Datasheet> 器件分类 > 无源元件> 电阻器> 81U4C-T22-B22/B22/B22/B22

文档预览

81U4C-T22-B22/B22/B22/B22: 产品描述Potentiometer, Conductive Plastic, 2W, 250000ohm, 20% +/-Tol, -1000,1000ppm/Cel,; 产品类别无源元件电阻器; 文件大小398KB，共6页; 制造商Bourns; 官网地址http://www.bourns.com

下载文档详细参数全文预览

81U4C-T22-B22/B22/B22/B22概述

Potentiometer, Conductive Plastic, 2W, 250000ohm, 20% +/-Tol, -1000,1000ppm/Cel,

81U4C-T22-B22/B22/B22/B22规格参数

参数名称	属性值
是否Rohs认证	不符合
Objectid	839516342
Reach Compliance Code	unknown
YTEOL	0
构造	Square
引线长度	12.7 mm
最高工作温度	125 °C
最低工作温度	-40 °C
封装高度	15.88 mm
封装长度	15.88 mm
封装形式	PCB Mount
封装宽度	46.36 mm
额定功率耗散 (P)	2 W
电阻	250000 Ω
电阻器类型	POTENTIOMETER
旋转角	240 deg
系列	81
技术	CONDUCTIVE PLASTIC
温度系数	1000 ppm/°C
容差	20%

文档预览

下载PDF文档

全文
预览

VE S CO

AV R M

AI SIO PL

LA N IA

BL S NT

Features

■

Metal shaft and bushing

■

Consistent, smooth quality feel

■

Up to 4 sections available

■

Rotary switch option designed

Non-RoHS models are currently

available, but not recommended

for new designs. See

Product

Obsolescence Memo

for details.

for “on-off” function control

■

RoHS compliant versions available*

81/82 - 5/8 ” Square Single-Turn Panel Control

85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch

Potentiometer Speciﬁcations

Initial Electrical Characteristics

Conductive Plastic Element

Cermet Element

Standard Resistance Range

Linear Tapers (A, B, E, & H) ..................................................................(B & E) 1 K ohms to 1 megohm ............. (A & H) 100 ohms to 1 megohm

Audio Tapers (C, D, F, G, S, & T) .........................................................(D, G, S, & T) 1 K ohms to 1 megohm ... (C & F) 1 K ohms to 1 megohm

Total Resistance Tolerance .........................................................................±20 % or 10 % ...................................... ±10 % or 5 %

Independent Linearity .................................................................................±5 % ...................................................... ±5 %

Absolute Minimum Resistance ...................................................................2 ohms maximum .................................. 2 ohms maximum

Effective Electrical Angle ............................................................................(Linear tapers) 240 ° ± 5 °...................... (Linear tapers) 240 ° ± 6 °

(Audio tapers) 225 ° ± 5 ° ...................... (Audio tapers) 225 ° ± 6 °

Contact Resistance Variation .....................................................................±1 % ...................................................... ±1 % or 3 ohms (whichever is greater)

Dielectric Withstanding Voltage (MIL-STD-202, Method 301)

Sea Level ..............................................................................................1,500 VAC minimum .............................. 1,500 VAC minimum

70,000 Feet ..........................................................................................500 VAC minimum ................................. 500 VAC minimum

Insulation Resistance (500 VDC) ................................................................1,000 megohms minimum ..................... 1,000 megohms minimum

Power Rating At 70 °C (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less)

+70 °C Single Section Assembly .........................................................(Linear tapers) 0.5 watt .......................... (Linear tapers) 2 watts

(Audio tapers) 0.25 watt ........................ (Audio tapers) 1 watt

+70 °C Multiple Section Assembly.......................................................(Linear tapers) 0.5 watt/section ............. (Linear tapers) 1 watt/section

(Audio tapers) 0.25 watt/section ........... (Audio tapers) 0.5 watt/section

+125 °C ................................................................................................0 watt..................................................... 0 watt

Theoretical Resolution ................................................................................Essentially inﬁnite .................................. Essentially inﬁnite

Environmental Characteristics

Operating Temperature Range ...................................................................-40 °C to +125 °C.................................. -40 °C to +125 °C

Storage Temperature Range ......................................................................-55 °C to +125 °C.................................. -55 °C to +125 °C

Temperature Coefﬁcient Over Storage Temperature Range ......................±1,000 ppm/°C ...................................... ±150 ppm/°C

Vibration (Single Section) ...........................................................................15 G ....................................................... 15 G

Total Resistance Shift ...........................................................................±2 % maximum ..................................... ±2 % maximum

Voltage Ratio Shift ................................................................................±5 % maximum ..................................... ±5 % maximum

Shock (Single Section) ...............................................................................30 G ....................................................... 30 G

Total Resistance Shift ...........................................................................±2 % maximum ..................................... ±2 % maximum

Voltage Ratio Shift ................................................................................±5 % maximum ..................................... ±5 % maximum

Load Life.....................................................................................................1,000 hours ........................................... 1,000 hours

Total Resistance Shift ...........................................................................±10 % maximum ................................... ±5 % maximum

Rotational Life (No Load) ............................................................................100,000 cycles ...................................... 100,000 cycles

Total Resistance Shift ...........................................................................(Linear taper) 10 ohms or ..................... (All tapers) ±5 % TRS maximum

±10 % TRS max. (whichever is greater)

(Audio taper) ±20 % maximum

Contact Resistance Variation @ 50,000 cycles

(Audio taper) ..................................................................................±3 % ...................................................... ±3 %

(Linear taper) .................................................................................±2 % ...................................................... ±2 %

Moisture Resistance (MIL-STD-202, Method 103, Condition B)

Total Resistance Shift ...........................................................................(B & E tapers) ±10 % maximum ........... ±5 % maximum (all tapers)

(D, G, S & T tapers) ±20 % maximum

Insulation Resistance (500 VDC) ..........................................................100 megohms minimum ........................ 100 megohms minimum

IP Rating .....................................................................................................IP 40 ...................................................... IP 40

Mechanical Characteristics

Stop Strength

1/4 ” and 1/8 ” diameter shafts ......................................................................................................................................................... 45.19 N-cm (4 lb.-in.)

7/8 ” length shaft ................................................................................................................................................................................. 22.6 N-cm (2 lb.-in.)

Mechanical Angle ...................................................................................................................................................................................................... 300 ° ±5 °

Torque

Starting and Running Torque (Non-Locking Bushings)

Single Section ................................................................................................................................................................. 0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.)

Dual Section .................................................................................................................................................................... 0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.)

Triple Section ................................................................................................................................................................... 0.35 to 1.41 N-cm (0.5 to 2.0 oz.-in.)

Quadruple Section .......................................................................................................................................................... 0.35 to 1.41 N-cm (0.5 to 2.0 oz.-in.)

Starting and Running Torque (Locking Bushings) ..................................................................................................... 0.14 to 2.82 N-cm (0.2 to 4.0 oz.-in.)

Shaft Locking Torque with Locknut @ 10 in-lb. (B & E Bushings) ........................................................................................................ 14 N-cm (20 oz-in.)

Mounting ...................................................................................................................................................................1.7-2.0 N-m (15-18 lb.-in.) maximum

Weight (Single Section).............................................................................................................................................................................. 21 grams maximum

(Each Additional Section) ...................................................................................................................................................................... 6 grams maximum

Terminals .......................................................................................................................................................................... Printed circuit terminals or J-Hooks

Soldering Condition .................................................................. Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ” wire diameter.

Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean ﬂux.

Marking.......................................................................... Manufacturer’s trademark, wiring diagram, date code and resistance, manufacturer’s part number

Ganging (multiple section potentiometers) ..................................................................................................................................................... 4 cup maximum

Hardware ...........................................One lockwasher and one mounting nut is shipped with each potentiometer, except where noted in the part number.

For dimensional drawings see pages 3 & 4.

For ordering information see page 5.

NOTE: Model 81/82 performance speciﬁcations do not apply to units subjected to printed circuit board cleaning procedures.

1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications

81/82 - 5/8 ” Square Single-Turn Panel Control

85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch

Rotary Switch Speciﬁcations

Initial Electrical Characteristics

Contacts:

DPST ...............................................................................................................................................................................N.O/N.O.,N.C./N.C. or N.O./N.C.

DPDT ................................................................................................................................................................................2 N.O./N.C. (break before make)

Power Rating (Resistive Load):

DPST ............................................................................................................ 2 A @ 125 volts RMS-60 Hz or 2 A @ 28 VDC, 1 A @ 250 volts RMS-60 Hz

Contact Resistance (0.1 VDC-10 mA) ..................................................................................................................................................... 10 milliohms nominal

Contact Bounce ................................................................................................................................................................................ 5 milliseconds maximum

Dielectric Withstanding Voltage (MIL-STD-202, Method 301)

Sea Level ............................................................................................................................................................................................. 1500 VAC minimum

Insulation Resistance ....................................................................................................................................................................... 1000 megohms minimum

Environmental Characteristics

Operating Temperature Range ...........................................................................................................................................................................0 °C to +70 °C

Storage Temperature Range ........................................................................................................................................................................ -65 °C to +125 °C

Vibration (Dual Section) ....................................................................................................................................................................................................... 8 G

(Triple Section) .................................................................................................................................................................................................... 5 G

(Quadruple Section) ........................................................................................................................................................................................... 3 G

Contact Resistance ........................................................................................................................................................................ 10 milliohms maximum

Shock (Dual Section) ......................................................................................................................................................................................................... 20 G

Rotational Life ..................................................................................................................................................................................................... 25,000 cycles

Switch Actuating Torque (50% Duty cycle @ Rated Power Load) .................................................................................. 1.41 to 4.94 N-cm (2 to 7 oz.-in.)

Moisture Resistance (MIL-STD-202, Method 106, Condition B)

Contact Resistance (0.1 VDC-10 mA) ............................................................................................................................................ 10 milliohms maximum

Insulation Resistance (After 24 Hours @ Room Temperature) (500 VDC) .................................................................................... 100 megohms minimum

Switch Housing Material ................................................................................................................. High temperature, ﬂame retardant, thermosetting plastic

Mechanical Characteristics

Actuating Torque (Each Section, Switch Module Only) ....................................................................................................... 3.53 to 10.6 N-cm (5 to 15 oz.-in.)

Running Torque (Out of Detent, 2-4 Module Assembly)..................................................................................................... 0.21 to 1.41 N-cm (0.3 to 2 oz.-in.)

Detent ..................................................................................................................................................................................................... CW or CCW standard

Actuation Angle ...................................................................................................................................................................................................................25 °

Contact Materials ..........................................................................................................................................................................Fine silver with gold overlay

Terminal Styles .................................................................................................................................................................................................. Solder lug only

Standard Orientation ..............................................................................................................................................................In-line with control terminals

Optional .......................................................................................................................................................................... Rotated 90 ° CCW from standard

Terminal Strength (Before and After Soldering Heat Exposure) .......................................................................................................... 0.9 Kg (2 lbs.) minimum

NOTE: Model 81/82 performance speciﬁcations do not apply to units subjected to printed circuit board cleaning procedures.

1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications

推荐资源

用CD制作床头延迟灯

JSKJ型晶体管时间继电器电路（直流）

B2016A型龙门刨床电气原理图-电机放大机控制系统

自动问候电路

820e电脑主板电路图_32

电脑主板电路图 810 3_10

学模拟+《运放噪声优化》4 4.11离散噪声源构成的运放噪声模型: shiyongzhu 网友问我图4.11对应的噪声电压源和电流源，从那下载？我开始理解错了，刚才看了一下才知道。在TI官网上找到了，有点不太好找，为方便大家学习特此上传，希望有用，附图：149952 ......; lidonglei1 模拟与混合信号

Profibus现场总线技术在汽车制造业中的应用: 摘要：文章介绍了长安汽车制造厂总装车间自控系统的配置和功能，阐述了其系统网络结构特点——由计算机、PLC、现场IO模块组成多级的、开放的、模块化的、实时多任务的、集散型的、可扩展的数据 ......; frozenviolet 汽车电子

来料检验两个问题（PTC和晶振）: 来料检验两个问题（PTC和晶振） ...; QWE4562009 综合技术交流

单片机与TCP/IP网络(接口电路图详解(1)): ----89c52单片机部分http://www.laogu.com/MY/89c52.jpg——ISA接口的A,B部分.http://www.laogu.com/MY/isa_ab.jpg这是RTL8019网卡ISA的前半部分A1--A31(1...31),B1--B31(32...62)共62个引脚. ......; eeleader 工业自动化与控制

求基于44B0 裸机程序: 写了几天都没写出来，还是请教各位大虾吧基于44B0 的按键中断LED 裸机程序啊？发个给我好吗？谢谢了 249191508@qq.com ...; zhuwei883 嵌入式系统

示波器高压探头的问题: 【不懂就问】如图下，是一个示波器高压探头这个图的意思是不是表明，该探头的共模电压可以达到600-1000v（就是可以把600-1000v的电位当做地），然后在此基础上，两个探头间的电压峰值是1300 ......; shaorc 模拟电子

使用VS Code进行STM32单片机开发（创建工程、编译、调试）

官方STM32 for VS Code Extension 一、环境搭建 1．下载软件（1）VS Code V1.78.2 https://code.visualstudio.com （2）STM32CubeMX V1.12.1 https://www.st.com/en/development-tools/stm32cubemx.html （3）STM32CubeCLT V1.12.1 ...[详细]
硬盘录像机编码融入智能技术解析

DVR市场发展现状 DVR即数字视频录像机，相对于传统的模拟视频录像机，采用硬盘录像，故常常被称为硬盘录像机。它是一套进行图像存储处理的计算机系统，具有对图像/语音进行长时间录像、录音、远程监视和控制的功能。本文重点介绍DVR市场发展现状及未来发展趋势。 DVR市场发展现状伴随着DVR市场规模的扩大，市场的新进者不断增多，这使得DVR市场竞争异常激烈，产品同质化严重。现在随着高清智能摄像机的出...[详细]
“速度与激情“高清监控下双码流回放技术

今天的安防行业，已经进入所谓的大联网时代。许多企业特别是金融机构都已经建立了多级视频监控联网平台。利用遍布全国的网络，金融机构的总部可以随时调用各分支机构的监控录像。然而，在现实应用中，由于带宽的限制，许多企业在进行高清监控的情况下，就无法满足低网速下的远程调用需求。“速度与激情”在中国的安防行业似乎无法兼顾。鉴于这种情况，蓝色星际在国内率先推出了“双码流回放技术”，这种技术可实时导出高、低分辨...[详细]
整合芯片、软件及平台为一体的可穿戴式设计

For healthcare professionals, accurate diagnosis and treatment are crucial for a clear picture of a person's health. However, healthcare professionals often rely on tests at medical facilities, cli...[详细]
速腾聚创：ADAS激光雷达收入下降，但机器人业务扛起大旗

毛利率从去年上半年的13.6%跃升至25.9%，几乎同比翻倍。 8月21日，速腾聚创发布了中期业绩报告，其中毛利率的增长非常亮眼。财报显示，速腾聚创今年上半年收今年第二季度达到了27.7%。其中 ADAS 的毛利率为19.4%，机器人及其他为41.5%，毛利率已经连续第6个季度稳步上升。在电话会上，速腾聚创CEO邱纯潮在业绩会上透露，在L4全球领域的领先企业中，速腾聚创合作的...[详细]
2025人形机器人和智能汽车协同发展分析报告

核心观点：汽车产业链与人形机器人产业具备硬件、软件、场景多方面协同优势，汽车产业链上下游企业从本体、传感器、执行器、材料多个环节赋能人形机器人，助力人形机器人迎来量产落地。汽车产业链与人形机器人产业具备协同优势汽车产业链与人形机器人产业具备硬件协同优势。传感器方面，智能汽车的多传感器融合在机器人领域实现技术复用；芯片方面，车规级智驾芯片的强算力与低功耗特性为机器人提供AI 算力支持；...[详细]
消息称三星正为 2nm 尖端制程导入 Hyper Cell 技术

8 月 22 日消息，韩媒 Nate 当地时间 20 日报道称，三星电子正在向其当下最先进的 2nm 级制程工艺中导入 Hyper Cell 技术，力图以晶体管设计上的更大灵活性提升性能与能效表现，增强工艺在 AI / HPC 芯片代工市场的竞争力。单元 (Cell) 是半导体芯片设计中最基本的单位，而传统的标准单元具有相对固定的高度尺寸和排列方式（即所谓的 6T 库、7.5T 库）。三星的 ...[详细]
超拟人Eva上车，吉利要把汽车变成具身智能生命体！

2025年的汽车行业，正在迎来一场彻底的智能化洗牌。吉利在AI座舱领域想要做出变革：今后吉利的产品线中，将不存在不具备AI能力的传统智能座舱。这是一次“先破后立”。如何做到？吉利给出的答案是“全域AI”，并以此搭建了行业首个五层原生AI座舱架构。在这个架构中，硬件不再只是算力的堆砌，而是与大模型、情感计算、智能体生态深度融合，最终形成一个会思考、能理解、可陪伴的具身智能生命体。...[详细]
单片机开发过程中遇到的关于串口的若干问题

最近做了一个项目，涉及到了串口，本来以为像串口这种经常使用的通讯方式，开发起来应该是很简单的，不说易如反掌，至少也不应该在一个问题上卡壳太久。说到底还是自己经验不足，还得多多学习才是！该项目是使用CubeMX生成的初始化代码，在配置串口的时候我格外小心，该配置的都配置了，但是生成代码后烧到单片机中，却发现串口接收数据出现问题，只能接收到一次数据，后面无论如何都接收不到了。但是我已经在串口初...[详细]
纯电动汽车的小电瓶老亏电的原因是什么

纯电动汽车在结构上面来说，有着动力电池等部件，但对于车来说除了动力电池以外还有个小电瓶，小电瓶对于电动汽车来说，给车辆的一些低压电器元件进行供电，甚至是需要为车辆在启动的过程当中提供启动能量，在使用的时候我们会发现，小电瓶蓄电池会存在亏电的现象？对于小电瓶的亏电来说怎么回事？如何避免呢？小电瓶老是亏电和我们的使用有关，一般来说纯电动汽车的小电瓶以12V的电瓶为主，而这样的电压需要为车辆的低...[详细]
电动汽车以什么样的充电方式才是最合适的

电动汽车续航里程越来越长，普及率越来越高。电动汽车充电有两种方式慢充和快充,哪一种方式最合适呢？慢充，就是采用交流220V或三相380V（普通家用照明电源或动力电源）使用输出功率为5kW左右的充电器给电动汽车充电。快充就是利用充电桩进行直流充电，插头接电动汽车的直流充电口进行充电，根据充电桩的功率可达30KW~60KW。电动汽车是以电动机动力行驶的汽车，而车载蓄电池是为电动机提供电能的核心...[详细]
电动汽车的快充技术会对电池组造成损伤吗

随着汽车电动化时代的到来，纯电动车型的保有量也已经越来越多了，但同时也有很多车主对于如何正确的保养纯电动车型并不是特别了解。而且在使用过程当中，有些车友还认为现在纯电动车型基本都实现了快充功能，频繁的使用快充是否会对电池的寿命造成影响呢？首先，我们需要先对纯电动车型的电池做一个了解。目前电动汽车所搭载的电池普遍都是锂电池和铅酸电池，不同的电池发电的机理有所不同，而且对于快充的敏感度也存在很...[详细]
逆变器换向分类技巧，通过设备获得

根据换向技术，可控硅整流器主要分为两种主要类型。线路换向和强制换向逆变器被普遍使用，而其他换向逆变器，即辅助换向逆变器和互补换向逆变器不被普遍使用。这里简要讨论两种主要类型。逆变器换向分类方法 1.线路换向在这些类型的逆变器中，交流电路的线电压可以通过设备获得;当电流通过时，这个装置就关闭了教员公用室体验零特性。这种换向过程被称为线换向，而根据这种原理工作的逆变器被称为线换向逆变器。...[详细]
Power Integrations推出太阳能赛车专用参考设计，采用高效率氮化镓芯片

PowiGaN在轻载和满载时均实现95%高效率，满足关键的运行和安全功能需求澳大利亚达尔文及美国加州圣何塞， 2025年8月22日讯 –Power Integrations推出一款专为太阳能赛车量身定制的参考设计套件。与此同时，37支学生队伍已整装待发，将参加于8月24日开始的普利司通世界太阳能挑战赛，穿越澳洲内陆地区。该套件型号为RDK-85SLR，采用了PI™公司一款集成Po...[详细]
探索当今TWS耳机的混合设计配置及OEM面临的工程挑战

消费者对高端聆听体验的需求推动无线耳机市场近年来快速迭代。混合设计在每只耳机中采用两种驱动单元，以提升音质、功能和佩戴舒适度。随着原始设备制造商（OEM）力求超越消费者预期并在市场中保持竞争力，这类设计正日益普及。真无线立体声（TWS）耳机领域正加速采用混合设计。混合方案的兴起促使 TWS 耳机经历重大技术重构，不仅影响制造商的产品架构，更为消费者带来显著优化的声音体验。本文将概述当今 T...[详细]

器件捷径: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF EG EH EI EJ EK EL EM EN EO EP EQ ER ES ET EU EV EW EX EY EZ F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF FG FH FI FJ FK FL FM FN FO FP FQ FR FS FT FU FV FW FX FY FZ G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GB GC GD GE GF GG GH GI GJ GK GL GM GN GO GP GQ GR GS GT GU GV GW GX GZ H0 H1 H2 H3 H4 H5 H6 H7 H8 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ I1 I2 I3 I4 I5 I6 I7 IA IB IC ID IE IF IG IH II IK IL IM IN IO IP IQ IR IS IT IU IV IW IX J0 J1 J2 J6 J7 JA JB JC JD JE JF JG JH JJ JK JL JM JN JP JQ JR JS JT JV JW JX JZ K0 K1 K2 K3 K4 K5 K6 K7 K8 K9 KA KB KC KD KE KF KG KH KI KJ KK KL KM KN KO KP KQ KR KS KT KU KV KW KX KY KZ

热门器件

开源项目推荐更多

热门活动更多

热门文章更多

技术资料推荐更多