WMSIC Electronic Components

UNI-ROYAL 0805W8F2202T5E

Model0805W8F2202T5E
Package0805
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 0805W8F2202T5E
Type
UNI-ROYAL
Minimum package
5000 圆盘

Technical parameters

Power
125mW
Electronic Component
Electronic Component
Electronic Component
UNI-ROYAL
Electronic Component
0805W8F2202T5E
Electronic Component
1
Package
0805
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.027g
Electronic Component
22kΩ
Electronic Component
1
Electronic Component
BM0257245284
Operating Temperature
55℃~+155℃
Operating Voltage
150V
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.

0805W8F2202T5E — 0805厚膜贴片电阻产品概述

一、产品简介

0805W8F2202T5E 为 UNI-ROYAL(厚声)系列的一款厚膜贴片电阻,封装规格为0805(公制2012),阻值 22 kΩ,精度 ±1%,额定功率 125 mW,工作电压 150 V,温度系数(TCR) ±100 ppm/℃,适用工作温度范围 -55 ℃ 至 +155 ℃。该型号适合需要中高阻值、较好稳定性与成本效益的通用电子电路应用。

二、主要参数一览

  • 型号:0805W8F2202T5E
  • 品牌:UNI-ROYAL(厚声)
  • 封装:0805(≈2.0 mm × 1.25 mm)
  • 阻值:22 kΩ
  • 精度:±1%
  • 额定功率:125 mW(一般在参考环境温度下)
  • 额定工作电压:150 V
  • 温度系数:±100 ppm/℃
  • 工作温度范围:-55 ℃ ~ +155 ℃
  • 材料工艺:厚膜(薄膜/厚膜工艺差异见说明)

三、电气与热性能要点

  • 功率与电压关系:通过 P = V^2 / R 可计算在满功率时允许的最大直流电压。代入 R = 22 kΩ、P = 0.125 W,可得 V_max ≈ sqrt(0.125 × 22000) ≈ 52.4 V。这表明虽然器件的标称工作电压为 150 V,但在实际功耗受限情况下,在电阻两端达到约 52.4 V 时将耗散满其额定功率;因此电压限制与功率限制需同时考虑。
  • 温度系数影响:TCR ±100 ppm/℃ 表示每升高 1 ℃ 阻值变化约 ±2.2 Ω(22 kΩ × 100 ppm)。若温度变化 100 ℃,阻值变化约 ±220 Ω,约等于阻值的 ±1%(与器件公差同量级)。因此在精密应用中需考虑环境温度波动的影响。
  • 环境适应性:工作温度范围宽(-55 ℃ 至 +155 ℃),适合工业级别的温度要求,但如需用于汽车或更严苛认证场景,应参考具体认证信息与供应商资料。

四、封装与安装注意

  • 封装尺寸:0805(常见为 2.0 × 1.25 mm),适用于常规贴片工艺与自动化回流焊。
  • 焊接性:厚膜贴片电阻通常可承受常见的无铅回流温度曲线,但推荐按供应商数据手册采用合适的回流曲线和最大峰值温度与时间。避免过长高温暴露以防参数漂移。
  • PCB 设计:建议按制造商推荐的焊盘尺寸布局,保证焊膏体积与焊点形态良好;焊盘对称,避免过长铜箔连接导致散热差异。
  • 取放与防护:贴片元件易受机械应力影响,贴装和波峰/回流焊过程应控制机械应力和过度弯曲,存储时避免潮湿与强污染。

五、典型应用场景

  • 消费类电子:信号电路、分压器、上拉/下拉电阻、滤波网络等。
  • 工业控制:传感器前端、测量电路、接口电阻等(在满足温漂与精度要求时)。
  • 通信与测试设备:用于要求稳定阻值与有限温度系数的非关键精密场合。
  • 一般用途电路中作为通用精密单片电阻:适合需要 ±1% 精度且成本敏感的设计。

六、使用与可靠性建议

  • 功率裕度:在电路设计中应留有适当的功率裕度(通常建议在额定功率下的使用率低于 50–70% 以提高可靠性),并考虑 PCB 散热条件对实际功耗能力的影响。
  • 温度影响评估:若工作环境温度波动较大,请在设计时把 TCR 带来的阻值偏差计入容差预算,或采用更低 TCR 的元件以保证长期稳定。
  • 测试与筛选:在重要产品中,建议进行批次抽样的温度循环、寿命测试与焊接可靠性测试,以验证元件在目标应用下的稳定性与一致性。
  • 参考数据手册:上述为通用概要说明,具体的焊接曲线、湿热、耐焊性与机械冲击等可靠性指标请以供应商技术手册为准。

七、总结

0805W8F2202T5E(UNI-ROYAL 厚声)是一款面向通用电子与工业类应用的 0805 厚膜贴片电阻,具有 22 kΩ 阻值、±1% 精度和 ±100 ppm/℃ 的温度系数,额定功率 125 mW、工作电压标称 150 V,能在宽温区间稳定工作。其特点是成本效益好、封装通用、适合大批量贴装。设计时需特别注意功耗与电压的交互限制、温漂影响以及可靠性验证。若用于关键或特殊工况(如高振动、汽车级认证或更高精度需求),建议向供应商索取详细数据手册及认证资料。

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