Datasheet> 器件分类 > 无源元件> 电阻器> 81B3F-A28-G18/G18L

文档预览

81B3F-A28-G18/G18L: 产品描述Potentiometer, Conductive Plastic, 0.75W, 50000ohm, 20% +/-Tol, -1000,1000ppm/Cel,; 产品类别无源元件电阻器; 文件大小363KB，共6页; 制造商Bourns; 官网地址http://www.bourns.com; 标准

下载文档详细参数全文预览

81B3F-A28-G18/G18L概述

Potentiometer, Conductive Plastic, 0.75W, 50000ohm, 20% +/-Tol, -1000,1000ppm/Cel,

81B3F-A28-G18/G18L规格参数

参数名称	属性值
是否Rohs认证	符合
Objectid	770983191
Reach Compliance Code	not_compliant
Country Of Origin	Mexico
YTEOL	7.6
构造	Square
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	36.2 mm
额定功率耗散 (P)	0.75 W
电阻	50000 Ω
电阻器类型	POTENTIOMETER
旋转角	225 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

■

RoHS compliant versions available*

for “on-off” function control

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.

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

晶体管收音机中的OTL功率放大电路b

直流电动机的随动控制电路图

电子游戏定时炸弹电路

款符合工业遥控国标的锁相环（ＰＬＬ）二次变频无线收发头电路

电脑主板电路图 815 2_02

温度传感器电流变送电路

1M的晶振应该并联多大的电容啊？: 用的是CRB的1M的晶振，想做一个振荡电路，可是查了半天不知道应该并联多大的电容，这个应该怎么算呢？跪求各位指点一下！谢谢啊！~...; gxxdawn 分立器件

pcb布线问题！！: 为什么我布的电源线变了颜色，放大后看到线上有很多蓝色得小块在线上分布，是什么原因？ ...; 干就得了 PCB设计

一种准谐振逆变电流源: 49752...; czf0408 电源技术

求购周立功的ram2103开发板: 哪位朋友有闲置的，并且功能完好的请联系我 15067450793，qq'122253645...; ren364940161 ARM技术

基于52单片机占空比可调的方波发生器需要哪些零件: 希望各位帮帮忙...; 18200131157 51单片机

用usb下载nk.bin Don't support raw image的问题: 我移植了5.0bsp可是用usb下载nk.bin和nk.nb0的时候都提示是Don't support raw image 这个是什么原因呢我看到镜像是被下载到开发板上去的啊在论坛上也有人遇到同样的问题可是没答案有人 ......; FutureStar 嵌入式系统

“美国技术封锁”思考：云计算领域需要华云数据这样的创新标杆

　　数天来，中兴通讯遭美国商务部“封杀”的消息，引发了国内各产业领域对于缺乏自主核心技术及产品的普遍反思与担忧。在云计算领域，这件事同样也引发深思：云计算的概念属于舶来品，那么我国在云产业领域是否也缺乏自主核心技术和受制于人。下面就随网络通信小编一起来了解一下相关内容吧。　　事实上，经过多年来的发展，我国云计算产业已经有了自己的技术和品牌积淀，尤其是在国产化自主可控战略实施的大背...[详细]
“五道口守门员”王小川的漫长战事

　　“五道口守门员”王小川正在过自己前面所未经过的关卡。譬如搜狗(NYSE：SOGO)的财报，譬如人工智能，以及未来。下面就随嵌入式小编一起来了解一下相关内容吧。　　在搜狗昨晚刚发布的财报中，搜狗2018年第一季度营收2.48亿美元，同比增长53%，净利润1960万美元，同比增长56%，营收与利润均超50%，超出此前预期。　　依托以“语言”为核心的AI战略，今年3月，搜狗发布了搭载业内最前...[详细]
人工智能芯片创新企业榜发布恩智浦位列全球前三

中国上海，2018年4月26日讯—根据信息科技及通讯领域市场调研咨询公司Compass Intelligence(CompassIntel.com)近日发布的调研结果，恩智浦半导体（纳斯达克代码：NXPI）被评为全球前三位人工智能(AI)芯片企业之一。此次评选榜单涵盖了全球范围内在移动设备、物联网(IoT)和新兴技术方面最领先的企业。恩智浦与NVIDIA和Intel一同名列引领AI创新的AI芯...[详细]
AI手机大战正酣，芯片江湖裂变，谁是真正赢家？

智能手机走向各方，是无限循环的硬件性能大赛，还是眼花缭乱的新奇概念，真假美猴王，哪个才是真正的齐天大圣? 联想刚推出了一款区块链手机，炒作意义大于实际价值，不仅没有震惊世界，反而让人们丢失了对联想品牌的尊重。在世界的另一维，AI手机已经大放异彩，华为家族的华为Mate10系列、荣耀V10等新一代旗舰大获成功，苹果的iPhone x虽丑也销量可观，三星则聚焦在软件端AI产品。 AI手...[详细]
电动汽车充电设备解决方案

ADI 在高精度信号测量和控制方面处于业界领先地位，致力于以极具成本竞争力的高质量 IC 实现可靠的计量、测量、监控和控制，其产品广泛用于再生能源、输配电以及水、电、气计量应用。ADI 公司凭借在优化系统级信号处理性能方面的成熟经验和种类丰富的产品，为开发人员提供精密、可靠、易于设计的能源管理解决方案。电动汽车充电设备解决方案主要面对的挑战和系统考虑如何降低 $/W 系统成本...[详细]
不经历风雨怎么见彩虹_吉利集团控股丹麦盛宝银行

这个世界会变的，从来都没停过。刚刚过去的这一周是进入2018年以来最热闹的一周。大众管理层完成了权杖的易主，新规划的事业板块当中，“中国区”独立存在，与其并列的是业务模块而非区域市场。吉利又一次在北欧扩大版图，但这一次与汽车业务无关，他们收购了丹麦线上交易商盛宝银行51.5%的股份，实现了对后者的控股。奇瑞发布了集团新战略，包含自动驾驶、车联网、数字营销、移动出行、智能制...[详细]
博世斥资1.2亿美元在墨西哥建电控单元智能工厂

据外媒报道，博世计划斥资1亿欧元（约合1.2亿美元），在墨西哥中部塞拉亚（Celaya, central Mexico）建造一座智能工厂，旨在为北美汽车市场生产电控单元（ECU）。该工厂的规划面积为2.1万平米，预计将成为智能工业或工业4.0的典型范例。据估计，该工厂将于2020年建成，将新增1200个岗位。博世理事会会员Stefan Hartung在声明中宣称：“博世致力于在墨西哥发展业务...[详细]
让盲人也能“看清”世界，浙大研发“视觉辅助眼镜”

据浙江大学微信公众号消息，浙大一科研团队正在研发一款适合盲人、视障病人佩戴的眼镜。戴上它之后就能感知到身边的桌子椅、红绿灯、来往的车辆。科技的进步也为盲人带来了希望，比如盲人手机、盲人阅读软件等专用设备越来越多的出现。而据浙江大学微信公众号消息，浙大一科研团队正在研发一款适合盲人、视障病人佩戴的眼镜。戴上它之后就能感知到身边的桌子椅、红绿灯、来往的车辆。据悉，这幅眼镜是国内第一款适用于盲人的...[详细]
阿里加快布局芯片产业不能一蹴而就但要尽快开始

　　阿里巴巴集团4月20日宣布，全资收购中国大陆唯一的自主嵌入式CPU IP Core(知识产权核)公司中天微系统有限公司，收购金额未透露。阿里巴巴CTO张建锋表示，收购中天微系统是阿里巴巴芯片布局的重要一环。IP Core是基础芯片能力的核心，进入IP Core领域是中国芯片实现“自主可控”的基础。下面就随嵌入式小编一起来了解一下相关内容吧。　　点评：有数据统计，20...[详细]
黑莓KEYTwo即将发布或将采用骁龙660升级双摄

小编对于去年TCL带来的黑莓KEYOne印象还是比较深刻的，依然执着于全键盘的手机品牌已经不多见了。KEYOne可以说重新赋予了黑莓新的活力，让智能配置和全物理键盘进行了很好的结合。在今年，TCL依然蓄势待发，全新旗舰KEYTwo很快就要发布了，黑莓的粉丝们可以期待一下了。黑莓KEYOne作为一款性能均衡续航持久的商务机，在发布后得到了不少用户的喜爱，不过在目前以骁龙660普遍被采用...[详细]
集成高通多核AIE，小米6X支持出色AI应用体验

昨日，武汉大学珞珈山下，小米6X与大家正式见面。搭载骁龙660移动平台，集成Qualcomm多核人工智能引擎（AIE）的小米6X，在用户最关注的美颜拍照、面部解锁等方面带来了不俗表现。此外，这部手机特别针对“王者荣耀满血版”优化，畅享高帧率游戏体验；搭配AI多重省电技术，可持久续航一整天。骁龙660中的Qualcomm AIE集成硬件与软件组件，利用多核异构计算核心——Hexagon向...[详细]
高仙机器人发布新一代无人驾驶洗地机

4月26日，高仙机器人联合新加坡综合技术委员会(JTC)，发布新一代无人驾驶洗地机。这是高仙历经五轮迭代的产品，将搭载更加小巧灵敏的性能，以及更人性化的全语音交互。高仙机器人成立于2013年，专注于SLAM机器人运动交互技术的研发，探索并推动基于SLAM的低速无人驾驶和机器人商用化进程。过去5年来，这家位于中国上海的机器人制造企业作为底层技术商，向下游近百家智能机器人终端企业提供完整的机器人...[详细]
面对禁“芯”：中国热身十几年该上战场了

　　日前，美国商务部宣布，禁止该国企业在今后7年内，向中国通信设备商中兴通讯出售任何电子技术或通信元器件，引起各方的强烈关注。这绝不是一起孤立事件，也不仅仅是一家企业的问题，而是国与国之间的较量。中兴通讯发表官方声明称：在相关调查尚未结束之前，美方执意对其施以最严厉的制裁，极不公平，不能接受!我国商务部强调：希望美方不要自作聪明，否则只会自食其果。中方坚决捍卫国家和人民利益的决心和信心不会有丝毫...[详细]
10亿欧元！博世集团在德国投建300mm芯片产线

　　德国博世集团最先进的芯片工厂4月24日在德国东部城市Dresden举办奠基仪式，博世集团将在该城市投资10亿欧元新建一条基于 300mm 硅晶片全自动产线，总建筑面积10万平米，将提供700个工作岗位。该厂今年3月已动工，预计2021年底正式投产。下面就随嵌入式小编一起来了解一下相关内容吧。　　博世集团汽车电子领域董事成员Jens Fabrowsky先生在奠基仪式上表示：“芯...[详细]
中国人工智能芯片市场分析和展望

　　技术的进步是历次工业革命的驱动力，而人类社会正在人工智能技术的进步下进入智能化社会，即所谓的“第三次工业革命”。而作为人工智能核心技术之一的人工智能芯片，其发展状况如何，未来的走向又是如何，这是本文希望共同探讨的话题。下面就随网络通信小编一起来了解一下相关内容吧。　　人工智能发展的历史和驱动因素　　Donella H. Meadows在她的《系统之美》一书中指出，“面...[详细]

器件捷径: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

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