WMSIC Electronic Components

ROHM ESR03EZPF1203

ModelESR03EZPF1203
Package0603
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 ESR03EZPF1203
Type
ROHM
Minimum package
5000 圆盘

Technical parameters

Power
250mW
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
ESR03EZPF1203
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.022g
Electronic Component
120kΩ
Electronic Component
1
Electronic Component
BM0264889522
Operating Temperature
55℃~+155℃
Operating Voltage
150V
Electronic Component
±100ppm/℃
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 ESR03EZPF1203 厚膜贴片电阻产品概述

一、产品基本信息(核心参数汇总)

ROHM ESR03EZPF1203是一款0603封装厚膜贴片电阻,属于罗姆(ROHM)常规精密电阻系列,核心参数与型号命名高度对应:

  • 型号解析:ESR03(ESR系列,03代表0603封装)→ EZ(厚膜工艺标识)→ PF(精度±1%等级)→ 1203(阻值编码:前3位120+第4位10³=120kΩ);
  • 基础参数:阻值120kΩ±1%、额定功率250mW、最大工作电压150V、温度系数±100ppm/℃、工作温度范围-55℃~+155℃;
  • 品牌与封装:罗姆(ROHM)原厂出品,0603封装(尺寸1.6mm×0.8mm),符合JEDEC J-STD-020标准。

二、设计与工艺特性

该电阻采用厚膜丝网印刷工艺,结合罗姆优化的陶瓷基片与浆料配方,实现了性能与成本的平衡:

  1. 小型化优势:0603封装体积紧凑,适配便携式设备、高密度电路板的小型化需求,相比0805封装体积缩小约60%;
  2. 工艺稳定性:厚膜工艺通过高温烧结形成电阻膜,避免薄膜电阻的易损性,同时阻值一致性优于常规碳膜电阻;
  3. 焊接兼容性:表面贴装设计支持回流焊、波峰焊,焊接温度曲线符合罗姆推荐(峰值温度260℃±5℃,持续时间≤10秒),兼容无铅焊接工艺。

三、电气性能详解

1. 阻值精度与稳定性

±1%的精度满足一般精密电路需求(如分压、信号调理),结合±100ppm/℃的温度系数,在-55℃~+155℃范围内,阻值最大漂移约±2.1%(远低于精度上限),适合温度变化较大的场景;

2. 功率与电压限制

额定功率250mW,需注意功率-电压双限制:

  • 电压限制:150V(当电压超过150V时,即使功率未达250mW也可能损坏);
  • 功率验证:150V下的实际功率为V²/R=150²/120k≈187.5mW,小于额定功率,满足安全使用;

3. 高频特性

0603封装的寄生电感(约1nH)与寄生电容(约0.1pF)较低,可支持100MHz以下的信号电路(如射频滤波、中频放大),但高频性能弱于薄膜电阻,需根据场景选型。

四、可靠性与环境适应性

罗姆通过工艺优化与可靠性测试,确保该电阻适配多场景应用:

  1. 宽温适应性:-55℃+155℃覆盖工业级(-40+85℃)与部分汽车级(-40~+125℃)需求,高温下阻值漂移符合AEC-Q200标准;
  2. 耐湿与抗老化:环氧树脂封装层防潮性优异,通过湿热测试(85℃/85%RH,1000小时)后阻值漂移≤0.5%;
  3. 机械强度:抗振动(10g~2000Hz)与抗冲击(1000g)性能满足便携式设备跌落、工业设备振动场景,无开路/短路风险。

五、典型应用场景

  1. 消费电子:智能手机/平板的电源管理IC(PMIC)分压电阻、音频电路信号衰减、蓝牙模块滤波;
  2. 工业控制:PLC模拟输入模块信号调理、传感器(如温度/压力)输出分压、电机驱动电路限流;
  3. 汽车电子:车载信息娱乐系统背光控制、车身控制模块(BCM)小信号电路、胎压监测系统(TPMS)信号滤波;
  4. 通信设备:路由器/交换机电源滤波、以太网接口信号分配、光模块偏置电路。

六、选型与应用注意事项

  1. 功率降额:高温环境(>125℃)需按罗姆降额曲线使用(如155℃时功率需降至额定的40%以下);
  2. 焊接防护:避免焊接时热冲击(如预热时间不足),否则可能导致阻值漂移;
  3. 存储条件:未焊接电阻需存储在-10℃~+40℃、湿度≤60%的环境中,开封后1个月内焊接完毕;
  4. 场景适配:若需更高精度(<0.5%)或高频(>100MHz),建议替换为罗姆薄膜电阻(如MCR系列);若需更大功率(>250mW),可选0805封装(如ESR08系列)。

该电阻凭借平衡的性能与可靠性,成为消费电子、工业控制等领域的常规选型,符合罗姆“高性能+高性价比”的产品定位。

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