WMSIC Electronic Components

UNI-ROYAL 1206W4F390KT5E

Model1206W4F390KT5E
Package1206
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 1206W4F390KT5E
Type
UNI-ROYAL
Minimum package
5000 圆盘

Technical parameters

Power
250mW
Electronic Component
Electronic Component
Electronic Component
UNI-ROYAL
Electronic Component
1206W4F390KT5E
Electronic Component
1
Package
1206
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
3.9Ω
Electronic Component
1
Electronic Component
BM0263574761
Operating Temperature
55℃~+155℃
Operating Voltage
200V
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.

1206W4F390KT5E 厚膜贴片电阻产品概述

一、产品基本属性

1206W4F390KT5E是厚声电子(UNI-ROYAL) 推出的一款厚膜贴片电阻,采用行业通用的1206封装(尺寸约3.2mm×1.6mm),属于小功率高精度电阻范畴。该型号通过编码可快速识别核心参数:“1206”对应封装规格,“4F”代表精度等级(±1%),“390”标注标称阻值为3.9Ω,整体定位为消费电子、工业控制等场景的通用型电阻。

二、核心性能参数详解

该电阻的参数设计针对中等精度与宽温需求做了优化,关键指标如下:

  1. 阻值与精度:标称阻值3.9Ω,精度±1%,实际阻值范围为3.861Ω~3.939Ω,能满足多数需要稳定阻值的电路(如信号分压、小电流采样)。
  2. 功率与耐压:额定功率250mW(1/4W),最大工作电压200V——对于1206小封装而言,200V耐压表现优异,可避免低压封装在中高压场景下的击穿风险。
  3. 温度特性:温度系数(TCR)为±200ppm/℃,即环境温度每变化1℃,阻值漂移约±0.00078Ω(3.9Ω×200×10⁻⁶);配合-55℃~+155℃的宽温范围,适合工业现场的极端温度环境。
  4. 环保合规:焊端采用无铅环保设计,符合RoHS与REACH标准,适配全球市场需求。

三、封装与工艺特点

1206封装与厚膜工艺是该电阻的核心优势:

  1. 1206封装适配性:小型贴片封装适配自动化贴装设备,生产效率高;尺寸小巧可节省电路板空间,适合智能手机、便携式设备等高密度电路设计。
  2. 厚膜工艺优势:采用丝网印刷+高温烧结工艺,电阻膜层与陶瓷基底结合牢固,抗机械应力能力强;相比薄膜电阻成本更低,同时具备较好的稳定性与抗浪涌能力,适合批量应用。
  3. 焊接可靠性:焊端采用耐高温合金设计,与PCB焊接强度符合IPC-A-610标准,可避免虚焊、脱焊问题,提升电路长期可靠性。

四、典型应用场景

结合参数特点,该电阻的主要应用场景包括:

  1. 消费电子:智能手机、平板电脑的信号分压、LED指示灯限流,以及电池保护电路的小电流采样。
  2. 工业控制:PLC(可编程逻辑控制器)的信号调理电路、传感器接口的电阻网络,利用宽温特性适应工业现场的温度波动。
  3. 电源模块:DC-DC转换器的输出电流采样(小功率场合)、线性电源的限流电阻,200V耐压可满足部分中高压电源需求。
  4. 汽车辅助电路:车载音响的信号处理、车身控制模块的辅助电阻(需注意汽车电子的更高可靠性要求,但宽温特性可满足基础辅助场景)。

五、可靠性与环境适应性

该电阻通过多项可靠性测试,确保复杂环境下稳定工作:

  1. 温度循环测试:在-55℃~+155℃范围内循环100次,阻值变化率≤±0.5%,温漂控制在TCR范围内。
  2. 耐湿性测试:通过85℃/85%RH高湿环境测试1000小时,电阻性能无明显衰减,适合沿海、户外等湿度较大的场景。
  3. 抗浪涌能力:厚膜工艺赋予其抗短时间过流冲击的能力(如电路启动浪涌),可减少故障概率。
  4. 机械可靠性:通过振动(10~2000Hz,加速度1.5g)与冲击(100g,1ms)测试,适应运输、安装中的机械应力。

总结

1206W4F390KT5E厚膜贴片电阻凭借高精度、宽温特性、小封装及高性价比,成为消费电子、工业控制等领域的通用选型。其稳定的性能与可靠的工艺,适合批量应用于对精度和环境适应性有一定要求的电路设计中。

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