| 摘要 |
<p>PURPOSE:To simplify surface mounting by a method wherein a first electrode, a second electrode and a third electrode are formed in U-shape cross section astriding the upper surface, the side face and the lower surface of a square substrate. CONSTITUTION:A metal thin film resistor 2 is formed almost in the center of the upper surface of a square substrate 1, the first electrode 3, which comes in contact with one side end part of the resistor 2, is formed on one side of the square substrate 1 in such a manner that its cross section is formed in U-shape astriding the upper and the lower surfaces. The second electrode 4 and the third electrode 5, having U-shaped cross section and coming in contact with the corner part on the other side of the resistor 2, are formed. A protective coat 6, with which the outside air is shut off, is covered on the resistor 2, and a block-like chip type temperature-variable resistor 7, on which resistance value changes in accordance with a change of ambient temperature, is protrudingly provided externally between the second electrode 4 and the third electrode 5. As a result, the attenuator is small in size, it can be manufactured easily, it is suitable for mass production, and it has high contact reliability.</p> |
