CONFORMAL COATINGS FOR PRINTED CIRCUIT ASSEMBLIES.

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Abstract:

Phase A Evaluate commercially available con formal coating materials used as protective coatings on printed circuit boards in order to obtain data for the preparation of a three services coordinated military specification which will provide sufficient physical, mechanical and electrical properties to assure satisfactory performance of printed circuit assemblies over long storage periods and under high humidity conditions. Phase B Removal of the coating from the board. Phase C Evaluate allowable minimum spacings between conductors on uncoated and coated boards as described in paragraphs 5.1.5 of MIL-STD-275A. Phase D Effects of coatings on copper, gold and solder-plated con ductors with respect to their effect on Q factor and capacity at 1,50 and 100 mc using various spacings and configuration consideration should be given to the spacings shown in paragraph 5.1.5 of MIL-STD-275. Specimens shall consist of single and double sided 116 copper clad glass epoxy laminates and uncoated controls. Phase E The information resulting from Phases A, B, C and D shall be used as a basis for redesign of the following ANVRC-12 printed wiring boards to accept a conformal coating with minimum changes in physical and electrical char acteristics of the boards. Author

Author(s):
Beccasio, Anthony J.
Author Organization(s):
MOTOROLA INC CHICAGO ILL
Descriptive Note:
Quarterly rept. no. 7, 1 Feb-30 Ar 63,
Annotation:
Conformal coatings for printed circuit ssemblies. Evaluation of commercially available conformal coatings used as protective coatings on printed circuit boards for pecification data.
Pagination:
0001

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DA36 039SC89136
Project Number(s):
DA-5999-0004
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*PLASTIC COATINGS, COATINGS, COATINGS, PRINTED CIRCUITS, THICKNESS, CAPACITORS, CAPACITANCE, COILS, OSCILLATORS
Keyword(s):
CONFORMAL COATINGS
Report Date:
1963 Apr 30