WMSIC Electronic Components

FH RC-01W4991FT

ModelRC-01W4991FT
Package0201
BrandFH
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
FH RC-01W4991FT
Type
FH
Minimum package
15000 圆盘

Technical parameters

Power
50mW
Electronic Component
Electronic Component
Electronic Component
FH
Electronic Component
RC-01W4991FT
Electronic Component
1
Package
0201
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.008g
Electronic Component
4.99kΩ
Electronic Component
50
Electronic Component
BM0265809685
Operating Temperature
55℃~+125℃
Operating Voltage
25V
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.

风华RC-01W4991FT厚膜片式电阻产品概述

一、产品定位与品牌背景

RC-01W4991FT是国内被动元件龙头风华高科(FH品牌) 推出的0201封装通用厚膜片式电阻,定位于小型化、高密度电子设备的核心电阻需求。风华高科作为国内最早布局片式电阻研发生产的企业之一,其厚膜电阻系列以“批量一致性好、成本可控、环境适应性强”为核心优势,覆盖消费电子、工业控制、汽车电子等多领域。RC-01W4991FT是该系列中针对“小封装+中功率+稳定精度”场景的典型型号,可直接替代同类进口品牌,性价比突出。

二、核心电气参数详解

该型号的电气性能精准匹配多数通用电路设计,关键参数如下:

  1. 阻值与精度:标称阻值4.99kΩ(对应E96系列标识“4991”,即499×10¹),精度±1%——此精度等级可覆盖80%以上的消费类电子、工业控制电路的误差要求,无需额外校准即可稳定工作;
  2. 功率与电压:额定功率50mW(0201封装的标准功率等级),最大连续工作电压25V——需注意:脉冲电压需参考风华 datasheet 限制(一般脉冲宽度≤1ms时不超50V),避免击穿;
  3. 温度系数(TCR):±200ppm/℃——表示温度每变化1℃,阻值变化±0.02%,适合多数环境温度变化平缓的场景(如室内设备);若需高精度温稳(如医疗传感器),需搭配温度补偿;
  4. 工作温度范围:-55℃~+125℃——覆盖工业级环境要求,可稳定工作于户外设备、高温车间等场景(需配合功率降额)。

三、封装与物理特性

RC-01W4991FT采用0201英制封装(公制尺寸0.6mm×0.3mm),是目前小型化设备的主流封装之一,具有以下特点:

  1. 尺寸紧凑:适合智能手机、智能手环等便携式设备的高密度PCB布局,可有效缩小产品体积;
  2. 厚膜工艺:通过丝网印刷、高温烧结制备,相比薄膜电阻成本低30%,相比碳膜电阻耐冲击、抗硫化性能更优;
  3. 焊接兼容性:支持回流焊、波峰焊等常规贴片工艺,焊接温度需符合风华推荐曲线(峰值245℃±5℃,时间≤10s),避免热应力导致阻值漂移。

四、典型应用场景

该型号因小封装、稳定可靠的特点,广泛应用于:

  1. 消费电子:智能手机传感器分压电路、可穿戴设备电源滤波网络、蓝牙耳机信号调理电路;
  2. 工业控制:PLC输入输出接口电阻、小型电机驱动限流电阻、工业传感器信号转换电路;
  3. 汽车电子:车载仪表盘背光调节、车门控制模块辅助电路(需确认汽车级认证,部分场景可替代);
  4. 医疗设备:便携式监护仪信号放大电路、小型医疗传感器分压电阻(需配合EMC防护)。

五、可靠性与使用注意事项

为确保长期稳定工作,需注意:

  1. 功率降额:125℃高温下需将功率降额至30mW(额定的60%),避免过热失效;
  2. 环境防护:厚膜电阻抗硫化优于碳膜,但沿海高湿度、高硫化物环境需涂覆三防漆;
  3. 存储条件:未焊接电阻需存于-20℃~+30℃、湿度≤60%环境,避免引脚氧化;
  4. 焊接规范:回流焊需控制峰值温度,避免超过250℃导致封装开裂。

六、选型对比参考

若需替代或升级,可参考:

  • 更高精度(±0.1%):选风华薄膜电阻RC-01F4991FT(成本提升30%);
  • 更大功率(1/8W):选0402封装RC-03W4991FT(体积增大);
  • 更低温漂(±50ppm/℃):选金属膜电阻,适合高精度仪器。

综上,RC-01W4991FT是一款“小封装、高性价比、工业级可靠”的通用厚膜电阻,可满足多数小型化电子设备的核心电阻需求,是国产替代进口的优质选择。

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