WMSIC Electronic Components

UNI-ROYAL 0201WMF4991TEE

Model0201WMF4991TEE
Package0201
BrandUNI-ROYAL
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
UNI-ROYAL 0201WMF4991TEE
Type
UNI-ROYAL
Minimum package
15000 圆盘

Technical parameters

Power
50mW
Electronic Component
Electronic Component
Electronic Component
UNI-ROYAL
Electronic Component
0201WMF4991TEE
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
BM0263519361
Operating Temperature
55℃~+155℃
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.

0201WMF4991TEE 厚膜贴片电阻产品概述

一、产品核心身份与定位

0201WMF4991TEE是厚声电子(UNI-ROYAL) 推出的0201封装厚膜贴片电阻,属于小体积、中精度、宽温适应性的基础被动元件。其设计聚焦于高密度低功耗电路,兼顾成本与性能平衡,是消费电子、工业控制等领域的常规选型之一,可替代同参数的进口品牌产品。

二、关键电气参数详解

该电阻的核心参数明确了性能边界,需结合实际场景理解:

  1. 阻值与精度:标称阻值4.99kΩ(对应贴片代码“4991”——前三位有效数字499,第四位倍率1,即499×10¹=4990Ω),精度±1%。25℃环境下,实际阻值偏差范围为4.94kΩ~5.04kΩ,可满足信号调理、分压电路的误差要求(如传感器输出放大、电源电压检测)。
  2. 功率与电压:额定功率50mW(25℃持续功率),最大工作电压25V。需注意:功率与电压需同时满足——若电阻两端电压达25V,功率将达25²/4990≈125mW(远超额定),实际使用需功率降额(如电压不超15V,功率≈45mW)。
  3. 温度系数(TCR):±200ppm/℃,即温度每变化1℃,阻值变化±0.02%。例如,从25℃升至155℃(变化130℃),阻值偏差约±2.6%,适用于对稳定性要求不极端的宽温场景。

三、物理与环境适应性

  1. 封装尺寸:0201英制封装(公制约0.64mm×0.32mm),是主流贴片电阻中体积较小的规格,可显著节省PCB空间(比0402封装小约50%),适配智能手机、可穿戴设备等高密度设计。
  2. 工作温度范围:-55℃+155℃,覆盖工业级(-40℃+85℃)、汽车级部分场景(-55℃~+125℃)及极端环境(如高温设备周边、寒冷地区户外设备)。
  3. 工艺特性:采用厚膜工艺制造,相比薄膜电阻成本更低、耐脉冲能力更强(可应对短期电压波动),适合大规模量产;同时一致性达千分之几,降低电路调试难度。

四、典型应用场景

结合参数与特性,该电阻的核心应用方向包括:

  1. 消费电子高密度电路:智能手机/平板电脑主板的电源分压、传感器信号调理(如加速度计、光线传感器),利用0201封装节省空间。
  2. 可穿戴设备低功耗设计:智能手环/手表的心率监测、蓝牙模块辅助电路,50mW额定功率满足低功耗需求,宽温范围适配佩戴者不同环境。
  3. 工业控制辅助模块:PLC模拟输入接口、小型传感器节点(如温度传感器)的信号滤波与分压,-55℃~+155℃的宽温范围适应工业现场温度波动。
  4. 汽车电子非关键电路:车载中控按键指示灯分压、座椅传感器信号调理(需确认具体项目认证要求)。

五、品牌与可靠性说明

厚声电子(UNI-ROYAL)是国内电阻制造龙头企业,产品通过ISO 9001、ISO/TS 16949 认证,0201WMF4991TEE的生产工艺成熟,批量一致性稳定。此外,厚膜工艺的可靠性经过市场验证:额定条件下(25℃、50mW)寿命可达10000小时以上,125℃高温环境下仍有数千小时可靠工作时间。

六、选型与使用注意事项

  1. 功率降额:实际使用功率建议不超过额定的50%(即25mW以内),高温环境(>100℃)需进一步降额(如155℃时降额至10mW以内),避免热失效。
  2. 焊接工艺:回流焊峰值温度不超260℃,时间不超10秒;波峰焊浸锡时间<3秒,防止封装损坏。
  3. 精度匹配:±1%精度适用于常规电路,若需高精度(如计量电路)需选择±0.1%以下的薄膜电阻。
  4. 电压限制:实际电压需结合功率计算,避免“过压但功率未超”的误判(如25V电压下功率超额定,需串联电阻分压)。

该产品凭借小体积、宽温、成本优势,成为高密度低功耗电路的实用选型,可满足多数常规电子设备的电阻需求。

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