IEC 60368-4:2000 pdf download
IEC 60368-4:2000 pdf download.Piezoelectric filters of assessed quality -Part 4:
Sectional specification -Capability approval.
2 Preferred values for ratings and guidance on detail specifications
2.1 Preferred values for ratings and characteristics
The values given in detail specifications shall preferably be selected from those stated in 2.3 of IEC 60368.1.
2.2 Information to be prescribed In detail specifications (Applies to both custom-built and standard catalogue items.)
Guidance on the preparation of detail specifications Is given in the blank detail specification.
IEC 60368.4.1.
Each detail specification shall state all the tests and measurements required for inspection, For standard catalogue items this shall, as a minimum, include the relevant tests given in the blank detail specification, with methods and seventies.
The following information shall be given in each detail specification.
2.2.1 Outline drawing and dimensions
The detail specification shall include a dimensional drawing of the piezoelectric filter and)or reference to an appropriate international standard in order to permit easy recognition and to provide information for dimensioning and gauging procedures.
The dimensions shall Include the overall dimensions of the body of the component as well as the size and spacing of the terminations. All dimensions shall be stated in millimetres.
Terminal connections shall be identified for all enclosures.
When a detail specification covers more than one enclosure, 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 piezoelectnic filter.
2.2.2 Marking
The detail specification shall prescribe the content of the marking on the plezoelectnic filter and on the primary package in accordance with 2.4 of IEC 60368.1.
2.2.3 Ordering Information
The detail specification shall prescribe that the following information is required when ordering a piezoelectric filter:
a) quantity;
b) detail specification number, issue number and date, and where applicable:
C) nominal frequency In kilohertz or megahertz:
d) full description of any additional requirements to identify the piezoelectric filter.
2.2.4 AddItional Information (not for Inspection purposes)
The detail specification may include information which is not normally required to be verified by the inspection procedure, such as circuit diagrams, curves, drawings and notes needed for clarification.
3 Capability approval
3.1 ElIgibility for capability approval
Prior to making an application for capability approval a manufacturer shall first obtain manufacturers approval in accordance with clause 2 of IEC OC 001002.3.
The primary stage of manufacture shall be as defined in 3.1 of IEC 60368-1.
3.2 Structural similarity
Structural similarity is not applicable to capability approval. However, it is applicable to released lots as defined in 3.14.1 of this specification.
3.3 Procedures for capability approval
3.3.1 General
Capability approval in piezoelectric filter technology covers
— the complete design, material preparation and manufacturing techniques, including control processes and tests;
— the performance limits claimed for the processes and products, that is. those specified for the capability qualifying components (COCs);
— the range of mechanical structures for which approval is granted.
3.3.2 Application for capability approval
In order to obtain capability approval the manufacturer shall apply the rules of procedure given In clause 4 of IEC OC 001002-3.
In an application for capability approval the manufacturer shall define the boundaries of the capability for which approval is sought in accordance with 3.5 of this specification
3.3.3 Granting of capability approval
Capability approval shall be granted when the manufacturer has
— prepared a capability manual describing the capability for which he wishes to be approved, to the satisfaction of the National Supervising Inspectorate (NSI);
— agreed with the NSI on the range of COCs. as defined in 4.1 of IEC OC 001002-3. to be used for the assessment of the capability:
— successfully demonstrated that he can design and manufacture components which satisfy the requirements of this sectional specification. within the limits of this capability:
– prepared a capability approval test report to the satisfaction of the NSI.
