MIL-PRF-83287G
6.3 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may exhibit tin
whisker growth problems after manufacture. Tin whiskers may occur anytime from a day to years after manufacture
and can develop under typical operating conditions, on products that use such materials. Conformal coatings applied
over top of a whisker-prone surface will not prevent the formation of tin whiskers. Alloys of 3 percent lead, by mass,
have shown to inhibit the growth of tin whiskers. For additional information on this matter, refer to ASTM-B545
(Standard Specification for Electrodeposited Coatings of Tin) (see 3.3.1).
6.4 Environmentally preferable material. Environmentally preferable materials should be used to the maximum
extent possible to meet the requirements of this specification. Table IV lists the Environmental Protection Agency
(EPA) top seventeen hazardous materials targeted for major usage reduction. Use of these materials should be
minimized or eliminated unless needed to meet the requirements specified herein (see section 3).
TABLE IV. EPA top seventeen hazardous materials.
Benzene
Dichloromethane
Tetrachloroethylene
Cadmium and Compounds
Lead and Compounds
Toluene
Carbon Tetrachloride
Mercury and Compounds
1,1,1 - Trichoroethane
Chloroform
Methyl Ethyl Ketone
Trichloroethylene
Chromium and Compounds
Methyl Isobutyl Ketone
Xylenes
Cyanide and Compounds
Nickel and Compounds
6.5 Qualification. With respect to products requiring qualification, awards will be made only for products which are,
at the time of award of contract, qualified for inclusion in Qualified Products List QPL-83287 whether or not such
products have actually been so listed by that date. The attention of the contractors is called to these requirements,
and manufacturers are urged to arrange to have the products that they propose to offer to the Federal Government
tested for qualification in order that they may be eligible to be awarded contracts or orders for the products covered by
this specification. Information pertaining to qualification of products may be obtained from the Defense Supply Center
Columbus, P.O. Box 3990, ATTN: DSCC-VQ, Columbus, Ohio 43218-3990 or emailed to vqp.chief@dla.mil.
6.5.1 Provisions governing qualification (SD-6). Copies of "Provisions Governing Qualification" are available online
at https://assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D,
Philadelphia, PA 19111-5094.
6.6 Window anti-reflection coating. When specified it is recommended that an anti-reflection coating can be
obtained with MIL-C-675 or an equivalent.
6.7 Definitions. For the purpose of this specification, the following definitions apply:
a. Malfunction. Failure to transfer from one state of display to another upon application of specified voltage and
transfer pulse length.
b. False transfer. Transfer from one state of display to another upon application of specified voltage and
shorter than minimum specified pulse length, and/or transfer from one state of display to another which
occurs with no input signal applied to the indicator under test.
6.8 Subject term (key word) listing.
Case
Diodes
Dual coil
Magnetic circuit
Single coil
Springs
Solder terminals
Window
Wire leads
6.9 Changes from previous issues. Asterisks are not used in this revision to identify changes with respect to the
previous issue due to the extensiveness of the changes.
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