . . . . . . . . . . . . charging current 30-50 milliamperes
Insulation
Resistance . . . . . . . 25°C - 1000 meg ohm microfarad or
. . . . . . . . . . . . . . 100,000 meg ohm, whichever is less.
. . . . . . . . . . . . . . 125°C - 100 meg ohm microfarad or
. . . . . . . . . . . . . . 10,000 meg ohm, whichever is less.
Operating
Temperature . . . . . . -55°C to +125°C
Temperature
Characteristics . . . . NPO ± 30 ppm/°C
. . . . . . . . . . . . . .
over temperature range
. . . . . . . . . . . . . . X7R ± 15% from
. . . . . . . . . . . . . .
-55°C +125°C
. . . . . . . . . . . . . . BX
meets MIL-C-39014
. . . . . . . . . . . . . . Z5U +22%, -56% from
. . . . . . . . . . . . . .
+10°C to +85°C
Metallization
Standard metallization is solderable silver.
Other metallizations are available on request.
Multilayer
Discoidal
Dielectric
thickness
Discoidal capacitor
Overlap
area
I.D.
Electrodes
Ceramic
dielectric
O.D.
Insertion Loss
70
60
50
40
30
20
10
0
Insertion Loss (db)
Per MIL-STD-220
Curve
1
2
3
4
5
6
7
8
9
10
1000
100
10
1
01
0
Frequency (MHz)
1000pF
2700pF
5000pF
01uF
027uF
056uF
1uF
27uF
56uF
1.4uF
1002 Reader's 6/21/99 12:51 PM Page 37