This record is used to define an optional standard capacitor decade. If present before the .CKT record (see below), the .STDC record will force the use of capacitor values taken from a standard decade. Standard decades are defined by capacitor manufacturers and indicate what values are available for a particular capacitor series. For example, the ten percent standard capacitor decade has 12 values between 1.0 and 10.0. The ten percent standard capacitor decade could be defined to CCICAP with the following record:
.STDC 1.0 1.2 1.5 1.8 2.2 2.7 3.3 3.9 4.7 5.6 6.8 8.2
The values must be 
1.0 and < 10.0 and must be in increasing
order as in the example above. If needed, multiple line records (see
the example .STDR record above) can be used.
If a .STDC record is processed before the .CKT record, any capacitor values specified in the circuit will be changed to the closest standard decade value. For example, a capacitor specified as:
C c56 nd3 nd4 1.6582e-6
will be changed to a capacitor with value 1.8e-6 farads. The new value, selected from the standard decade, will be shown on the circuit listing in the ASCII output file.
Standard capacitor decades are easily added and removed from an analysis by the use of the .INC feature. For example, the following record would add a standard decade to an analysis:
.INC stdc.10
assuming that the file stdc.10 existed and consisted of the .STDC record shown above. To remove the standard decade, the .INC record could be commented out:
*.INC stdc.10
Elements whose values are changed via an .ALTEL record are not forced to be from a specified standard decade. This allows for nonstandard capacitor values for selected capacitors during a subsequent analysis of the circuit.