WMSIC Electronic Components

Walsin WR06X3903FTL

ModelWR06X3903FTL
Package0603
Brand(Walsin)
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
(Walsin) WR06X3903FTL
Type
WALSIN
Minimum package
5000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
(WALSIN)
Electronic Component
WR06X3903FTL
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.035g
Electronic Component
390kΩ
Electronic Component
10
Electronic Component
BM0263511851
Operating Temperature
55℃~+155℃
Operating Voltage
75V
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.

WR06X3903FTL 厚膜贴片电阻产品概述

一、产品核心身份与定位

WR06X3903FTL是华新科(Walsin)WR系列旗下的0603封装厚膜贴片电阻,属于通用型电子元件,专为满足中低功率、中等精度的电路设计需求开发。该型号以390kΩ阻值为核心参数,搭配±1%精度、100mW额定功率等指标,覆盖消费电子、工业控制、通信设备等多领域的基础电路应用,是电子设计中常见的标准化电阻选型之一。

二、关键性能参数详解

该型号的核心性能参数直接决定了其适用场景,具体如下:

(1)阻值与精度

标称阻值为390kΩ(390×10³Ω),精度等级为±1%,属于工业级通用精度范畴——既避免了高精度电阻(如±0.1%)的成本冗余,又能满足多数信号调理、分压、反馈电路的精度需求(例如电源反馈环路中,±1%精度可保证输出电压波动控制在合理范围)。

(2)功率与电压限制

额定功率为100mW(0.1W),最大工作电压为75V。需注意:功率与电压存在联动限制,实际使用中需同时满足( P=V²/R )的计算关系(如390kΩ电阻在75V下的功率约为14.4mW,远低于100mW额定值,因此电压限制更严格);若环境温度超过25℃,需按功率-温度曲线降额(如155℃时额定功率降额至约20mW)。

(3)温度系数与温宽

温度系数(TCR)为**±100ppm/℃,表示每变化1℃,阻值变化±0.01%——这是厚膜电阻的典型TCR值,能适应多数工业环境的温度波动;工作温度范围为-55℃~+155℃**,覆盖了常规工业级温宽(如汽车电子低温启动、工业现场高温环境),无需额外降额即可稳定工作。

三、封装与工艺特性

(1)封装规格

采用0603封装(英制命名,对应公制1608封装),尺寸约为1.6mm(长)×0.8mm(宽)×0.4mm(厚),属于小型化贴片封装,适配高密度PCB设计(如手机主板、小型通信模块),且支持自动化贴装(回流焊、波峰焊),生产效率高。

(2)厚膜工艺优势

厚膜电阻通过丝网印刷电阻浆料+高温烧结工艺制成,相比薄膜电阻成本更低,相比碳膜电阻稳定性更强;其电阻层与陶瓷基底结合牢固,抗机械冲击、抗振动性能优异,适合长期使用场景(如工业PLC的连续运行)。

四、典型应用场景

WR06X3903FTL因参数均衡,广泛应用于以下场景:

  1. 消费电子:手机、平板的信号分压电路(如麦克风偏置、按键检测)、LED驱动的限流电阻(低功率场景);
  2. 工业控制:PLC输入输出接口的上拉/下拉电阻、传感器信号调理电路(如温度传感器的分压匹配);
  3. 通信设备:射频前端的阻抗匹配电阻、电源模块的反馈电阻(如DC-DC转换器的电压调节);
  4. 汽车电子:低功耗辅助电路(如仪表盘背光控制、车门传感器),需注意需确认是否符合车规要求(华新科部分WR系列支持车规,需结合具体批次);
  5. 电源电路:线性电源的输出分压、电池保护电路的检测电阻。

五、可靠性与环境适应性

该型号具备良好的可靠性:

  • 长期稳定性:厚膜工艺使阻值漂移率低(通常<0.5%/1000小时),适合长期连续工作的设备;
  • 环境耐受性:抗潮湿(符合IEC 60068-2-67标准)、抗盐雾(符合IEC 60068-2-11标准),能适应恶劣环境;
  • 焊接兼容性:支持无铅回流焊(符合RoHS 2.0标准),焊接后无虚焊、开裂风险。

六、选型与使用注意事项

  1. 降额设计:环境温度>25℃时,需按功率-温度曲线降额(例如100℃时降额至50mW),避免过热损坏;
  2. 焊接工艺:回流焊温度需控制在220℃~260℃(峰值),时间<10秒,避免热应力导致电阻性能下降;
  3. 存储条件:未开封产品需存储在温度15℃35℃、湿度40%60%的环境中,开封后12个月内使用完毕;
  4. 替换原则:替换时需保证封装(0603)、阻值(390kΩ)、精度(±1%)、功率(≥100mW)、温度系数(≤±100ppm/℃)一致,避免电路性能波动。

该型号以高性价比、稳定性能成为电子设计中常用的基础元件之一,可满足多数常规电路的功能需求。

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