WMSIC Electronic Components

ROHM SFR03EZPF4701

ModelSFR03EZPF4701
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 SFR03EZPF4701
Type
ROHM
Minimum package
5000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
SFR03EZPF4701
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.021g
Electronic Component
4.7kΩ
Electronic Component
1
Electronic Component
BM0230826091
Operating Temperature
55℃~+155℃
Electronic Component
±100ppm/℃
Resistor Type
Resistor
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ROHM SFR03EZPF4701 厚膜贴片电阻产品概述

一、产品核心身份与定位

ROHM SFR03EZPF4701是罗姆半导体推出的一款0603封装通用厚膜贴片电阻,聚焦消费电子、工业控制、通信等领域的小信号电路设计。该产品以稳定的电性能、宽温度适应性和高性价比为核心优势,适配多数中精度、中小功率场景的基础电路需求,是自动化生产中常用的标准化元件。

二、关键电参数详解

该电阻的核心参数明确,支撑基础电路的可靠运行:

  • 阻值与精度:标称阻值4.7kΩ(电阻代码“4701”,即470×10¹),精度±1%,满足信号调理、分压限流等非极端精度需求;
  • 功率额定值:100mW,符合0603封装的常规功率设计,可稳定承载小信号电路的功率消耗;
  • 温度系数(TCR):±100ppm/℃,意味着每变化1℃阻值漂移≤0.01%,例如125℃下总漂移约1.25%,仍在精度允许范围内;
  • 工作温度范围:-55℃~+155℃,覆盖工业级温度区间,可适应低温环境(如户外设备)或高温环境(如车载辅助电路)。

三、封装与物理特性

采用0603表面贴装封装(英制命名,对应公制尺寸1.6mm×0.8mm×0.45mm),具备以下物理优势:

  • 体积紧凑:小尺寸适配高密度PCB布局,尤其适合便携式设备、小型化模块(如智能手环、传感器节点);
  • 贴装兼容:符合标准SMD工艺,支持回流焊、波峰焊自动化生产,焊接可靠性高;
  • 机械强度:陶瓷基底+厚膜烧结结构,抗机械应力能力优于薄膜电阻,满足振动环境(如工业设备、汽车)的使用需求。

四、厚膜电阻技术优势

依托罗姆成熟的厚膜工艺,该产品具备区别于薄膜电阻的特性:

  1. 成本效益:无需真空镀膜等复杂工序,性价比高于薄膜电阻,适合大规模量产;
  2. 长期稳定性:烧结后的电阻膜与陶瓷基底结合紧密,1000小时高温负荷(125℃+额定功率)阻值变化≤0.5%;
  3. 抗浪涌能力:厚膜结构耐短时间过压冲击,优于薄膜电阻,适合易受脉冲干扰的电路;
  4. 功率密度:在0603小封装下实现100mW功率,满足多数小信号电路的功率承载需求。

五、典型应用场景

参数特性使其适配多种电路设计:

  • 消费电子:手机电源偏置、平板音频分压、LED背光限流;
  • 工业控制:PLC输入输出限流、传感器信号调理;
  • 通信设备:路由器射频偏置、交换机电源反馈回路;
  • 汽车电子(辅助电路):仪表盘指示灯限流、小功率传感器信号处理(需确认对应汽车级认证型号);
  • 智能家居:智能开关信号调理、温湿度传感器分压。

六、可靠性与环境适应性

罗姆对该产品进行多维度可靠性验证,符合行业标准:

  • 温度循环:-55℃~155℃循环1000次,阻值变化≤0.5%;
  • 湿度老化:85℃/85%RH存储1000小时,阻值变化≤0.5%;
  • 焊接兼容性:回流焊峰值260℃(持续10秒)无开裂、阻值漂移;
  • 振动测试:符合MIL-STD-202标准(10~2000Hz,加速度2g),无开路或性能下降。

七、选型与替代参考

若需调整参数,可参考以下方向:

  • 同参数替代:国巨0603系列4.7kΩ±1%100mW、三星CL0603系列同规格产品;
  • 精度升级:±0.1%精度可选罗姆RT系列薄膜电阻(如RT03EZPF4701);
  • 功率升级:200mW需求可选0805封装(如ROHM SFR08系列);
  • 宽温扩展:+175℃需求可选罗姆汽车级SR系列厚膜电阻。

该产品凭借稳定的性能和适配性,成为各领域小信号电路的常规选型元件,满足量产与可靠性双重需求。

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