High-precision resistor capable of reducing resistance change rate

High-precision resistor capable of reducing resistance change rate

  • CN 108,520,811 B
  • Filed: 03/14/2018
  • Issued: 10/30/2020
  • Est. Priority Date: 03/14/2018
  • Status: Active Grant
First Claim
Patent Images

1. A high-precision resistor capable of reducing the resistance change rate comprises a ceramic substrate (1), a surface electrode (2), a back electrode (3), a resistor body (4), a primary protective layer (5), a secondary protective layer (6), a mark (7), an end electrode (8), a middle electrode (9) and an external electrode (10), wherein the resistor body (4) is arranged in the middle of the upper surface of the ceramic substrate (1), the primary protective layer (5) and the secondary protective layer (6) are sequentially stacked on the upper side of the resistor body (4) from bottom to top, the primary protective layer (5) covers the resistor body (4), and the secondary protective layer (6) covers the primary protective layer (5);

  • the surface electrodes (2) are arranged on the upper surface of the ceramic substrate (1) and are positioned at two sides of the resistor body (4);

    back electrodes (3) are arranged at two ends of the lower surface of the ceramic substrate (1);

    the end electrodes (8) cover two ends of the ceramic substrate (1), the end electrodes (8) extend to the secondary protective layer (6) from two ends along the upper side of the surface electrode (2), and the end electrodes (8) extend downwards from two ends to cover the back electrode (3);

    the intermediate electrode (9) covers the terminal electrode (8);

    the external electrode (10) covers the intermediate electrode (9), and the resistor body (4) is characterized by comprising a resistor body (41) and metal sheets, wherein the resistor body (41) comprises a plurality of sub-bodies which are cuboid and are flatly arranged on the surface of the ceramic substrate (1) in sequence, the length direction of each sub-body is perpendicular to the length direction of the ceramic substrate (1), the metal sheets are arranged between two adjacent sub-bodies, and the metal sheets are tightly attached to the adjacent sub-bodies;

    wherein the metal sheets comprise a heat-expandable metal sheet (42) and a heat-shrinkable metal sheet (43).

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×