BS EN 60384-26-2010 pdf download.Fixed capacitors for use in electronic equipment
Part 26: Sectional specification — Fixed aluminium electrolytic capacitors with conductive polymer solid electrolyte.
1.4 InformatIon to be given In a detail specification
Detail specifications shall be derived from the relevant blank detail specification.
Detail specifications shall not specify requirements inferior to those of the generic, sectional or blank detail specification. When more severe requirements are included, they shall be listed in 1.9 of the detail specification and indicated in the test schedules, for example by an asterisk.
NOTE The Information given in 1.4.1 may for convenience, be presented in tabular form.
The following information shall be given in each detail specification and the values quoted shall preferably be selected from those given in the appropriate clause of this sectional specification.
1.4.1 Outline drawings and dimensions
There shall be an illustration of the capacitor as an aid to easy recognition and for comparison of the capacitor with others. Dimensions and their associated tolerances, which affect interchangeability and mounting, shall be given in the detail specification. All dimensions shall preferably be stated in millimeters.
Normally the numerical values shall be given for cylindrical types, the body diameter, and the length and diameter, and the spacing of the terminations. When necessary, for example when a number of items (capacitance values/voltage ranges) are covered by a detail specification, the dimensions and their associated tolerances shall be placed in a table below the drawing.
When the configuration is other than described above, the detail specification shall state such dimensional Information as will adequately describe the capacitor. When the capacitor is not designed for use on printed boards, this shall be clearly stated in the detail specification.
1.4.2 Mounting
The detail specification shall specify the method of mounting to be applied for normal use and for the application of the vibration and the bump or shock tests. The capacitors shall be mounted by their normal means. The design of the capacitor may be such that special mounting fixtures are required in its use. In this case, the detail specification shall describe the mounting fixtures and they shall be used in the application of the vibration and bump or shock tests.
1.4.3 Rating and characteristics
The ratings and characteristics shall be in accordance with the relevant clauses of this specification, together with the following:
3.2 Structurally similar components
Capacitors considered as being structurally similar are capacitors produced with similar
processes and materials, though they may be of different case sizes and values.
3.3 Declaration of conformity (basic requirements)
3.4 Test schedule and requirement for initial assessment (mandatory and optional tests)
The procedures for qualification approval testing are given in IEC 60384-1.
The schedule to be used for Qualification Approval testing on the basis of lot-by-lot and periodic tests is given in 3.5 of this specification. The procedure using a fixed sample size schedule is given in 3.4.1 and 3.4.2 below.
3.4.1 Qualification approval on the basis of the fixed sample size procedures sampling
The fixed sample size procedure is described In Q.5.3, b) of IEC 60384-1. The sample shall be representative of the range of capacitors for which approval Is sought. This may or may not be the complete range covered by the detail specification.
The sample shall consist of specimens of capacitors of maximum and minimum size and for each of these sizes the maximum capacitance value for the highest rated voltage and minimum rated voltage of the voltage ranges for which approval is sought. When there are more than four rated voltages, an intermediate voltage shall also be tested. Thus for the approval of a range, testing is required of either four or six values (capacitance/voltage combinations) for each temperature characteristic. Where the total range consists of less than four values, the number of specimens to be tested shall be that required for four values.
In case assessment level EZ is used, spare specimens are permitted as follows:
Two (for 6 values) or three (for 4 values) per value which may be used as replacements for specimens, which are non-conforming because of incidents not attributable to the manufacturer. The numbers given in Group 0 assume that all groups are applicable. If this is not so the numbers may be reduced accordingly.
When additional groups are introduced Into the qualification approval test schedule, the number of specimens required for Group 0 shall be increased by the same number as that required for the additional groups.
Table 2 gives the number of samples to be tested in each group or subgroup together with the number of oermissible non-conformances for aualification aooroval test.BS EN 60384-26-2010 pdf download.