IEC 60368-3:2001 pdf download
IEC 60368-3:2001 pdf download.Piezoelectric filters of assessed quality -Part 3:
Standard outlines and lead connections.
This part of IEC 60368 specifies the outline dimensions and lead connections for piezoelectric filters with leaded enclosures.
2 Guidance for the standardization of outline drawings for frequency control and selection devices
In order to achieve a uniform presentation of all outline drawings for frequency control and selection devices, the following shall be considered.
2.1 An outline drawing shall show all dimensional and geometrical characteristics of an enclosure necessary to ensure mechanical interchangeability with all other enclosures of the same outline, Enlarged detail view may be used, if necessary.
2.2 The outline drawing shall consIst 01 three parts:
2.2.1 A drawing with dimensional symbols (capital letter) as shown in figure 1 below with applicable notes, if necessary.
2.2.2 A tabular listing relating the drawing symbols to the actual dimensions, Where possible this shall be shown on the same page as the drawing
2.2.3 An actual-size sketch (scale 1:1).
2.3 The outline drawing shall be executed in the third angle projection.
2.4 The function and identification of the lead connections (termination) shall be determined by agreement between the supplier and user, They shall not be defined on the outline drawing.
2.5 Descriptive notes may be used at the bottom of. or adjacent to. the drawing with proper reference to the body of the drawing
2.6 All dimensions shall be In millimetres.
2.7 Outline dimensions A, B, C, D and E shall be listed with maximum values only.
2.8 Lead (termination) cross-sectional dimensions shall be listed with minimum and maximum values, If applicable, nominal dimensions may be added.
2.9 The spacing of the leads (terminations) — symbol H — shall be listed with minimum, nominal and maximum dimensions
2.10 Leads (terminations) for soldering application shall be specified with the minimumlength dimensions (symbol L) only.
Lead (termination) for plug-in application shall be specified with minimum and maximumlength dimensions.
2.11lf leads (terminations) are provided with an undercut,dimensions U and W shall belisted with minimum dimensions only.
3Dimensions of piezoelectric filter enclosures
The dimensions in this standard apply to the completed piezoelectric filters.
Only those dimensions which meet the requirements of the guidance for standardization ofoutline drawings are given (see clause 2).
