High Voltage
Disc Ceramic Capacitor
D Series
FEATURES
CAPACITOR OUTLINE DRAWING
Disc ceramic capacitors made under strict quality control proce-
dures are a reliable component. Special attention is given to the
ceramic pressing operation to assure high and uniform ceramic
density.
These parts are manufactured for the quality conscious customer.
Parts are available screened to MIL-PRF-49467 established relia-
bility specification.
INSTALLATION
Higher-voltage parts may require further encapsulation to prevent surface breakdown. Parts should be cleaned and oven dried
at 85°C before further encapsulation. Silicone rubbers or an epoxy may be used. De-airing of encapsulants is recommended.
We recommend that a heat sink be attached to the lead between the soldering iron and the capacitor during installation sol-
dering. Testing of higher-voltage parts before encapsulation may be done in a suitable dielectric fluid such as Freon.
DIELECTRIC COMPARISON
CERAMIC TYPE
Dissipation Factor
C0G (NP0)
0.1%
X7R
2.5%
±15%
X5U
2.5%
Temperature Coefficient
±30ppm/ºC
+22% -56%
Voltage Coefficient
0
-20%
N/A
Dielectric Withstanding
Voltage Test
3 to 15kV at 1.5x rated,
20 to 50kV at rated +10kV
3 to 15kV at 1.5x rated,
20 to 50kV at rated +10kV
3 to 15kV at 1.5x rated,
20 to 50kV at rated +10kV
100k megohms or
1k megohms-μF,
whichever is less
100k megohms or
1k megohms-μF,
whichever is less
10k megohms or
100 megohms-μF,
whichever is less
Insulation Resistance
(25ºC)
Operating Temperature
Range (rated voltage)
-55ºC to +125ºC
-55ºC to +125ºC
-55ºC to +85ºC
Thickness:
Inches (mm) max.
3kV = 0.15 (3.81)
5kV = 0.20 (5.08)
Lead Type: Solder plated, copper-clad steel (CCFE)-
D30, D40: 0.025” (22GA)
7.5kV = 0.28 (7.11)
10kV = 0.35 (8.89)
15kV = 0.45 (11.43)
20kV = 0.55 (13.97)
30kV = 0.95 (24.13)
40kV = 1.20 (30.48)
50kV = 1.50 (38.10)
D50 & Larger: 0.032” (20GA)
PART NUMBER AND ORDERING INFORMATION
30
D50
W
122
M
M
Q
No Leads
Voltage
30 =3000V
100 =10,000V
etc.
Add to part number if required
Group A Screening*
Add to part number if required
*MIL-PRF-49467 (subgroup 1)
except Corona
Style
D50, etc.
Dielectric
N = C0G (NP0)
W = X7R
Tolerance
J = ±5% C0G (NP0)
K = ±10%
M = ±20%
P = 0/+100%
Z = -20%/+80%
Y = X5U
MARKING
(D30)
301M
3kV
KEC
(All Other Sizes)
D50W122M
3kV
Capacitance Value
First two digits are significant,
last digit is number of zeroes,
i.e., 472=4700pF
KEC
Date Code
Date Code
© KEMET Electronics Corporation • PO Box 5928 • Greenville, SC 29606 • www.kemet.com
49
KEMET [ KEMET CORPORATION ]
