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ARG03FTC6190是光颉(Viking)推出的一款0603封装精密贴片薄膜电阻,针对对阻值精度、温度稳定性及小型化需求较高的电路场景设计,核心参数涵盖619Ω±1%阻值精度、100mW额定功率、±25ppm/℃温度系数等,可适配多领域的小型化电路应用。
ARG03FTC6190定位于精密型小型化贴片电阻,主要解决常规厚膜电阻在精度、温度稳定性上的不足,同时兼顾0603封装的高密度PCB适配性。其设计目标明确:在小体积下实现±1%的阻值精度与低温度漂移,满足消费电子、工业控制等领域对电路参数一致性、长期稳定性的要求。
ARG03FTC6190的核心参数直接决定了其应用边界,以下为关键参数的实际意义解析:
阻值为619Ω(非标准常用阻值,属于定制化精密阻值),精度±1%——这意味着实际阻值波动范围在612.81Ω~625.19Ω之间,远优于常规±5%精度的电阻,可满足分压、限流、信号调理等需要准确参数的电路设计。
额定功率100mW(0.1W),额定工作电压75V。需注意:实际使用时需同时满足功率与电压限制——例如,若工作电压接近75V,需确认负载功率不超过100mW(可通过P=U²/R计算:75V下619Ω的理论功率约9.1W,远高于额定功率,因此实际电压需限制在约7.8V以内,避免过载烧毁)。
温度系数±25ppm/℃,属于低温度漂移范畴——温度每变化1℃,阻值变化仅0.0025%。以工作温区-55℃~+155℃为例,最大温度变化190℃,阻值漂移约0.475%,仍在±1%精度范围内,保证了高低温环境下的参数稳定性。
采用0603封装(英制代码,对应公制1608,尺寸1.6mm×0.8mm),体积仅为常规1206封装的1/4左右,适合高密度PCB布局(如智能穿戴、小型传感器模块等)。
ARG03FTC6190采用薄膜电阻工艺(区别于厚膜电阻的印刷烧结工艺),具有以下可靠性优势:
ARG03FTC6190的参数特性决定了其适合以下场景:
为保证产品可靠性,需注意以下几点:
ARG03FTC6190作为光颉的精密薄膜电阻,在小体积下实现了高精度与宽温稳定性的平衡,是小型化精密电路设计的理想选择。
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