Selecting the Right PCB Terminal Block: A Practical Guide for Engineers

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Posted by Ningbo Zhongbo Photovoltaic Technology Co., Ltd. On Jun 04 2025

关键选择标准:

  1. 电流和电压等级:匹配规格与电路的最大负载。过热的原因过热;超大浪费空间/成本。

  2. 音高(mm):相邻杆之间的距离(例如3.5mm,5mm,7.62mm,10.16mm)。确保与PCB布局和线条仪的兼容性。

  3. 电线尺寸和类型:块支撑特定的金属仪表范围(例如AWG 24-12)。考虑实心与搁浅的电线兼容性。

  4. 终止类型:

    • 螺丝码头:可靠,健壮,可重复使用,抗振动。更高电流的理想选择。

    • 弹簧笼(推入):更快的安装,无工具(通常),良好的振动阻力。自动化很受欢迎。

    • 屏障条:简单,具有成本效益的基本连接。

  5. 杆数:单个,双重或多层块。计划未来的扩展需求。

  6. 安装:整孔(THT)还是表面安装(SMT)?提供更高的机械强度; SMT节省空间并适合自动组件。

  7. 环境因素:考虑工作温度范围,湿度和潜在的化学暴露。寻找UL/IEC认证以确保安全合规性。

专家提示:因素易于组装和维护。颜色编码选项可以显着减少安装和维修期间的接线错误。

明智地选择电子组件的安全性,可靠性和寿命,这是制造商提供广泛范围的制造商,以找到完美的合适范围。

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