Section XXIII. ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) MATERIEL

TM 746-10

IC-1, IA-8, and IA-15 with additional protection prior to

(3) Unit pack items method I which do not

placing in a wood or plywood shipping container to

have exposed, critical, machined finished surfaces and

prevent abrasion of the barrier material. Provide the

are not precision equipment and have been partially or

additional protection by use of an overwrap of

completely coated with a preservative. Accomplish

greaseproof, waterproof barrier material or by placing

sealing of openings and cushioning, blocking, and

the bagged item into a box fabricated from weather-

bracing as described for method III in (2) above.

resistant fiberboard.

(4) Unit pack items that have exposed, highly

d. Packing. Place a quantity of the same item in a

machined-finished surfaces and have been partially or

plywood, wood, or fiberboard box.

completely coated with a preservative and metallic and

e. Marking. In addition to any special markings,

nonmetallic items that require protection from moisture

mark as prescribed in paragraph 3-5.

by submethod IC-1 or submethod IC-2. Base the

selection of the submethod on the weight of the items.

5-166.

Unserviceable, Economically Reparable

Pack items weighing up to 10 pounds by submethod IC-

1. Provide items having sharp corners, protrusions, or

Retrograde Materiel

weighing over 2 pounds with an additional wrap of

greaseproof, waterproof barrier material or cellulosic

Clean, dry, preserve, package, pack, and mark the

cushioning material prior to placing the items into the

same as for serviceable retrograde materiel described in

bags.

paragraph 5-165, except include condition code "F" in

the identification markings as discussed in paragraph 3-

(5) Unit pack precision instruments, precision

equipment, and items with critical, machined surfaces,

with or without preservatives, submethod IA-8, IA-14,

5-167. Serviceable Materiel to be Recycled

IA-15, or IA-16. Weight limitations and cushioning

instructions described for submethod IC-1 in (4) above

Clean, dry, preserve, pack, and mark the same as for

are also applicable when submethod IA-8 is used.

serviceable retrograde materiel described in paragraph

Provide submethods

5-165.

Section XXIII. ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) MATERIEL

item can be used for the purpose for which it was

5-168. General

designed.

a. This section provides instructions for the

5-169. ESD Field Service Kit

preservation and packing of all retrograde, serviceable,

economically reparable electronic items that are

a. All field unit packaging and unpackaging of

susceptible to damage or deterioration from ESD,

including all circuit cards and items within FSCs 5905,

ESDS materiel shall be accomplished by using an ESD

5955, 5961, 5962, 5963, and 7042.

field service kit. ESDS items shall not be removed from

the unit container until the device is being installed in

b. Many electronic devices are highly susceptible

the end item or the next higher assembly and a field

to damage and deterioration from ESD even at levels

service kit is available.

which can be neither seen nor felt. ESD affects many

b. The complete ESD field service kit shall consist

components such as transistors, integrated circuits, and

of a wrist strap, portable conductive table mat, and a

metal oxide semiconductors. Device failures are not

grounding device for the mat. Materials and instructions

always immediately catastrophic or observable. The

component is often only slightly weakened, but it is less

are shown in figure 5-8.

able to withstand subsequent ESD exposure and may

c. Unpreserved ESDS items shall be handled only

fail with continued use. Packaging, handling, and

by trained personnel who can effectively employ the

maintenance personnel are the prime carriers of static

protective materials and equipment provided.

electricity and its enormous potential for damaging

sensitive devices. Activities such as walking, working at

5-170. Packaging

a bench, sitting on a chair, or simply combing your hair

can generate thousands of volts of electricity.

a. Select all ESD packaging materials from

Awareness and control of this phenomenon shall be

appendix A of this manual.

maintained throughout the packaging process to

b. Accomplish cleaning by process C-1 and

positively ensure that the

perform drying by procedure D-1 of MIL-P-116.

5-28