WMSIC Electronic Components

BOURNS 3266W-1-502LF

Model3266W-1-502LF
PackageThrough-hole
BrandBOURNS
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

20 specifications

Core information

Product name
BOURNS 3266W-1-502LF
Type
BOURNS
Unit
Electronic Component
Minimum package
100 管

Technical parameters

Power
250mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
12
Electronic Component
3266W-1-502LF
Electronic Component
1
Package
Through-hole
Electronic Component
Resistor / positions
Electronic Component
±10%
Electronic Component
0.7g
Electronic Component
5kΩ
Electronic Component
1
Electronic Component
BM0211323125
Electronic Component
±100ppm/℃
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

3266W-1-502LF 产品概述

一、产品简介
3266W-1-502LF 为 BOURNS 出品的一款小型多圈可调电阻(电位器/微调电阻),适合在有限空间内对电路进行精细调节与校准。型号中 “502” 表示标称阻值 5kΩ,LF 常用于表明无铅/环保包装。该器件以体积小、调节精细、热稳定性良好而适用于仪表、控制与消费电子等领域的微调场合。

二、主要参数(关键点)

  • 阻值:5 kΩ(标称)
  • 精度/公差:±10%
  • 最大功率耗散:250 mW(环境与安装方式影响实际能耗)
  • 温度系数(TCR):±100 ppm/℃,保证随温度变化的阻值偏移较小
  • 圈数(转数):12 圈,多圈设计提供细腻的调节分辨率与较小的机械回差
  • 引脚/封装:插件(Through-hole),3P(三引脚),外形尺寸约 6.4 × 4.3 mm
  • 品牌:BOURNS

三、结构与封装特点
3266W-1-502LF 为多圈(12-turn)微调电位器,典型为线绕或金属氧化膜型阻元结合多圈机械减速机构。三引脚标准引出:两端为阻值端,中心引脚为滑动触点(wiper),便于作可变电阻或分压器使用。插件(插针)封装便于手工焊接与机器插件,尺寸小巧,适合集成在密集的 PCB 区域。

四、应用场景与优势

  • 校准与微调:适用于对增益、偏置、电压基准等参数进行精细调整的场合。
  • 仪表与测量设备:温漂小(±100 ppm/℃)有利于提高长期稳定性。
  • 控制与接口电路:在模拟前端、ADC 精度校准、参考源微调等位置表现良好。
  • 小型消费电子与工业控制:体积小、安装方便,适合空间受限的 PCB 布局。
    优势集中在多圈高分辨率调节、热稳定性与插件式易于更换维护。

五、选型与使用注意事项

  • 功率与热耗:标称功率 250 mW,实际使用时应考虑散热与环境温度,避免长期满额定功率工作;必要时进行功率余量设计。
  • 阻值容差:±10% 属于较宽的公差区间,若需要高精度阻值应选择更高精度或在生产中配对筛选。
  • 机械寿命与使用力矩:多圈结构需要按指定力矩调节,避免过大扭力导致机械损伤或回差增大。
  • 焊接工艺:插件焊接时注意焊接温度与时间,以防内部结构或焊料进入影响接触可靠性;遵循厂家推荐的回流/手工焊接参数。
  • 环境与清洁:避免强腐蚀性气体、过度湿度及有机溶剂直接侵蚀;清洗时采取对金属触点友好的工艺。

六、安装与维护建议

  • 安装方向:根据电路布局选择合适的朝向,保证旋钮或调节器有足够空间操作,并避免与其他元件干涉。
  • 调节与锁定:调节后如需固定设定,采用电子或机械方式防止震动导致偏移(例如使用封装胶或机械挡块,注意不可直接粘在滑动部位)。
  • 维护周期:高可靠性应用建议在设计验证阶段进行温度循环与寿命测试,以确认在目标环境下的漂移与接触稳定性。
  • 替换与备件:插件式设计便于维修替换,建议在物料清单中预留相同型号的备件以便现场更换。

总结:3266W-1-502LF 以 5kΩ 阻值、12 圈细调、±100 ppm/℃ 的较好温度稳定性以及小巧插件封装为主要特征,适用于需要高分辨率调节与稳定性能的精密微调场合。在选型时需综合考虑功率余量、精度要求与机械寿命,以确保长期可靠运行。

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