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No. A. and No. B - Any materials available (It should be heavy and weighty) No. A. must be more than 23 mm. in width to support No. B. No. B. height must equal to height of No. C. deducting P.C.B.'s thickness, exactly. No. C. Size is 20 mm. x 20 mm. ( square shape of Paper Phenol Board ) No. D. The glass epoxy board (Without copper) - Size is 1.5 mm. (Thickness) and width have to bigger than 22 mm. |
