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ERA2AEB5491X是松下(PANASONIC)推出的一款0402封装高精度薄膜贴片电阻,针对对阻值精度、温度稳定性要求较高的小型化电子电路设计,兼具小体积与高可靠性,适用于多类精密应用场景。
该型号属于松下薄膜电阻系列,采用0402封装(英制代码,对应公制1005规格),核心定位为小功率高精度薄膜电阻——既满足便携设备的高密度贴装需求,又通过薄膜工艺实现远超厚膜电阻的精度与稳定性,是精密模拟电路、小型化电子设备的理想选择。
阻值为5.49kΩ(即5490Ω),精度等级为±0.1%,属于行业内较高的精度水平(常规贴片电阻精度多为±1%、±0.5%)。该精度可满足传感器信号调理、精密分压等对阻值匹配要求严格的场景,减少电路误差。
温度系数(TCR)为**±25ppm/℃**,表示温度每变化1℃,阻值变化约±25×10⁻⁶倍。以100℃温度变化为例,阻值漂移约±13.7Ω,远低于常规厚膜电阻(TCR多为±100ppm/℃以上),确保宽温环境下阻值稳定。
支持**-55℃~+155℃**宽温工作,覆盖工业级、部分汽车级应用的温度需求,可适应极端环境下的长期稳定运行。
封装尺寸为1.0mm(长)×0.5mm(宽)×0.4mm(厚),体积小巧,适合智能手机、智能穿戴、蓝牙耳机等便携设备的高密度PCB布局,可显著提升电路集成度。
采用松下成熟的薄膜电阻工艺(通常为镍铬或钌基薄膜),相比厚膜电阻具有三大核心优势:
电阻结构为陶瓷基板+薄膜电阻层+电极+绝缘保护层,陶瓷基板提供良好的热传导与机械强度,保护层可抵御湿度、灰尘等环境因素,提升长期可靠性。
作为松下出品的薄膜电阻,ERA2AEB5491X具备可靠的品质背书:
总结:ERA2AEB5491X以0402小封装、±0.1%高精度、±25ppm/℃低温度系数为核心优势,适配多类精密电子电路,是小型化、高可靠性应用的优选薄膜电阻。
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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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