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Discoidal Ceramic Capacitors


Ceramic Discoidal Feed Through Capacitor

Discoidal Capacitors

Discoidal feed-through ceramic capacitors are the building blocks of the EMI filter industry. API Technologies discoidal capacitors provide great versatility in meeting varied voltage, capacitance and dimensional requirements. Our non-polar, multi-layer capacitors are small, reliable and high in dielectric strength. Operational temperatures of –55°C to +125°C are achieved with no voltage de-rating.

The versatile nature of our discoidals makes them ideally suited for by-pass and filtering applications. Due to their low inductance construction, these capacitors perform extremely well in high frequency applications. The circular geometry of a discoidal feed-through capacitor offers many paths to ground, resulting in lower impedance and better filtering performance.

The low profile and rugged design of our discoidal capacitors offer an excellent alternative to ceramic tubes.

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Features:

  • Excellent high frequency performance
  • Low profile design
  • Rugged construction
  • Low impedance, many paths to ground
  • Low inductance, non-polar
  • AC applications up to 240V
  • DC applications up to 500V
  • -55°C to +125°C operation

Specifications:

Custom Ceramic Capacitors

We offer many variations of discoidal and array capacitors to fit your custom application:

  • Various OD, ID and thickness configurations
  • Pressed discoidals with surface printed terminals
  • Multi-hole discoidal designs
  • Miniature discoidals down to .080" OD
  • Arrays
  • Custom style capability
  • High voltage designs available
  • High temperature designs available

Multilayer Discoidal

Multilayer Ceramic Discoidal

Specifications


Discoidal Electrical Testing

Electrical Parameter Test Method Temperature Coefficient
NP0 X7R Z5U
Temperature Coefficient EIA 198 ±30 ppm/°C,
-55 to +125°C
±15%,
-55 to +125°C
+22, -56%,
+10 to +85°C
Capacitance
Tolerance
EIA Tolerance Code K, M, P K, M, P M, P, Z
Capacitance Test
@ 25°C
MIL-STD-202,
Method 305
Cap = 100 pF: 1 MHz, 1 Vrms
Cap > 100 pF: 1 KHz, 1 Vrms
1 KHz, 1 Vrms 1 KHz, 0.5 Vrms
Dissipation Factor
@ 25°C
MIL-STD-202,
Method 305
0.15% Max 3.5% Max 3.5% Max
Aging Rate
(Per Decade)
  0% <2.0% <3.5%
Insulation
Resistance
@ 25°C
MIL-STD-202,
Method 302
1000 MO · µF
or 100 KMO,
whichever is less
1000 MO · µF
or 100 KMO,
whichever is less
1000 MO · µF
or 100 KMO,
whichever is less
Insulation
Resistance
@ 125°C
MIL-STD-202,
Method 302
100 MO · µF
or 10 KMO,
whichever is less
100 MO · µF
or 10 KMO,
whichever is less
100 MO · µF
or 10 KMO,
whichever is less
Dielectric
Withstanding
Voltage
MIL-STD-202,
Method 301
250% of Rated Voltage,
5 second hold,
30-50 mA
250% of Rated Voltage,
5 second hold,
30-50 mA
250% of Rated Voltage,
5 second hold,
30-50 mA