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ECA 202-A Document Information:
Title
Recommended Practice for Preparation of Outline Drawings of Electron Tubes and Bases
Electronic Components Association
Publication Date:
Jan 1, 1964
Scope:
PURPOSE
The purpose of this recommended practice is to supply the
essential information required for the preparation of satisfactory
tube and base outline drawings (hereinafter referred to as
"outlines") on electron tubes and related vacuum sealed devices for
JEDEC application where standard outlines do not exist. (See EIA
Standard RS-209-A.) In addition to meeting EIA registration, this
information should also be of equal value to the ultimate user of
the device.
From a mechanical standpoint, tube data may be considered
complete for type registration when they include an outline drawing
giving the essential dimensions of the tube with the base (s) and
electrode connections properly identified. Whenever a tube requires
a base or envelope not already standardized or registered, the base
and envelope information should be submitted with the tube outline.
(The tube manufacturer will not be required to furnish this
information if the envelope is fabricated internally from composite
segments of commercially available glass. The registration data of
a tube so initially constructed shall mention this condition.)
Outlines may not be required for certain receiving and
physically similar types comprising conventional envelope, base,
and cap assemblies. Such tubes may be considered complete for
registration from a mechanical standpoint when the following
physical specifications are in the form used on the JEDEC Electron
Tube Data Sheets.
Base and cap designations.
Envelope designation and diameter.
Overall length.
Seated height.
Pin, cap, and terminal connections.
JEDEC Basing or Terminal Diagram Number.
Specific shield connections not identified by 1.3.6.
Mounting position.
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