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ROHM ESR03EZPJ471
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ROHM ESR03EZPJ471
- Type
- ROHM
- Minimum package
- 5000 圆盘
Technical parameters
- Power
- 250mW
- Electronic Component
- Electronic Component
- Electronic Component
- ROHM
- Electronic Component
- ESR03EZPJ471
- Electronic Component
- 1
- Package
- 0603
- Electronic Component
- SMD Resistor
- Electronic Component
- ±5%
- Electronic Component
- 0.023g
- Electronic Component
- 470Ω
- Electronic Component
- 1
- Electronic Component
- BM0257437667
- Operating Temperature
- 55℃~+155℃
- Operating Voltage
- 150V
- Electronic Component
- ±200ppm/℃
- Resistor Type
- Resistor
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ESR03EZPJ471 产品概述
一、产品简介
ESR03EZPJ471 是 ROHM（罗姆）推出的一款贴片厚膜电阻，阻值为 470Ω，阻值精度 ±5%，额定功率 250mW，封装为 0603（公制 1608，约 1.6mm × 0.8mm）。该型号工作电压上限为 150V，温度系数（TCR）为 ±200ppm/℃，工作温度范围 -55℃ 至 +155℃。凭借小体积与中等功率能力，适合于各类消费电子、工业控制及信号处理电路的通用用途。
二、主要电气与环境参数
- 阻值：470Ω ±5%
- 额定功率：250mW（额定值，实际使用需根据环境温度和散热情况做降额）
- 最大工作电压：150V（指电阻两端允许的最大电压）
- 温度系数：±200ppm/℃（用于估算随温度变化的阻值漂移）
- 工作温度范围：-55℃ 至 +155℃
举例说明温漂影响：从 25℃ 上升到 125℃（ΔT = 100℃），按 ±200ppm/℃ 计算，阻值变化约为 470Ω × 200×10^-6 × 100 ≈ 9.4Ω（约 2%），在设计精度预算时应予以考虑。
三、结构与安装注意
0603 的小尺寸适合高密度贴装，但相应的热阻与散热面积有限，故在高功耗或高环境温度条件下应注意降额使用。常见安装建议：
- 采用推荐的焊盘尺寸和合理过孔/散热铜箔布局以改善散热。
- 兼容常规回流焊工艺，但应避免超出元件允许的温度极限和过长的高温停留时间。
- 在频繁热循环或机械冲击严重的环境中，应关注焊点完整性与应力分布，必要时考虑更大封装或阻值并联分担功率。
四、应用场景
- 通用信号与逻辑线路的分压、上拉/下拉电阻
- LED 驱动和电流限制（注意功耗与电压限制）
- 模拟前端、传感器接口中的阻值匹配与滤波网络
- 消费电子、通讯设备、工业控制板卡等需要小体积中等功率元件的场合
五、设计与可靠性建议
- 功率降额：在高于室温或散热受限的场合，应按器件厂商给出的功率-温度曲线进行降额设计，避免长期工作在极限功率下。
- 温漂管理：若电路对阻值稳定性要求较高，应考虑采用低 TCR 器件或在电路中做温度补偿。
- 耐压验证：对于接近 150V 的应用场景，请在样机阶段做实际耐压与绝缘性能验证。
- 可靠性测试：对极端温度循环、湿热和机械振动敏感的应用场合，建议做加速应力试验以评估长期可靠性。
六、选型建议
若电路对阻值精度、温漂或长期稳定性要求更高，可考虑降低阻值容差（如 ±1%）或选择低 TCR 的金属膜/薄膜电阻；若功率需求超过 250mW，应选用更大封装或功率等级更高的元件。ESR03EZPJ471 在体积受限且需求中等功率与通用稳定性的场合具有较好的性价比。
如需进一步的封装尺寸、回流曲线或可靠性数据，可参考 ROHM 官方规格书或向供应商索取详细资料。
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