MIL-PRF-123D
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order
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(see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel
need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements
are maintained by the Inventory Control Point's packaging activities within the Military Service or Defense Agency, or
within the military service's system commands. Packaging data retrieval is available from the managing Military
Department's or Defense Agency's automated packaging files, CD-ROM products, or by contacting the responsible
packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. The capacitors covered by this specification are intended for use in space, launch vehicles, or
other high reliability applications. Capacitors covered by this specification are unique due to the fact that these
devices must be able to operate satisfactorily in high reliability military systems under the following demanding
conditions: 50 Gs of high frequency vibration, high humidity, and wide temperature fluctuations. These capacitors
also offer very high reliability that is verified under a qualification system. Commercial components are not designed
to withstand these military environmental conditions.
6.2 Acquisition requirements. Acquisition documents must specify the following:
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a. Title, number, and date of this specification, the applicable specification sheet, and the complete PIN (see
3.1).
b. Lead length, if different from that specified (see 3.1). Lead lengths may be a minimum of 1 inch (25.4 mm)
long for use in tape and reel automatic insertion equipment, when specified.
c. Packaging requirements.
6.3 Qualification. With respect to products requiring qualification, awards will be made only for products that are,
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at the time of award of contract, qualified for inclusion in Qualified Products List 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, ATTN: DSCC-VQP, PO Box 3990, Columbus, OH 43218-3990, or by e-mail to
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6.3.1 Copies of SD-6, "Provisions Governing Qualification", are available online at
https://assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue,
Building 4D, Philadelphia, PA 19111-5094.
6.4 Case insulation. It is not intended that the case insulation be subjected to sustained voltage in excess of 150
percent of the dc rated voltage of the capacitor. Supplementary insulation should be provided where the case may
come in contact with higher voltage.
6.5 Tin whisker growth. The use of alloys with tin content greater than 96 percent, by mass, may exhibit tin
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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 4 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).
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