Manufacturing process of mixed circuits 105-400 and 17-105 microns.

摘要

MANUFACTURING PROCESS OF MIXED 105 400 CIRCUITS AND 17 TO 105 microns. MANUFACTURING OPERATIONS CIRCUIT MIXED MICRAS 400/35, the manufacturing process begins with a preliminary machining SUPPORT Dielectric by conventional drilling operation (19) SCHEDULED IN ACCORDANCE WITH THE FINAL DESIGN circuit board, which FOLLOW deposition GRAFITO (21) INTO HOLES PREVIOUSLY pRODUCED FOR BELOW fOLLOWED an impression (22) INK NEGATIVE CIRCUIT, and then submitted to the metallization (23) by COPPER ELECTROLYTIC AND REAR PROTECTION (29) POSITIVE THROUGH Sn / PB.