Manufacture of multilayer magnetic circuit board with built-in metal and resistor
A manufacturing method and circuit board technology, which are applied in the directions of non-adjustable metal resistors, circuits, resistors, etc., can solve the problems of complex multi-layer process, high cost, low production efficiency, etc., and achieve simple process flow, long service life, The effect of low production cost
Inactive Publication Date: 2004-04-07
东莞长安涌头红板线路板厂
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Problems solved by technology
[0002] The currently used ceramic thick film resistor board is silk screened and sintered on the ceramic to make the wire, and then the resistor is printed on the silk screen conductive paste. The resistance value of the thick film resistor made by this method is affected by the ambient temperature. Large, poor contact between the resistance and the surface of the wire can easily lead to changes in the resistance value, especially the multi-layer process is complicated, the materials and equipment are expensive, the production efficiency is low, and the cost is expensive
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[0011] The present invention comprises the following steps:
[0012] a. Use the Rogers4400 series magnetic bonding sheet filled with ceramics to crimp the electrolytic copper foil plated with nickel-phosphorus alloy on the rough surface to the Rogers4000 series magnetic plate;
[0013] b. Etch a conductive line on the surface of the above-mentioned electrolytic copper foil, and then etch away a certain length of copper at a specific position on the conductive line according to the required resistance value, leaving the underlying nickel-phosphorus alloy layer as a resistor , and the resistive material in the isolation region is also etched away;
[0014] c. Then use the Rogers4400 series magnetic bonding sheet to press the etched resistor board into a multi-layer board.
[0015] See attached figure 1 , 2 During production, first use the Rogers4400 series magnetic bonding sheet 1 filled with ceramics to crimp the electrolytic copper foil 3 plated with nickel-phosphorus alloy...
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The present invention relates to electronic product technology, and is the manufacture of multilayer magnetic circuit board with built-in metal and resistor. The manufacture includes following steps: pressing electrolytic copper foil with rough surface and plated Ni-P alloy onto Rogers 4000 magnetic board, etching the copper foil to form conducting circuits, further etching the conducting circuit to form Ni-P alloy resistors where they are needed, and final pressing Rogers 4400 magnetic adhering sheets and the etched Rogers 4000 magnetic board to make the multilayer magnetic circuit board. The circuit board of the present invention is suitalbe for use in high temperature and high frequency and its built-in resistor in stable in performance, long in service life and flexible in design and may be manufactured in several layers.
Description
Technical field: [0001] The invention relates to the technical field of electronic products, in particular to a method for manufacturing a multilayer embedded metal resistance magnetic circuit board. Background technique: [0002] The currently used ceramic thick film resistor board is silk screened and sintered on the ceramic to make the wire, and then the resistor is printed on the silk screen conductive paste. The resistance value of the thick film resistor made by this method is affected by the ambient temperature. Large, poor contact between the resistance and the surface of the wire can easily lead to changes in the resistance value, especially the multi-layer process is complicated, the materials and equipment are expensive, the production efficiency is low, and the cost is expensive. Invention content: [0003] The object of the present invention is to provide a method for manufacturing a multi-layer embedded metal resistor magnetic circuit board with stable embedd...
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IPC IPC(8): H01C7/00H05K3/40
Inventor 谢凡荣
Owner 东莞长安涌头红板线路板厂