AIA/NAS 4119-2011pdf download HEAT SINK, ELECTRONIC COMPONENT, SEMICONDUCTOR DEVICES, PRESS-ON TYPE
MATERIAL:
ALUMINUM SHEET OR PLATE: 1100 (UNS A91100), 3003 (UNS A93003) OR 5052 (UNS A95052) IN ACCORDANCE WITH AMS-QQ-A-250.
BERYLLIUM COPPER ALLOY: NUMBER C175 (UNS C17500) IN ACCORDANCE WITH ASTM B534, OR NUMBER C172 (UNS C17200) IN ACCORDANCE WITH ASTM B194.
FINISH:
FOR ALUMINUM ALLOY:
BLACK ANODIZE COATING CONFORMING TO TYPE I OR TYPE II OF MIL-A-8625.
HARD ANODIZE COATING CONFORMING TO TYPE III OF MIL-A-8625, MINIMUM THICKNESS .001, SODIUM DICHROMATE SEALED. THROUGH-HOLES, EDGES, AND THREADS MAY BE FREE OF ANODIZE, BUT IN SUCH CASES THESE SURFACES SHALL RECEIVE A CHEMICAL CONVERSION COATING IN ACCORDANCE WITH MIL-DTL-5541, CLASS 3.
FOR BERYLLIUM COPPER:
BLACK CHEMICAL/BLACK EBANOL IN ACCORDANCE WITH MIL-F-495.
INSULATING COATING (ELECTRICAL INSULATION UP TO 500 V DC).
BLACK CADMIUM PLATING IN ACCORDANCE WITH AMS-QQ-P-416 TYPE II OR TYPE III, CLASS 2 OR CLASS 3 OR ASTM B766, TYPE II OR TYPE III, CLASS 5 OR CLASS 8, AT MANUFACTURER’S OPTION.
CODE:
MATERIAL CODE:
“A” INDICATES ALUMINUM SHEET OR PLATE
“E” INDICATES BERYLLIUM COPPER ALLOY
FINISH CODE:
“B” INDICATES BLACK ANODIZE COATING (ALUMINUM ALLOY ONLY)
“L” INDICATES HARD ANODIZE COATING (ALUMINUM ALLOY ONLY)
“C” INDICATES BLACK CHEMICAL/BLACK EBANOL (BERYLLIUM COPPER ONLY)
“D” INDICATES INSULATING COATING (BERYLLIUM COPPER ONLY)
“H” INDICATES BLACK CADMIUM PLATING (BERYLLIUM COPPER ONLY)
NOTES:
(1) DIMENSIONS IN INCHES AND APPLY AFTER FINISH UNLESS OTHERWISE SPECIFIED.
(2) TOLERANCES UNLESS OTHERWISE SPECIFIED: DECIMALS ± .005.
(3) A RADIUS OF .010 INCHES IS PERMISSIBLE ON CORNERS AND EDGES.
(4) JEDEC CASE SIZE: SEE FIGURE 1. THE ABBREVIATION JEDEC REFERS TO THE JOINT ELECTRON DEVICE ENGINEERING COUNCIL, WHICH IS THE SEMICONDUCTOR ENGINEERING FUNCTION OF THE ELECTRONIC INDUSTRIES ASSOCIATION.
(5) THERMAL RESISTANCE VALUES:

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