MIL-DTL-39028F
3.2.1.4 Unit packs.
3.2.1.4.1 Hermetically sealed capacitors (non-ER only). Hermetically sealed (see 6.4) capacitors shall be
individually unit packed in accordance with MIL-STD-2073-1, method 10, or as specified in the contract or purchase
order (see 6.2). The quantity per unit pack (QUP) shall be one. When the weight of a capacitor exceeds ten pounds
(4.536 kilograms), the unit container shall conform to ASTM D5118 class weather resistant, style optional, special
requirements. The requirements for box closure, waterproofing, and reinforcing shall be as specified in 3.3.2.
3.2.1.4.2 Nonhermetically sealed capacitors and all ER capacitors. These capacitors shall be individually unit
packed in accordance with the procedures specified in table I. Except for capacitor chips, the QUP shall be one.
Unless otherwise specified in the contract (see 6.2), the QUP for capacitor chips shall be ten.
3.2.1.4.3 Accessories (when separately acquired). Accessories, such as mounting brackets, shall be unit packed
five each in accordance with MIL-STD-2073-1, method 10. Unit pack quantities for other than five each shall be as
specified (see 6.2).
TABLE I. Military preservation requirements for nonhermetically sealed and all established reliability capacitors.
Type of capacitor
Net weight and cube
Additional requirements
method
Fixed (including chip)
0-10 pounds
1/ 41
See 3.2.1.4.4.
except ceramic case
Exterior container shall be in
(potted) mica dielectric
accordance with requirements of 3.3.2.
Over 10 pounds
42
Fixed, ceramic case
0-10 pounds
51
See 3.2.1.4.4.
(potted) mica dielectric
Exterior container shall be in
Over 10 pounds
52 or 53
accordance with requirements of 3.3.2.
Variable, without roller or
0-10 pounds and
41
See 3.2.1.4.4.
0-125 cubic inches
ball bearings
0-10 pounds but
See 3.2.1.4.4.
over 125 cubic inches 51
Exterior container shall be in
Over 10 pounds
52 or 53
accordance with requirements of 3.3.2.
Variable, with roller or ball
0-10 pounds
51
See 3.2.1.4.4.
bearings
Exterior container shall be in
accordance with requirements of 3.3.2.
Over 10 pounds
52 or 53
1/ Prior to preservation, capacitor chips shall be initially enclosed in transparent, partitioned plastic boxes (or
covered trays).
3.2.1.4.4 Supplementary containers. Capacitors and accessories unit packed as specified in 3.2.1.4.2 with a unit
pack volume exceeding 15 cubic inches (245.85 cubic centimeters), shall be placed in a supplementary container
3.2.1.5 Intermediate packs. When the unit pack is a bag of any type or the unit pack is less than 64 cubic inches
(1,049 cubic centimeters), uniform quantities of capacitors or accessories of the same NSN shall be placed in
intermediate containers conforming to PPP-B-566, PPP-B-676, or ASTM D5118. Intermediate containers shall
contain multiples of five unit packs not to exceed 100 unit packs. No intermediate packs are required when the total
quantity shipped to a single destination will result in only one intermediate pack per shipping container.
3.2.2 Commercial packaging. Commercial packaging preservation shall conform to ASTM D3951.
3.3 Packing. Packing shall be military level A, military level B, or minimal packing (see 3.1 and 6.2).
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