WMSIC Electronic Components

ROHM ESR10EZPJ472

ModelESR10EZPJ472
Package805
BrandROHM
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ROHM ESR10EZPJ472
Type
ROHM
Minimum package
5000 圆盘

Technical parameters

Power
400mW
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
ESR10EZPJ472
Electronic Component
1
Package
805
Electronic Component
SMD Resistor
Electronic Component
±5%
Electronic Component
0.027g
Electronic Component
4.7kΩ
Electronic Component
1
Electronic Component
BM0259723374
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.

ESR10EZPJ472 产品概述

一、产品简介

ESR10EZPJ472 为 ROHM(罗姆)品牌的贴片厚膜电阻,封装为 0805(标注为 805),标称阻值 4.7kΩ,公差 ±5%。该型号属于通用功率型贴片电阻,额定耗散功率 400mW,适合要求中等功率承载与体积受限的表面贴装电路。工作温度范围宽(-55℃ 至 +155℃),适应工业级环境。

二、主要电气参数

  • 电阻类型:厚膜电阻
  • 阻值:4.7 kΩ(472)
  • 精度:±5%(J)
  • 额定功率:400 mW(封装和环境温度有关)
  • 工作电压:150 V(最大工作电压,超出会影响可靠性)
  • 温度系数(TCR):±200 ppm/℃
  • 工作温度范围:-55℃ ~ +155℃
  • 封装:0805(805 表示尺寸代码)

三、产品特性与优势

  • 稳定性:厚膜工艺在常规环境下具有良好长期稳定性,适合成本与性能平衡的应用。
  • 宽温度范围:-55℃ 到 +155℃,适合工业级温度波动场景。
  • 中等功率承载:0805 封装下提供 400mW 额定耗散,适用于中等功率限制的设计。
  • 成本效益高:厚膜贴片电阻在同类产品中具有价格优势,适合批量生产和常规电路使用。

四、典型应用场景

  • 工业与仪表:分压网络、偏置和反馈回路。
  • 电源与控制模块:限流、取样、分压。
  • 通信设备与消费电子:一般信号路径中作为阻性元件使用。
  • 原型与批量量产的通用电路板替换件。

五、封装与组装注意事项

  • 功率降额:额定 400mW 为典型值,实际可用功率随环境温度与 PCB 散热条件降低。建议参照厂家功率降额曲线并留足裕量。
  • 焊接工艺:建议遵循 ROHM 或器件供应商的回流焊温度曲线规范,避免超温或过长加热导致元件应力。
  • PCB 布局:为提高散热,尽量增大焊盘面积和铜箔散热路径;若用于高功率或高温环境,应考虑热管理设计。
  • 机械应力:贴片电阻对过大的弯曲或挤压敏感,装配与夹紧时应避免对元件施加直接机械力。

六、可靠性与环境特性

  • 温漂与精准度:TCR ±200 ppm/℃ 与 ±5% 的公差意味着阻值随温度有可预见的变化,适合对精度要求不苛刻的场合。
  • 环境适应:工作温度范围和厚膜特性使其适应广泛环境,但在潮湿、腐蚀性气体或长期高功率工作场合,应考虑封装保护或选用高可靠度元件。
  • 质量与测试:常通过焊接可靠性、温循环、湿热和机械冲击等电子元件通用测试,具体参数应参考厂商数据手册。

七、选型及替代建议

  • 若需要更高精度或更低温漂:可考虑金属膜或薄膜电阻(低 TCR、1% 或更高精度)。
  • 若需更高功率或更严格热管理:选择更大封装(1206、2010)或专用功率电阻。
  • 若工作电压或环境更苛刻:确认器件的最大工作电压与绝缘特性,必要时选择额定电压更高或带有保护涂层的型号。

总结:ESR10EZPJ472(ROHM,0805,4.7kΩ,±5%,400mW)是一款性价比高、适用于常规工业与消费类电路的厚膜贴片电阻。设计时应关注功率降额、温漂和焊接工艺,以确保长期可靠运行。如需精确参数曲线或可靠性报告,请参考 ROHM 官方数据手册或向供应商索取详细资料。

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