© KEMET Electronics Corporation • PO Box 5928 • Greenville, SC 29606 • www.kemet.com 49
High Voltage
Disc Ceramic Capacitor
D Series
Capacitance Value
First two digits are significant,
last digit is number of zeroes,
i.e., 472=4700pF
Voltage
30 =3000V
100 =10,000V
etc.
Tolerance
J = ±5% C0G (NP0)
K = ±10%
M = ±20%
P = 0/+100%
Z = -20%/+80%
PART NUMBER AND ORDERING INFORMATION
Style
D50, etc.
Dielectric
N = C0G (NP0)
W = X7R
Y = X5U
Group A Screening*
Add to part number if required
*MIL-PRF-49467 (subgroup 1)
except Corona
30 D50 W 122 M M Q
Thickness: 3kV = 0.15 (3.81) Lead Type: Solder plated, copper-clad steel (CCFE)-
Inches (mm) max. 5kV = 0.20 (5.08) D30, D40: 0.025” (22GA)
7.5kV = 0.28 (7.11) D50 & Larger: 0.032” (20GA)
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)
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.
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.
INSTALLATION
DIELECTRIC COMPARISON
CERAMIC TYPE C0G (NP0) X7R X5U
Dissipation Factor 0.1% 2.5% 2.5%
Temperature Coefficient ±30ppm/ºC ±15% +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
Insulation Resistance
(25ºC)
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
Operating Temperature
Range (rated voltage) -55ºC to +125ºC -55ºC to +125ºC -55ºC to +85ºC
MARKING
(D30) (All Other Sizes)
301M D50W122M
3kV 3kV
KEC KEC
Date Code Date Code
CAPACITOR OUTLINE DRAWINGFEATURES
No Leads
Add to part number if required
© KEMET Electronics Corporation • PO Box 5928 • Greenville, SC 29606 • www.kemet.com
50
Disc
Style
D
Max.
S
±.030
C0G (NP0) X7R X5U
Min. Max. Min. Max. Min. Max.
D30 .30 .250 7.8pF 9.6pF 250pF 300pF 520pF 700pF
D40 .40 .250 20pF 25pF 630pF 770pF 1300pF 1800pF
D50 .50 .375 36pF 44pF 1100pF 1400pF 2400pF 3200pF
D75 .75 .375 80pF 98pF 2500pF 3100pF 5300pF 7200pF
D90 .90 .500 123pF 150pF 3800pF 4700pF 8200pF 11000pF
D100 1.00 .500 145pF 178pF 4600pF 5600pF 9700pF 13000pF
D120 1.20 .500 193pF 236pF 6000pF 7400pF 12900pF 17300pF
Disc
Style
D
Max.
S
±.030
30kVDC 40kDVC 50kVDC
X7R X7R X7R
Min. Max. Min. Max. Min. Max.
D30 .30 .250 20pF 30pF 18pF 22pF 10pF 20pF
D40 .40 .250 60pF 80pF 50pF 60pF 40pF 50pF
D50 .50 .375 110pF 140pF 80pF 100pF 70pF 80pF
D75 .75 .375 250pF 310pF 190pF 230pF 150pF 180pF
D90 .90 .500 380pF 470pF 290pF 350pF 230pF 280pF
D100 1.00 .500 460pF 560pF 340pF 420pF 270pF 330pF
D120 1.20 .500 600pF 740pF 450pF 550pF 360pF 440pF
D30 .30 .250 4.7pF 5.7pF 150pF 180pF 310pF 420pF
D40 .40 .250 12pF 15pF 380pF 460pF 810pF 1100pF
D50 .50 .375 21pF 26pF 670pF 820pF 1400pF 1900pF
D75 .75 .375 48pF 59pF 1500pF 1800pF 3200pF 4300pF
D90 .90 .500 74pF 90pF 2300pF 2800pF 4900pF 6600pF
D100 1.00 .500 87pF 107pF 2700pF 3300pF 5800pF 7800pF
D120 1.20 .500 116pF 141pF 3600pF 4400pF 7700pF 10400pF
D30 .30 .250 3.1pF 3.8pF 100pF 120pF 210pF 280pF
D40 .40 .250 8.1pF 9.9pF 250pF 310pF 540pF 720pF
D50 .50 .375 14pF 17pF 450pF 550pF 950pF 1300pF
D75 .75 .375 32pF 39pF 1000pF 1200pF 2100pF 2900pF
D90 .90 .500 49pF 60pF 1500pF 1900pF 3300pF 4400pF
D100 1.00 .500 58pF 71pF 1800pF 2200pF 3900pF 5200pF
D120 1.20 .500 77pF 94pF 2400pF 3000pF 5100pF 6900pF
D30 .30 .250 2.4pF 2.9pF 70pF 90pF 160pF 210pF
D40 .40 .250 6.1pF 7.4pF 190pF 230pF 400pF 540pF
D50 .50 .375 10.7pF 13.1pF 330pF 410pF 710pF 960pF
D75 .75 .375 24pF 29pF 750pF 920pF 1600pF 2200pF
D90 .90 .500 37pF 45pF 1200pF 1400pF 2500pF 3300pF
D100 1.00 .500 44pF 53pF 1400pF 1700pF 2900pF 3900pF
D120 1.20 .500 58pF 71pF 1800pF 2200pF 3900pF 5200pF
D30 .30 .250 1.6pF 1.9pF 50pF 60pF 100pF 140pF
D40 .40 .250 4.0pF 4.9pF 130pF 150pF 270pF 360pF
D50 .50 .375 7.1pF 8.7pF 220pF 270pF 480pF 640pF
D75 .75 .375 16pF 20pF 500pF 610pF 1100pF 1400pF
D90 .90 .500 25pF 30pF 770pF 940pF 1600pF 2200pF
D100 1.00 .500 29pF 36pF 910pF 1100pF 1900pF 2600pF
D120 1.20 .500 39pF 47pF 1200pF 1500pF 2600pF 3500pF
D30 .30 .250 1.2pF 1.4pF 37pF 45pF 80pF 110pF
D40 .40 .250 3.0pF 3.7pF 100pF 120pF 200pF 270pF
D50 .50 .375 5.3pF 6.5pF 170pF 200pF 360pF 480pF
D75 .75 .375 12pF 15pF 380pF 460pF 800pF 1100pF
D90 .90 .500 18pF 22pF 580pF 700pF 1200pF 1600pF
D100 1.00 .500 22pF 27pF 680pF 830pF 1500pF 2000pF
D120 1.20 .500 29pF 35pF 910pF 1100pF 1900pF 2600pF
3K VDC
5K VDC
7.5K VDC
10K VDC
15K VDC
20K VDC
30K, 40K & 50K VDC
High Voltage
Disc Ceramic Capacitor
D Series
