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KP-3216CGCK 是 Kingbright 推出的 1206(3.2 × 1.6 mm)封装黄绿色 Chip LED,透镜为无色透明,面向需要宽角、高可视性的指示与照明应用。该器件峰值波长 574 nm(标称 570 nm),发光角度宽达 140°,在标准 20 mA 驱动条件下可提供约 50 mcd 的发光强度。器件耐温范围为 -40℃ 至 +85℃,适用于工业与消费类设备的常规环境。
在 If = 20 mA 时,器件消耗功率约为 Vf×If ≈ 50 mW,低于额定 75 mW 的最大耗散值,表示在推荐电流下有一定余量。为保证长期稳定,建议在设计中考虑降额运行或合理散热;若在高密度布局或高环境温度下使用,可通过增加 PCB 铜箔面积或散热层改善热阻,延长寿命并维持光衰小。
本类 LED 为恒流驱动最佳。举例:若由 5 V 电源驱动、单颗 LED 串联,限流电阻 R = (VCC − Vf) / If = (5 − 2.5) / 0.02 ≈ 125 Ω,可选常见 120–150 Ω、额定功率 ≥1/4 W 的电阻。若使用多颗串联或矩阵驱动,优先采用恒流源或恒流驱动 IC,以获得稳定亮度与一致性。高亮短脉冲可临时超载,但须控制占空比与峰值电流以免热损伤。
KP-3216CGCK 兼容常规 SMT 贴片与回流焊工艺,应遵循 Kingbright 的焊接曲线建议并避免超出高温暴露时间。贴装时注意基板焊盘尺寸、锡膏量与湿润性,避免 tombstoning 与偏位。器件对 ESD 敏感,运输与贴装环节应采取防静电措施。
建议在产品验证阶段进行温升测试、寿命(LM-80/IES)与潮湿环境测试,关注长期光衰、色坐标漂移与正向电压变化。设计时保留一定电流降额、安全裕度与过温保护以提升可靠性。
适用于面板指示、状态灯、消费电子按键指示、仪表背光、小型信号灯与物联网设备等需要宽视角、黄绿色视觉效果的场合。由于体积小、亮度可控,适合大批量 SMT 自动化生产。
总结:KP-3216CGCK 在 1206 体积下提供稳定的黄绿色输出与宽视角,适配常规恒流驱动与 SMT 工艺。设计时注意热管理、限流与 ESD 防护,可在工业与消费领域实现长期可靠的视觉指示解决方案。
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