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ERA3AEB2491V
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- PANASONIC ERA3AEB2491V
- Type
- PANASONIC
- Minimum package
- 5000 圆盘
Technical parameters
- Power
- 100mW
- Electronic Component
- Electronic Component
- Electronic Component
- PANASONIC
- Electronic Component
- ERA3AEB2491V
- Electronic Component
- 1
- Package
- 0603
- Electronic Component
- SMD Resistor
- Electronic Component
- ±0.1%
- Electronic Component
- 0.03g
- Electronic Component
- 2.49kΩ
- Electronic Component
- 1
- Electronic Component
- BM0264567923
- Operating Temperature
- 55℃~+155℃
- Operating Voltage
- 75V
- Electronic Component
- ±25ppm/℃
- Resistor Type
- Resistor
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PANASONIC ERA3AEB2491V 高可靠性薄膜贴片电阻器产品概述
ERA3AEB2491V是松下电子针对高可靠性、高精度场景设计的薄膜贴片电阻器，依托松下成熟的薄膜工艺与可靠性测试体系，在工业控制、医疗设备、通信系统等领域具有核心应用价值。以下从产品定位、参数、设计、应用及注意事项展开详细概述。
一、产品定位与核心优势
该电阻定位于工业级高可靠性薄膜贴片电阻，区别于消费级电阻的“低成本优先”，侧重长期稳定性、环境耐受性与精密信号适配性，核心优势包括：
- 高精度：±0.1%阻值精度，满足精密电路的一致性要求；
- 低温度漂移：±25ppm/℃温度系数，阻值随温度变化极小；
- 宽温适应：-55℃~+155℃工作范围，覆盖极端工业/户外环境；
- 高功率密度：100mW功率封装在小型贴片内，节省PCB空间；
- 高可靠性：抗振动、抗老化性能优异，通过严苛工业级测试。
二、关键参数详解
参数项 具体参数 实际意义说明 电阻类型 薄膜电阻 采用均匀薄膜层，比碳膜/金属膜电阻稳定性更高 阻值 2.49kΩ E96系列标识“2491”（249×10¹），阻值范围2487.51Ω~2492.49Ω 精度 ±0.1% 精密电路（如传感器调理）的核心要求，避免信号偏差 额定功率 100mW 常温下最大允许功耗，需结合温度降额使用 最大耐压 75V 绝缘极限电压，实际工作电压需满足：V≤√(P×R)≈15.8V（避免超功率） 温度系数（TCR） ±25ppm/℃ 每℃阻值变化±25×10⁻⁶，-55~155℃温差下阻值变化≤0.53%，远低于普通电阻 工作温度范围 -55℃~+155℃ 符合工业级宽温标准，适配高温炉、低温户外设备等场景三、设计特点与可靠性保障
1. 薄膜工艺核心
采用松下专利镍铬合金薄膜沉积技术，薄膜层均匀性达纳米级，相比传统电阻：
- 老化1000小时后阻值变化≤0.1%；
- 抗湿度（90%RH/40℃）1000小时后阻值变化≤0.2%。
2. 封装可靠性
对应0805贴片封装（2.0mm×1.25mm），焊盘设计优化：
- 兼容回流焊（峰值≤260℃/10s）、波峰焊（≤250℃/5s）；
- 抗振动（10~2000Hz/2g）、抗冲击（50g）符合IEC 60068标准。
3. 环境适应性
- 防潮封装：避免潮湿导致阻值漂移；
- 抗化学腐蚀：适配工业现场的轻度酸碱环境。
四、典型应用场景
- 工业控制：PLC模拟量模块、传感器（压力/温度）信号调理电路；
- 医疗设备：监护仪血氧/心率监测、呼吸机精密测量电路；
- 通信系统：基站射频偏置电阻、路由器信号衰减电路；
- 测试仪器：示波器垂直放大器、万用表校准电阻；
- 汽车电子：发动机舱传感器接口（需宽温适应）。
五、选型与使用注意事项
- 封装匹配：确认PCB为0805封装，避免尺寸偏差；
- 功率降额：需遵循松下降额曲线（示例）：
- ≤70℃：满载100mW；
- 70~125℃：降额至50mW；
- 125~155℃：降额至25mW；
- 静电防护：薄膜电阻敏感，存储/焊接需防静电；
- 存储条件：常温干燥（-10~40℃/≤60%RH），避免阳光直射。
总结
ERA3AEB2491V凭借“高精度+宽温+高可靠”的核心特性，成为工业、医疗等领域替代普通电阻的优选方案，可有效提升设备的长期稳定性与信号精度。如需进一步选型，可参考松下官方datasheet确认封装细节与降额参数。
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