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Viking(光颉)作为国内精密电阻领域的核心供应商,推出的AR02BTC7502是一款针对高精准度、宽温稳定性设计的薄膜贴片电阻,采用0402超小封装,兼顾性能与空间效率,适用于各类对阻值精度敏感的精密电子设备。
AR02BTC7502属于工业级高精密薄膜电阻,核心定位为:在0402小型化封装下,实现±0.1%阻值精度与±25ppm/℃温度系数的平衡,同时满足62.5mW低功耗、25V工作电压的设计要求。其填补了小封装与高精度之间的性能 gap,针对校准电路、信号调理等对阻值稳定性要求严苛的场景优化。
阻值固定为75kΩ(标准E96系列阻值),覆盖分压、滤波、反馈网络等常见电路需求;精度达**±0.1%**,远高于普通厚膜电阻(通常±1%~±5%),可有效减少电路系统误差,适合基准电压、精密测量等核心环节。
额定功率为62.5mW,是0402封装电阻的典型功率等级,适配低功耗电子设备(如可穿戴、微型传感器);最大工作电压25V,在额定功率范围内可稳定工作(实际功耗计算:V=25V时,P=V²/R≈8.33mW,远低于额定值),避免过压击穿风险。
温度系数(TCR)为**±25ppm/℃,表示温度每变化1℃,阻值变化仅±25×10⁻⁶,稳定性显著优于碳膜电阻(通常±200ppm/℃以上);工作温度范围覆盖-55℃~+155℃**,满足工业级、车载级(部分场景)的极端温区需求,不会因温度波动导致电路性能漂移。
封装尺寸为1.0mm×0.5mm(长×宽),是贴片电阻的超小封装之一,可大幅降低PCB布局空间,适配高密度设计(如智能手机主板、微型医疗仪器),同时兼容自动贴装设备,提升生产效率。
采用真空溅射+光刻工艺制备电阻膜,相比厚膜电阻的丝网印刷工艺,膜层均匀性更高、阻值一致性更好;电阻膜与陶瓷基底结合牢固,抗老化、抗机械应力性能优异,长期使用阻值漂移极小。
AR02BTC7502的性能特点使其适配多类场景:
光颉对该电阻进行了多轮可靠性测试:高温存储(155℃/1000h)、温度循环(-55℃+155℃/1000次)、振动测试(20Hz2000Hz)等,阻值漂移均控制在±0.05%以内,满足工业级可靠性标准。
综上,Viking光颉AR02BTC7502凭借高精度、宽温稳定、小封装的核心优势,成为精密电子领域的高性价比选择,可有效提升电路性能的一致性与可靠性。
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