CT81 HV Disc Ceramic Capacitor 2KV~50KV, 10pf~50000pf 
CT81 High Voltage Disc Ceramic Capacitor, High Voltage Disk Ceramic Capacitor, HV disc ceramic capacitor, 20KV radial disc ceramic capacitor, 30kv axial ceramic capacitor, 50kv axial disc ceramic capacitor
Manufacture Supply CT81 High Voltage Ceramic Capacitors
Application,
CO2 lasers
High voltage pulse generator
X-ray power supply
X-ray high voltage generator
NDT (Non-destructive testing)
Airport security equipment
High frequency & high voltage power supplies
Medical power supply
Military
Rated Voltage: 1000V, 2000V, 3000V, 4000V, 5KV, 6kv, 6.3KV, 8KV, 10KV, 12kv, 15KV, 20KV, 25KV, 27kv, 30KV, 35KV, 40KV, 50KV
Capacitance: 100pf (101), 120pf (121), 200pf (201), 220pf (221), 270pf (271), 330pf (331), 390pf (391), 470pf (471), 500pf (501), 510pf (511), 560pf (561), 680pf (681), 750pf (751), 1000pf (102), 1200pf (122), 1500pf (152), 2000pf (202), 2200pf (222), 2700pf (272), 3000pf (302), 3300pf (332), 3500pf (352), 4000pf (402), 4500pf (452), 4700pf (472), 5600pf (562), 6000pf (602), 6800pf (682), 10nf (103), 20nf (203), 22nf (223), 47nf (473)
Characteristics: 
Operating Temperature Range: -25C to +85C
Rated Voltage (V): 1 KV -50KVDC
Capacitance Range: 100pF -50,000pF
Temperature characteristic: N4700(DL), UJ, SL, YL, BN,Y5P, Y5R, X7E(X7E), X7F(X), X7R(X7R), Y5S(S), Y5T(D), Y5U(E), Y5V(F)
Test Voltage: 2 times of the rated voltage.
Dissipation Factor (tan): at 1 KHz, 1+-0.2 Vrms, 25C
Y5P, Z5U: tan<=2.5%
Z5V: tan <=5%
Insulation Resistance: 10,000 M or 200 M whichever is the smaller 
General Specifications:
6kv: 100pf, 470pf, 1000pf, 2200pf, 3300pf, 4700pf, 10000pf
8kv: 18pf, 100pf, 500pf, 680pf, 1000pf, 10000pf
250vac 8kvdc: 220pf, 470pf, 1000pf, 2200pf, 4700pf
10kv: 10pf, 22pf, 33pf, 50pf, 100pf, 135pf, 220pf. 330pf, 500pf, 680pf, 1000pf, 2200pf, 3300pf, 4700pf, 5000pf, 10000pf
15kv: 30pf, 50pf, 100pf, 150pf, 220pf, 330pf, 470pf, 500pf, 680pf, 1000pf, 1500pf, 2200pf, 3000pf, 3300pf, 4700pf, 10000pf
20kv: 20pf, 100pf, 110pf, 150pf, 220pf, 330pf, 470pf, 500pf, 680pf, 1000pf, 1500pf, 2200pf, 3000pf, 5000pf, 6000pf, 10000pf
25kv: 500pf, 1000pf, 10000pf
30kv: 100pf, 150pf, 220pf, 330pf, 470pf, 500pf, 680pf, 1000pf, 1500pf, 3300pf, 4700pf, 5000pf, 10000pf 
35kv: 500pf, 1000pf, 1500pf, 2700pf, 3000pf, 4500pf, 6000pf
40kv: 30pf, 100pf, 470pf, 4700pf, 6000pf
50kv: 30pf, 470pf, 500pf, 560pf, 750pf, 1000pf, 10000pf
Alternative replacement and direct cross of AVX, TDK, HVCA, CKE, Vishay, Morgan Ceramics and etc...