| 摘要 |
<p>PURPOSE:To manufacture a resistor by using a low-cost material and by a low- temperature operation by a method wherein a columnar or cylindrical substrate composed of a resin is provided, a resistive film is formed on an external circumference of this substrate by a non-electrolytic plating operation and terminals are installed on both ends of the substrate in its axial direction. CONSTITUTION:A substrate 1 composed of a resin is provided; the resin such as a phenol resin, an ABS resin, a polycarbonate resin, a polyvinyl chloride resin, a polyethylene resin or the like is used. An external cross section of this substrate 1 is shaped to be circular such as columnar, cylindrical or the like. A resistive film 2 is formed on the whole surface of the substrate 1; it is composed mainly of, e.g., Ni-P; it is formed by a non-electrolytic plating operation. Metal caps 3, 3 acting as external terminals are put on both ends of the substrate 1; after the caps have been pressure- bonded to the resistive film on the surface at the ends of the substrate 1, they are connected to the resistive film 2. An insulating film 4 is formed on an external circumference of the resistive film 2 exposed between both metal caps 3, 3. Because a bath plating to form the resistive film 2 can be executed in a low-temperature range of about 30-95 deg.C, it does not produce any adverse effect on the substrate 1 composed of the resin.</p> |
