WMSIC Electronic Components

ROHM ESR10EZPJ121

ModelESR10EZPJ121
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 ESR10EZPJ121
Type
ROHM
Minimum package
5000 圆盘

Technical parameters

Power
400mW
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
ESR10EZPJ121
Electronic Component
1
Package
805
Electronic Component
SMD Resistor
Electronic Component
±5%
Electronic Component
0.027g
Electronic Component
120Ω
Electronic Component
1
Electronic Component
BM0257621569
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.

ROHM ESR10EZPJ121 厚膜贴片电阻产品概述

一、产品核心定位

ROHM(罗姆)ESR10EZPJ121是一款通用型厚膜贴片电阻,主打“小尺寸、中功率、宽温稳定”的核心特性,专为消费电子、工业控制、电源设备等场景设计,平衡了成本与可靠性,是批量应用中替代传统插件电阻的高性价比选择。

二、关键参数深度解析

该电阻的核心参数明确了其应用边界,需结合实际场景理解:

  • 阻值与精度:120Ω±5%,属于常见标准阻值,±5%精度满足大多数非高精度电路(如分压、限流、信号匹配)的需求,无需额外校准即可稳定工作;
  • 功率规格:额定功率400mW(25℃环境下),是“中功率”定位的核心——既避免了小功率电阻(如1/16W)的功率不足,又通过805封装实现尺寸优化,适合50mA以内电流的电路(如120Ω×50mA=0.3W,接近额定值);
  • 温度特性:±200ppm/℃的温度系数,解释为“每升高1℃,阻值变化±0.02%”——若工作在155℃(最高温),比室温25℃高130℃,阻值变化约±2.6%,仍在±5%精度范围内,保证宽温下性能稳定;
  • 宽温范围:-55℃~+155℃,覆盖工业级环境(如户外设备、车间控制)的温度波动,无需额外散热或温度补偿;
  • 封装尺寸:805封装(公制约2.0×1.25mm),属于小型贴片封装,适配高密度PCB布局(如智能手机、智能穿戴主板)。

三、封装与工艺特性

ESR10EZPJ121采用厚膜丝网印刷工艺,在氧化铝陶瓷基板上印刷电阻浆料后烧结成型,相比薄膜电阻成本更低,相比碳膜电阻稳定性更高:

  • 封装可靠性:805封装的引脚设计适配回流焊工艺,抗机械应力能力强,适合批量SMT生产;陶瓷基板耐高温、抗腐蚀,延长产品寿命;
  • 工艺一致性:罗姆的厚膜工艺实现批次间阻值偏差极小(远低于±5%精度要求),避免电路因电阻差异导致性能波动。

四、典型应用场景

结合参数特性,该电阻适用于以下场景:

  1. 消费电子:智能手机、平板的电源管理电路(如电池保护板限流)、音频信号分压电路;
  2. 工业控制:PLC输入输出接口、传感器信号调理电路(宽温适配车间/户外环境);
  3. 电源设备:小型开关电源的反馈电阻、LED驱动电路的限流电阻(400mW满足小功率LED电流限制);
  4. 通信设备:路由器、基站的信号衰减电路(150V耐压满足射频信号线路电压要求)。

五、性能优势总结

  • 宽温稳定:-55~155℃覆盖工业级,温度系数适配普通电路精度需求;
  • 功率-尺寸平衡:400mW功率在805封装中表现突出,无需牺牲尺寸提升功率;
  • 高性价比:厚膜工艺降低成本,罗姆品质保证批量可靠性;
  • 易集成:小尺寸封装适配高密度PCB,适合小型化产品设计。

六、选型与使用注意事项

  1. 功率降额:实际工作功率建议不超过额定的50%(环境温度>100℃时需降额至30%以下),避免过热损坏;
  2. 电压限制:严禁超过150V最大工作电压,否则可能击穿电阻导致电路短路;
  3. 焊接规范:遵循罗姆推荐的回流焊曲线(峰值温度245±5℃,时间<10s),避免热冲击导致阻值漂移;
  4. 精度匹配:若需±1%或更高精度,需选择罗姆薄膜电阻系列,ESR10EZPJ121仅适合非高精度场景。

该产品凭借稳定的性能与成本优势,成为电子工程师在通用电路设计中的常用选型之一,尤其适合对温度、功率有基础要求的批量应用。

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