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Printed Circuit Boards
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Figure 4-37.  Crossing Conductive Lines
TM 9-254 4-17. Printed Circuit Boards-Continued Figure 4-36.  Printed Circuit Board Holder b. Printed Circuit Board Care and Storage.  Printed circuit boards should be kept in plastic bags and stored in cardboard boxes.  After being wired, inspected, and stamped, the boards should receive an insulative protective coating on both sides. c. Insulation.  On printed circuit boards with conductive patterns on each side, observe the following rules: (1) Both connections must be soldered when a component pigtail enters a pad on one side of a board and terminates at a pad or other connection point on the other side. (2) Components such as metal case capacitors will be insulated with approved clear tubing when mounted over conductor lines such as shown in figure 4-37. d. Bending  Component  Leads.    When  bending  component  leads,  for  positioning  on  printed  circuit  boards, observe the following rules: (1) Bend component pigtails with a suitable wire bending tool such as wire-bending pliers or tweezers.  Long nose pliers may be used if sharp edges are covered with tubing or plastic tape.  Flattened, nicked, or damaged pigtails will be rejected. 4-41

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