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RALEC(旺诠)LR2512-22R030F4是一款专为电力电子领域打造的高精度贴片电流采样电阻(分流器),核心作用是通过低阻值分流实现电路中电流的精准检测,为控制系统提供可靠的电流反馈信号。作为旺诠成熟产品线中的一员,该产品平衡了精度、功率、封装尺寸与成本,适用于对电流检测精度要求较高的工业、汽车及消费电子场景,是替代传统插件分流器的理想选择。
该产品的核心参数围绕“精准、稳定、高效”设计,具体表现为:
阻值为30mΩ(型号中“22R030”编码对应30毫欧),精度等级为±1%——低阻值确保在大电流场景下(如10A电流时仅产生30mV电压降),不会对负载电路造成额外功耗或电压干扰;±1%精度则直接降低电流计算误差,使控制系统能更准确地监控电流状态(如过流保护阈值的精准触发),避免误判或漏判。
额定功率达2W,匹配2512封装的散热面积,可在持续负载下保持稳定工作,无需并联多颗电阻即可满足多数中功率场景需求(如200W开关电源的输出电流采样),简化电路布局的同时降低BOM成本。
温度系数为**±25ppm/℃**,属于低漂移等级——在-55℃至125℃的宽工作温度范围内(工业级常见温区),阻值变化率仅0.25%(温度变化100℃时),有效避免因环境温度波动导致的采样误差,适合高温、低温交替的恶劣场景(如汽车发动机舱、户外光伏逆变器)。
该产品采用2512贴片封装(英制尺寸:250mil×120mil,约6.35mm×3.05mm),具备以下安装优势:
旺诠作为专业电子元器件厂商,LR2512-22R030F4在可靠性上具备以下特点:
该产品的性能匹配多类电力电子场景,核心应用包括:
RALEC LR2512-22R030F4电流采样电阻通过低阻高精度、稳定功率承载、宽温适应性与紧凑封装,成为电力电子领域电流检测的可靠选择。其性能优势覆盖工业、汽车、新能源等多场景,能有效提升控制系统的精准度与可靠性,降低电路设计复杂度,是工程师优化电流采样方案的实用器件。
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WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
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The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
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