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TECHNOLOGY
TECHNOLOGY
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CR18 Series Round Ceramic Capacitive Pressure Sensing Element
Product Introduction
      The Specification describes CR18 ceramic capacitive pressure sensing element applicable to automobile and industry. Capacitance is directly proportional to pressure within its range. With an extremely high linearity, the product is compatible to a majority of pressure media favorably, with such characteristics as corrosion resistance, impact vibration resistance, interference resistance, high reliability, small fixed temperature drift, extremely low hysteresis and fatigue, etc. 
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CR21 Series Round Ceramic Capacitive Pressure Sensing Element
Product Introduction
      The Specification describes CR21 ceramic capacitive pressure sensing element applicable to automotive industry and industry. Capacitance is directly proportional to pressure within its range. With an extremely high linearity, the product is compatible to a majority of pressure media favorably, with such characteristics as corrosion resistance, impact vibration resistance, interference resistance, high reliability, small fixed temperature drift, extremely low hysteresis and fatigue, etc. 
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PRODUCT SPECIFICATION
PRODUCT SPECIFICATION
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Recommendations for product riveting pressure
      It is suggested to use servo riveting pressure device or equipment for riveting pressure with a fixed pressure. The max. force of riveting pressure under stroke control mode shall not exceed 20KN, and the direct force of ceramic sensing element shall not exceed 3KN respectively. Ceramic pressure sensing element as well as sensor may be damaged or output drift may occur due to excessive stress inside sensor, if the environment where the sensing element is used is more serious than the working environment specified in the specification or under too much riveting pressure. 
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Conditioning Chip Recommendation and Pin Connection
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Packaging Reference of the Product
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Packaging recommendations
      a.Prefer protective design to avoid the sensing element from bearing too much riveting pressure stress；
      b.Reduce the overlapping area between sensitive area of ceramic capacitor sensing element and metal shell properly, or increase the distance between sensitive area and metal shell, to minimize output fluctuation caused by the change of their relative positions；
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PCB design and suggestions on sealing type selection
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PCB Design and Welding Reference
      a、PCB PIN diameter: ≥1.2mm; pad diameter: ≥2.2mm; PCB thickness: 0.15~0.80mm; pad surface is tinned or gold plated；
      b、It is recommended to useΦ0.8~1.2mm Sn99.3Cu0.7 or Sn96.5Ag3.0Cu0.5 solder wire (containing 2.0% flux and no lead). During welding, soldering iron temperature: ≤370℃, single welding time: ≤3S, single PIN welding times: ≤3。
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ABOUTUS
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TECHNOLOGY
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PHONE｜15920384518    Mr. XIE
ADDRESS｜10th floor, Building 3, Xunmei Technology Plaza, No.3 Kehua Road, Nanshan District, Shenzhen City, Guangdong Province, China
ADDRESS｜building 27, Changping Jewelry Industry Park, No.8 Huanchangbei Road, Changping, Guangdong Province, China
聚德寿科技有限公司 WANGSNESOR@2023
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