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ERJ2GEJ221X
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- PANASONIC ERJ2GEJ221X
- Type
- PANASONIC
- Minimum package
- 10000 圆盘
Technical parameters
- Power
- 100mW
- Electronic Component
- Electronic Component
- Electronic Component
- PANASONIC
- Electronic Component
- ERJ2GEJ221X
- Electronic Component
- 1
- Package
- 0402
- Electronic Component
- SMD Resistor
- Electronic Component
- ±5%
- Electronic Component
- 0.011g
- Electronic Component
- 220Ω
- Electronic Component
- 1
- Electronic Component
- BM0257247257
- Operating Temperature
- 55℃~+155℃
- Electronic Component
- ±200ppm/℃
- Resistor Type
- Resistor
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ERJ2GEJ221X 产品概述
一、概述
ERJ2GEJ221X 是 PANASONIC（松下）系列的贴片厚膜电阻，阻值为 220Ω，精度 ±5%，额定功率 100mW，温度系数 ±200ppm/℃，工作温度范围 -55℃ 至 +155℃，封装为 0402。该型号定位为小尺寸、低功耗且成本效益高的通用贴片电阻，适用于高密度 PCB 设计和各种低功耗电子设备中作为牵引、分压、限流等基本功能元件。
二、主要性能与特点
- 电阻类型：厚膜电阻，工艺成熟，成本较低，兼顾稳定性与可量产性。
- 阻值与精度：220Ω ±5%，适合不要求高精度的通用电路。
- 功率与热特性：额定功率 100mW（在额定环境条件下），温度系数 ±200ppm/℃，对温度变化有可预测的阻值漂移。
- 工作环境：可在 -55℃ 至 +155℃ 的宽温区间内可靠工作，适应工业级温度需求。
- 封装优势：0402 小尺寸封装，有利于高密度布局、减小体积并优化信号路径长度。
三、典型应用场景
- 移动终端与便携设备：用于信号分压、偏置或限流场合，节省 PCB 空间。
- 通信与网络设备：在滤波、阻抗匹配和保护电路中作为通用阻值元件。
- 传感与测量模块：用于匹配传感器电路的阻值网络或参考分压。
- 工业控制与家电产品：在对成本敏感且需耐温耐用的应用中广泛使用。
四、PCB 布局与焊接注意事项
- 布局：0402 封装体积小，应保证贴装机器与回流工艺的可靠性；布线时注意热回流与焊盘尺寸匹配。
- 热管理：额定 100mW 功率在实际应用中会随环境温度上升而降额，设计时应考虑功率裕量。建议参考厂商的功率-温度降额曲线进行热设计。
- 焊接工艺：兼容标准表面贴装回流焊流程；为保证可靠性，注意回流峰值温度和停留时间不要超过焊接工艺推荐值，并避免重复高温循环。
- 机械可靠性：贴装与拆焊时避免对元件施加过大剪切或弯折力，以免引起内部裂纹或终端脱落。
五、可靠性与选型建议
- 在对阻值稳定性与温漂有更高要求的场合，应考虑精度更高或低温漂的薄膜电阻或金属膜电阻。
- 若实际环境温度或功耗接近极限，应选择更高功率等级或适当提高阻值以降低电阻上的功耗。
- 对于需长期稳定性的关键电路，建议进行样机测试并观察在目标工况下的阻值漂移与寿命表现。
六、结论
ERJ2GEJ221X（PANASONIC，0402，220Ω，±5%，100mW，±200ppm/℃，-55℃~+155℃）是一款面向高密度、低功耗应用的通用厚膜贴片电阻，兼具体积小、成本低和宽温适应性的特点。用于非高精度但要求稳定性和可靠性的电子系统中，能够在合理的设计裕量下提供可靠性能。选型时请结合实际功率分布与温度条件，并参考厂商提供的热降额与可靠性资料以保证长期稳定工作。
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