WMSIC Electronic Components

BOURNS 3540S-1-103L

Model3540S-1-103L
PackageThrough-hole-3P, D22.2mm
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 25+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
BOURNS 3540S-1-103L
Type
BOURNS
Unit
Electronic Component
Minimum package
5 托盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
BOURNS
Electronic Component
10
Electronic Component
3540S-1-103L
Electronic Component
1
Package
Through-hole-3P, D22.2mm
Electronic Component
Resistor / positions
Electronic Component
±5%
Electronic Component
21.2g
Electronic Component
10kΩ
Electronic Component
5
Electronic Component
BM0264398991
Electronic Component
±50ppm/℃
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.

BOURNS 3540S-1-103L 线绕电位器产品概述

一、产品定位与核心身份

BOURNS 3540S-1-103L是一款工业级多圈线绕电位器,属于BOURNS经典3540S系列产品。其核心参数明确:阻值10kΩ、功率2W、线性调整特性、10圈旋转设计,主要面向需要稳定阻值精度、中等功率承载能力及精细调整需求的电子电路场景,广泛适配工业控制、电源系统、测试测量等领域。

二、基础参数详解

该电位器的关键参数直接决定应用适配性,具体如下:

参数项 数值/规格 说明 标称阻值 10kΩ(10×10³Ω) 型号中“103”为阻值代码(10×10³) 阻值精度 ±5% 工业级常见精度,满足多数校准/调节需求 额定功率 2W(连续工作) 常温(25℃)下的最大连续承载功率 温度系数(TC) ±50ppm/℃ 阻值随温度变化的速率,线绕结构带来稳定性优势 调整特性 线性(Linear) 阻值随旋转角度线性变化,便于电路计算 旋转圈数 10圈 多圈设计提升调整分辨率 工作温度范围 -55℃ ~ +125℃ 宽温适配工业/车载等极端环境 封装类型 3540S系列标准封装 适配PCB焊接或面板安装(轴长可选) 功率降额特性 高温下线性降额 125℃时功率降额至1W,85℃以上需按曲线降额

三、核心技术特性

作为线绕电位器,3540S-1-103L在结构与性能上具备显著优势:

  1. 线绕电阻丝的稳定性
    采用镍铬合金电阻丝绕制,相比碳膜/金属膜电位器,温度系数更低(±50ppm/℃),长期工作阻值漂移小(≤±1%),适合需要长期稳定的校准场景。

  2. 10圈多圈调整的分辨率
    单圈调整角度36°对应阻值变化1kΩ(10kΩ/10圈),分辨率比单圈电位器提升10倍,可实现精细参数调节(如电源输出电压的微小校准)。

  3. 线性调整的易用性
    阻值与旋转角度线性对应,电路设计中无需复杂的非线性补偿,调试效率更高,尤其适合模拟信号调节、电压分压等场景。

  4. 宽温与功率的适配性
    2W额定功率满足中等功率电路需求(如12V电源的100mA负载分压),-55℃~+125℃宽温范围覆盖工业现场(如户外控制柜)、车载电子(如发动机舱辅助电路)等极端环境。

  5. 密封防护的可靠性
    3540S系列采用密封结构,防止灰尘、湿气侵入,配合BOURNS的可靠性测试(振动、冲击、湿热),寿命可达10000次以上旋转无故障。

四、典型应用场景

结合参数特性,3540S-1-103L的核心应用场景包括:

  1. 工业控制电路
    PLC模拟量输入校准、电机驱动速度调节、传感器信号偏移补偿(如温度传感器的零点校准)。

  2. 电源系统
    开关电源输出电压校准、线性电源电压调整、电池管理系统(BMS)的参数微调(如均衡电流调节)。

  3. 测试测量设备
    示波器垂直增益校准、信号发生器输出幅度调整、万用表精度校准(如电阻档的满偏校准)。

  4. 汽车电子辅助电路
    车载音响均衡器调节、仪表盘亮度调节、胎压监测传感器信号预处理(宽温适配发动机舱环境)。

  5. 航空航天辅助设备
    机载通信设备信号衰减、卫星设备电源分压(宽温与可靠性需求匹配)。

五、品牌与可靠性优势

BOURNS作为全球被动元器件领导者,3540S系列产品具备:

  • 严格可靠性测试:通过MIL-STD-202标准的振动(20Hz~2000Hz)、冲击(150g)、湿热(40℃/95%RH)测试,满足工业级可靠性要求;
  • 批量一致性:批量生产阻值偏差控制在±5%以内,无批次差异;
  • 环保合规:符合RoHS、REACH等全球环保标准,适配出口市场需求。

六、应用注意事项

  1. 功率降额:工作温度超过85℃时,需按温度系数降额功率(如100℃时降额至1.5W,125℃时降额至1W);
  2. 安装适配:需根据实际需求选择轴长(3540S系列轴长可选6mm/10mm等),避免轴过长导致安装干涉;
  3. 调整范围:10圈设计的有效调整范围为90%标称阻值(±5%精度范围内),避免过度旋转导致机械损坏;
  4. 焊接温度:PCB焊接时温度不超过260℃(持续时间≤3秒),防止密封结构损坏。

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