NPFC - MIL-C-15305
COILS, FIXED AND VARIABLE, RADIO FREQUENCY, GENERAL SPECIFICATION FOR
| Organization: | NPFC |
| Publication Date: | 17 July 1979 |
| Status: | inactive |
| Page Count: | 35 |
scope:
This specification covers the general requirements for radiofrequency coils, fixed and variable, for use as simple inductive elements in radiofrequency circuits. Procurement of coils of a specific design will require additional data in the form of complementary Service documents, giving detailed electrical and mechanical requirements, tolerances, and applicable additions and exceptions to the general requirements and tests specified herein (see 3.1 and 3.3.1).
The type designation shall be in the following form and as specified (see 3.1 and 6.2.1).
The style is identified by the two-letter symbol "LT" followed by a one or two digit number. The letters identify radiofrequency coils; the number identifies the grade and class in accordance with table I, 1.2.1.1.1, and 1.2.1.1.2. TABLE I. Grade and class.
Number Grade Class
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Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Army Electronics Research and Development Command, ATTN: DRDEL-ED, Adelphi, MD 20783, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
The grades, including their environmental characteristics, are as follows:
Grade 1 - Resistant to the immersion and moisture-resistance tests (see 4.8.17 and 4.8.18).
Grade 2 - Resistant to the moisture-resistance test (see 4.8.18).
Grade 3 - For use in sealed assemblies.
The classes of coils denoting the maximum operating temperatures (temperature rise (see 4.8.11 and 4.8.11.1) plus maximum ambient temperature) are as follows:
Class O - - - - - - - - - 85°C Class A - - - - - - - - - 105°C Class B - - - - - - - - - 125°C Class C - - - - - - - - - 125°C
The family is identified by a single letter indicating its function as follows:
K - - - - - - - - - - - - - Coil, radiofrequency, fixed. V - - - - - - - - - - - - - Coil, radiofrequency, variable.
intended Use:
The coils covered by this specification are suitable for conventional application. Manufacturers using these parts in printed circuits involing dip-soldering should check the assembly after... View More
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