WMSIC Electronic Components

BOCHEN 3296W-1-253 Trimmer Potentiometer 3296W

Model3296W-1-253
PackageTHT
BrandBOCHEN
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
BOCHEN 3296W-1-253
Type
THT
Minimum package
50 圆盘

Technical parameters

Power
500mW
Electronic Component
Electronic Component
Electronic Component
BOCHEN
Electronic Component
30
Electronic Component
3296W-1-253
Electronic Component
1
Package
Through-hole
Electronic Component
Resistor / positions
Electronic Component
±10%
Electronic Component
1.125g
Electronic Component
25kΩ
Electronic Component
1
Electronic Component
BM0265995079
Electronic Component
±250ppm/℃
Electronic Component
Electronic Component
Electronic Component
50

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

3296W-1-253 多圈可调电位器产品概述

3296W-1-253是博晨(BOCHEN)品牌推出的一款插件式多圈可调电位器,属于3296W系列核心型号之一,以中等阻值、多圈精细调节、稳定性能为核心特点,适配工业控制、仪器校准、消费电子等多场景的参数微调需求。

一、产品定位与核心参数梳理

该型号的核心参数明确了其应用边界与性能定位,具体如下:

  • 阻值规格:25kΩ(型号中“253”表示25×10³Ω),属于中值电阻范畴,适配中等信号幅度的调节场景;
  • 精度等级:±10%,满足非高精度应用的基础误差要求;
  • 额定功率:500mW(0.5W),支持小功率电路的长期稳定工作;
  • 温度系数:±250ppm/℃,即温度每变化1℃,阻值变化±0.025%,环境适应性较好;
  • 调节圈数:30圈,属于多圈电位器设计,调节分辨率远高于单圈电位器;
  • 封装形式:插件式(直插引脚),适配传统电路板焊接工艺,安装便捷。

二、关键性能指标解析

1. 阻值与精度:满足通用调节需求

25kΩ阻值是工业与消费电子中的常用规格,既不会因阻值过小导致电流过大(超出功率限制),也不会因阻值过大影响信号强度。±10%的精度无需额外校准即可满足大多数传感器零点调节、电源电压微调等场景,若需更高精度可搭配后续校准环节。

2. 功率与温度系数:稳定工作的核心保障

  • 500mW额定功率:实际使用中需注意功耗限制,例如当调节至25kΩ全阻时,最大允许电流约为4.5mA(I=√(P/R)=√(0.5/25000)≈4.47mA),若电流超过此值易导致内部发热损坏;
  • ±250ppm/℃温度系数:以25℃为基准,若环境温度变化至100℃(温差75℃),阻值变化约为0.75%(75×0.025%),该稳定性可满足汽车电子、户外仪器等温度波动场景的需求。

3. 30圈调节:精细度升级

单圈电位器的调节步长通常为10%左右,而30圈设计可将步长压缩至约0.33%(1/30),适合万用表增益校准、PLC模拟量输入校准等需要精确参数匹配的场景,避免单圈调节的“过调”问题。

三、结构与封装特点

3296W-1-253采用陶瓷基体+金属电阻膜结构,该结构相比碳膜电位器具有更好的温度稳定性与耐磨性:

  • 封装形式:插件式(3引脚直插),引脚间距符合标准PCB设计规范,焊接时可采用手工焊或波峰焊(需控制焊接温度≤260℃,时间≤3秒,避免陶瓷基体开裂);
  • 调节方式:顶部十字螺丝刀调节,无需额外工具即可在电路板上完成参数微调,适配面板安装或嵌入式安装;
  • 体积紧凑:直径约10mm,高度约5mm(立式封装),可在高密度电路板中灵活布局。

四、典型应用场景

结合其参数特点,该型号的核心应用场景包括:

  1. 工业控制领域:PLC模拟量输入模块的信号校准、变频器参数微调、温度传感器的零点/增益调节;
  2. 仪器仪表行业:万用表的精度校准、示波器的垂直增益调节、信号发生器的输出幅度微调;
  3. 消费电子领域:音频设备的音量精细调节、线性电源的输出电压校准、LED驱动电路的电流微调;
  4. 汽车电子辅助:小功率传感器(如压力传感器)的信号调理、车载音响的平衡调节。

五、选型与使用注意事项

  1. 选型匹配:需确认应用场景的阻值需求(25kΩ是否匹配)、功率需求(不超过500mW)、调节精度需求(30圈是否足够);
  2. 安装规范:焊接时避免引脚受力弯曲,插件后需确认引脚与PCB焊盘接触良好,防止虚焊;
  3. 调节限制:不要超过30圈的调节范围(通常标有“MIN”“MAX”标识),过度旋转会损坏内部电阻膜;
  4. 环境防护:避免长期暴露在潮湿、腐蚀性气体环境中,插件式引脚易氧化,必要时可做涂覆处理;
  5. 功率降额:若环境温度超过85℃,需将额定功率降额至80%(即400mW),防止过热失效。

总结而言,3296W-1-253以高性价比、稳定性能、多圈精细调节为核心优势,是通用电子电路中参数微调的经典选型,可满足大多数非高精度应用的需求。

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