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ERJ-2BWFR100X
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- PANASONIC ERJ-2BWFR100X
- Type
- PANASONIC
- Unit
- Electronic Component
- Minimum package
- 10000 圆盘
Technical parameters
- Power
- 250mW
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- PANASONIC
- Electronic Component
- ERJ-2BWFR100X
- Electronic Component
- 1
- Package
- 0402
- Electronic Component
- SMD Resistor
- Electronic Component
- ±1%
- Electronic Component
- 0.011g
- Electronic Component
- 100mΩ
- Electronic Component
- 1
- Electronic Component
- BM0230127324
- Operating Temperature
- 55℃~+155℃
- Electronic Component
- ±300ppm/℃
- Resistor Type
- Resistor
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ERJ-2BWFR100X 产品概述
一、产品简介
ERJ-2BWFR100X 为厚膜贴片电阻（品牌：PANASONIC 松下），封装 0402，标称阻值 0.1 Ω（100 mΩ），精度 ±1%，适用于需低阻值电流检测与限流的紧凑电子系统。描述常见标注为 “RES 0.1 OHM 1% 1/4W”。
二、主要参数
- 阻值：0.1 Ω（100 mΩ）
- 精度：±1%
- 额定功率：250 mW（标称）
- 温度系数（TCR）：±300 ppm/℃（约 ±0.03%/℃）
- 工作温度范围：-55℃ 至 +155℃
- 封装：0402（约 1.0 × 0.5 mm）
三、性能特性
厚膜工艺成本低、体积小、适合批量生产。100 mΩ 阻值配合 1% 精度，可满足一般电流感测与功率管理应用。TCR ±300 ppm/℃ 表示随温度变化会有可观偏移，长温度范围或高精度场合需考虑补偿或温度校准。
四、典型应用场景
- 电源管理与电流检测（DC-DC、LDO、负载监测）
- 电池管理系统（BMS）初级电流采样（非高精度主感测）
- 过流保护与限流线路
- 小型电机驱动及便携设备电流监控
五、设计与布局建议
- 由于 0402 封装热阻较大，器件散热依赖于 PCB 铜箔面积与焊盘设计，建议在高功率或长时间工作场景下对焊盘增加铜箔面积以提升散热。
- 实测功率与热环境密切相关，建议对标称 250 mW 进行降额（常见降额 50%~80% 取决于散热条件），并以厂商完整数据表为准。
- 电流检测建议采用四端（Kelvin）测量法以消除引线与焊盘接触电阻引入的误差，若需要更高精度或更低 TCR，可考虑金属合金分流电阻（shunt）或四端电阻器件。
六、测量与可靠性注意
- 在测量 100 mΩ 量级电阻时，应使用四线法并注意接触、导线及接地回路引入的寄生电阻。
- 长时间大电流或脉冲功率可能导致阻值漂移或热失配，设计时应评估热循环可靠性与长期漂移。
- 焊接建议遵循厂方回流曲线，避免过高温度或过长时间的局部加热引起性能退化。
七、结论与选型建议
ERJ-2BWFR100X 为体积极小且成本友好的低阻值厚膜电阻，适用于空间受限且对精度要求中等的电流检测场合。在高精度或高稳定性需求下，应考虑温度补偿、四端测量或改用专用分流器件；在高功率或连续大电流工况下，应重点评估散热条件并参考厂商数据表完成最终选型与电路验证。
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