Part Number Ordering Information, example and explanation:

CDR01BX100AKSR where,

CDR
01
B
X
100
A
K
S
R
Style (multiple layer, fixed, unencapsulated, ceramic dielectric, established reliability, chip capacitors conforming to MIL-PRF-55681)
Shape and Dimensions of the capacitor
Rated Temp. Range of -55°C to +125°C
Voltage-Temp. Limits
Capacitance Value
Rated Voltage
Capacitance Tolerance
Termination Finish
Failure Rate Level

Part number ordering options are developed using the following criteria:

Style
Detail Specification
Volt./Temp. Limits
Rated Voltage
CDR01
MIL-PRF-55681/1
BG = 90 +/- 20 ppm/°C
A = 50 Vdc
CDR03
MIL-PRF-55681/1
BP = 0 +/- 30 ppm/°C
B = 100 Vdc
CDR04
MIL-PRF-55681/1
BX = +/- 15%
C = 200 Vdc
CDR05
MIL-PRF-55681/2
D= 300 Vdc
CDR06
MIL-PRF-55681/3
E = 500 Vdc
CDR11
MIL-PRF-55681/4
CDR12
MIL-PRF-55681/4
CDR13
MIL-PRF-55681/4
CDR14
MIL-PRF-55681/4
CDR31
MIL-PRF-55681/7
CDR32
MIL-PRF-55681/8
CDR33
MIL-PRF-55681/9
CDR34
MIL-PRF-55681/10
CDR35
MIL-PRF-55681/11
Capacitance 
Tolerance
Termination
Finish
Failure Rate Levels
B = +/- 0.10 pF
S = Solder-coated, final M = 1.0%/1000 hrs (Level 3)
C = +/- 0.25 pF
M = Palladium-Silver P = 0.1%/1000 hrs (Level 2)
D = +/- 0.50 pF
N = Silver-Nickel-Gold R = 0.01%/1000 hrs (Level 2)
F = +/- 1 %     
U = Base Metallization-Barrier, Metal-Solder Coated S = 0.001%/1000 hrs (Level 1)
G = +/- 2 %     
W = Base Metallization-Barrier, Metal-Tinned (Tin or Tin/Lead Alloy)
(PROHIBITED FOR SPACE FLIGHT USE. SEE APPLICATION NOTE)
J = +/- 5 %     
Y = Base Metallization Barrier 100% Tin (PROHIBITED FOR SPACE FLIGHT USE. SEE APPLICATION NOTE)
K = +/- 10 %   
M = +/- 20 %   
Capacitor Values:
Capacitance values in picofarads (pF) are contained in the following listing. When ordering, the first two digits represent significant figures and the last digit specifies the number of zeroes to follow. For example 101 indicates 100 pF and 102 indicates 1000 pF. The letter "R" shall be used to indicate a decimal point when required. For example 1R0 indicates 1.0 pF; R75 indicates 0.75 pF.