Entering MIL-HDBK-217 Capacitors
The following table describes the part parameters required for capacitors when a MIL-HDBK-217 model is selected for the calculation. MIL-HDBK-217 models support all but the Other, Variable subcategory of capacitors. When exceptions are noted, part prefixes, which appear in parentheses after the subcategories, are used.
Parameter
Type
Description
Quality Level
Choice List
The quality screening level used in the manufacturing of the device. Choices vary by subcategory. For more information, see MIL-HBDK-217 Quality Levels.
[Voltage Parameters]
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For more information, see Voltage Parameters.
Capacitance
Real
Not required for the following part types: (CT), (CV), (CA, CP), and (CG).
The capacitance value of the device. This parameter is used in conjunction with Units.
Units
Choice List
Not required for the following part types: (CT), (CV), (CA,CP), and (CG).
The units for the Capacitance value. Choices are:
F (Farad)
uF (micro Farad = F/1E6)
nF (nano Farad = F/1E9)
pF (pico Farad = F/1E12)
Type
Choice List
Required only for the following part types: (CM, CMR), (CL, CLR, CRL), and (PC).
The type of device. Choices vary by subcategory.
Construction Type
Choice List [FN1 only]
Required only for the following part types: (CM, CMR), and (CL, CLR, CRL).
The construction type of the device. Choices vary by subcategory.
Series Resistance
Choice List (Ohms/Volt)
Required only for the following part types: (CWR) and (CSR).
The circuit resistance of the device. Choices are:
0.8
0.6 to 0.8
0.4 to 0.6
0.2 to 0.4
0.1 to 0.2
0 to 0.1
Configuration
Choice List [FN1 only]
Required only for the following part type: (CG).
The configuration of the device. Choices are:
Fixed
Variable
Max Junction Temp
Choice List (Degrees C) [FN1 only]
Not required for the following part types: (CT), (CDR), (CY, CYR), (CE), (CL, CLR, CRL), (CA, CP), (CSR), (CRH), and (CC, CCR).
The maximum junction temperature, which is normally available in the manufacturer's databook. The device is flagged as overstressed if the sum of the temperature rise and subassembly temperature is greater than the maximum junction temperature.
[Temperature Parameters]
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For more information, see Basic Temperature Parameters.
[Derating Parameters]
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For more information, see Derating Parameters.