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RTT0110R0FTH是**RALEC(旺诠科技)**推出的常规厚膜贴片电阻,属于旺诠RTT系列厚膜电阻产品。型号编码明确了核心参数:
该产品采用0201微型贴片封装(公制尺寸约0.5mm×0.3mm),适配自动化表面贴装(SMT)工艺,是消费电子、工业控制等小型化设备的常用被动元件。
RTT0110R0FTH的核心性能参数匹配常规电子电路的通用需求,具体如下:
标称阻值10Ω,常温(25℃)下精度±1%,即实际阻值范围为9.9Ω~10.1Ω,满足大多数信号调理、分压电路的阻值控制要求。
额定功率50mW(环境温度25℃、自由空气条件下的最大功率)。需注意温度降额:当环境温度超过25℃时,允许功率随温度升高而降低(如100℃时降额至约35mW,125℃时降额至约25mW),避免电阻过热失效。
最大工作电压25V(直流/交流有效值),但需与功率协同约束:根据公式(P=V^2/R),若施加25V电压,功率将达到62.5mW(超过额定功率),因此实际最大允许电流为(I=\sqrt{P/R}≈70.7mA),需优先满足功率限制。
±200ppm/℃,即温度每变化1℃,阻值变化量为(10Ω×200×10^{-6}=±0.002Ω)(或±0.02%),适用于温度变化较小的常规电路场景。
-55℃~+125℃,覆盖工业级、部分汽车电子的温度需求,避免低温下性能衰减或高温下电阻漂移。
RTT0110R0FTH采用成熟厚膜工艺,兼顾可靠性与成本优势:
以氧化铝陶瓷基片为载体,通过丝网印刷钌基厚膜电阻浆料,经高温烧结形成致密电阻层,再通过激光微调实现精度控制——相比薄膜电阻,厚膜工艺成本更低,且抗机械应力能力更强。
0201封装尺寸仅为0.5mm×0.3mm,可显著降低电路布局空间,满足便携设备“轻薄化”需求。
基于其小型化、宽温、常规精度的特点,RTT0110R0FTH广泛适用于以下场景:
智能手机、平板电脑等便携设备的电源滤波、分压电路(小型化封装匹配设备空间限制)。
小型传感器信号调理、PLC输入输出模块的限流/匹配电阻(宽温范围适应工业环境-55℃~125℃的温度波动)。
基站、路由器等设备的射频辅助电路(低功率需求匹配通信设备小信号电路)。
车载信息娱乐系统的低功率信号电路(满足汽车级部分温度场景要求)。
为确保产品可靠性,使用时需注意以下要点:
严格遵循旺诠推荐的降额曲线:环境温度每升高1℃,允许功率降低约0.2mW(25℃~125℃区间),避免功率过载导致电阻开路或阻值漂移。
0201封装尺寸小,需使用高精度贴片机(贴装精度≤±0.05mm),焊接温度需符合回流焊曲线(峰值温度245±5℃,时间≤10s),避免虚焊或焊料桥接。
未开封产品需存储于1535℃、4060%RH环境,开封后建议12个月内使用完毕,防止引脚氧化影响焊接可靠性。
若需更高精度(如±0.1%)或更低温度系数(如±50ppm/℃),可考虑旺诠RT系列薄膜电阻;若需更大功率(如1/8W),可选择0402或0603封装的厚膜电阻。
RTT0110R0FTH作为旺诠成熟的厚膜贴片电阻,以高性价比、小型化、宽温稳定的特点,成为常规电子电路设计的优选元件之一。
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