WMSIC Electronic Components

ROHM ESR18EZPF22R0

ModelESR18EZPF22R0
Package1206
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 ESR18EZPF22R0
Type
ROHM
Minimum package
5000 圆盘

Technical parameters

Power
500mW
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
ESR18EZPF22R0
Electronic Component
1
Package
1206
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.029g
Electronic Component
22Ω
Electronic Component
1
Electronic Component
BM0058429627
Operating Temperature
55℃~+155℃
Operating Voltage
200V
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.

ESR18EZPF22R0 厚膜贴片电阻产品概述

一、产品基本属性与核心定位

ESR18EZPF22R0是罗姆(ROHM)推出的1206封装厚膜贴片电阻,属于品牌常规功率系列中的高精度子型号,核心定位为“中等精度、宽温适用、小功率承载”的通用型电阻。其基础属性清晰匹配工业、车载、消费电子等多场景需求,具体参数如下:

  • 电阻类型:厚膜陶瓷电阻(金属氧化物厚膜层)
  • 额定阻值:22Ω(E96系列标称值)
  • 精度等级:±1%(优于常规±5%/±10%电阻)
  • 额定功率:500mW(1206封装标准功率,比0805封装250mW提升1倍)
  • 额定电压:200V(直流/交流峰值电压限制)
  • 温度系数(TCR):±100ppm/℃
  • 工作温度:-55℃~+155℃(工业级宽温)
  • 封装尺寸:1206(英制3.2mm×1.6mm,公制3216)

二、关键性能参数解析

1. 精度与阻值稳定性

±1%精度是该电阻的核心优势,相比普通电阻可更精准实现分压、限流、信号匹配等功能。例如:

  • 音频前置放大偏置电路中,减少阻值偏差对信号增益的影响;
  • 电源反馈回路中,提升输出电压稳定性(偏差≤0.22Ω)。

2. 功率与电流承载

额定功率500mW结合22Ω阻值,最大承载电流约150mA((I=\sqrt{P/R}=\sqrt{0.5/22}≈150mA)),满足大部分小功率电路需求(如单片机I/O限流、LED驱动)。需注意长期工作需降额80%(≤400mW),避免热漂移或寿命缩短。

3. 宽温与温度特性

-55℃+155℃覆盖工业级(-40125℃)和高温车载场景(发动机舱附近);±100ppm/℃的TCR意味着温度每变化100℃,阻值仅变化±0.01Ω,厚膜电阻中属偏优水平,可降低温度对电路性能的影响。

4. 电压限制

200V为直流/交流峰值电压上限,需避免电路中施加电压超过该值(如高压检测电路需控制分压后电压),否则可能导致击穿。

三、封装与工艺特点

1. 1206封装优势

尺寸适中(3.2×1.6mm),兼顾功率承载与PCB高密度布局;焊接兼容性强,适配回流焊、波峰焊等自动化工艺,适合批量制造。

2. 厚膜工艺特性

罗姆采用氧化铝陶瓷基底+金属氧化物厚膜层工艺,相比薄膜电阻(镍铬合金)成本更低、抗硫化/抗机械冲击性能更优;长期可靠性测试显示,阻值漂移≤0.5%,满足工业级长期使用需求。

四、典型应用场景

  1. 工业控制:PLC输入输出接口限流、传感器信号调理分压,宽温适配车间极端环境;
  2. 车载电子:显示屏背光驱动限流、车身控制模块(BCM)信号滤波,155℃高温上限适配发动机舱;
  3. 消费电子:智能手机音频偏置、平板电池保护限流,±1%精度提升音频纯净度;
  4. 电源电路:DC-DC反馈分压、线性稳压器输出限流,200V电压适配中等功率电源。

五、选型与使用注意事项

  1. 功率降额:长期工作≤400mW,短期脉冲功率参考罗姆官方曲线;
  2. 温度容差:125℃以上阻值变化约1%,电路需预留容差;
  3. 焊接规范:回流焊峰值≤245℃(≤10秒),波峰焊≤260℃(≤5秒),避免热应力开裂;
  4. 存储条件:未焊接电阻存储于-40~+60℃、湿度≤60%环境,防止受潮影响焊接。

该电阻凭借“高精度、宽温、高可靠性”的综合性能,成为多领域小功率电路的优选元件,适配自动化生产与恶劣环境需求。

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