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99A2D-B28-G23/R71: 产品描述Potentiometer, Conductive Plastic, 0.25W, 500000ohm, 20% +/-Tol, -1000,1000ppm/Cel, 6398,; 产品类别无源元件电阻器; 文件大小340KB，共7页; 制造商Bourns; 官网地址http://www.bourns.com

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99A2D-B28-G23/R71概述

Potentiometer, Conductive Plastic, 0.25W, 500000ohm, 20% +/-Tol, -1000,1000ppm/Cel, 6398,

99A2D-B28-G23/R71规格参数

参数名称	属性值
是否Rohs认证	不符合
Objectid	772719244
Reach Compliance Code	unknown
构造	Rotary
最高工作温度	125 °C
最低工作温度	-40 °C
封装高度	18.42 mm
封装长度	15.88 mm
封装形式	Panel Mount
封装宽度	24.77 mm
额定功率耗散 (P)	0.25 W
电阻	500000 Ω
电阻器类型	POTENTIOMETER
旋转角	225 deg
系列	99
尺寸代码	6398
技术	CONDUCTIVE PLASTIC
温度系数	1000 ppm/°C
容差	20%

99A2D-B28-G23/R71文档预览

VE S C O

AV R M

AI SIO PL

LA N IA

BL S NT

Features

■

Virtually inﬁnite electrical circuit isolation

■

Metal or plastic shaft options

■

DPST and DPDT switch options

■

RoHS compliant versions available*

Model 97 & 99

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 ...............................10 % or 20 % .................................................... 5% or 10%

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 (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 tapers) 10 ohms or ±15 % TRS max. ......(All tapers) ±5 % TRS max.

(whichever is greater)

(Audio tapers) ±20 % maximum

Contact Resistance Variation

@ 50,000 cycles ........................................... (Linear tapers) ±2 %.............................................±2 %

(Audio tapers) ±3 % .............................................±3 %

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

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

(Audio tapers) ±20 % TRS maximum

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

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

*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.

Model 97 & 99

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

Potentiometer Speciﬁcations

Mechanical Characteristics

Stop Strength (1/4 ” D shaft) .............................................................................................................................................45.19 N-cm (4 lb.-in.)

(1/8 ” D shaft) .............................................................................................................................................33.89 N-cm (3 lb.-in.)

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

Torque

Starting ........................................................................................................................................... 0.3 max. above average running torque

Running Torque

Single or Dual Section (A & R Bushings) .................................................................................................. 0.21 to 1.06 N-cm (0.3 to 1.5 oz.-in.)

Single or Dual Section (C & U Bushings) .................................................................................................. 0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.)

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

Variation ...................................................................................................................... 0.35 N-cm (0.5 oz.-in.) maximum in 45 ° shaft travel

Weight (Single Section, Metal Bushing)...............................................................................................................................12.7 grams nominal

(Each Additional Section) ....................................................................................................................................................4 grams nominal

Terminals .................................................................................................................................Printed circuit terminals, J-Hooks or solder lugs

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, date code, resistance, manufacturer’s part number

Ganging (Multiple Section Potentiometers).............................................................................................................................2 cups maximum

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

NOTE:

Performance speciﬁcations do not apply to units subjected to printed circuit board cleaning procedures.

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.

Model 97 & 99

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

DPDT .....................................................................................................................................1 A @ 125 volts RMS-60 Hz or 1 A @ 28 VDC

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

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

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

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

Contact Bounce ................................................................................................................................................... 0.1 millisecond maximum

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

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

Contact Bounce ................................................................................................................................................... 0.1 millisecond maximum

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.)

Contact Resistance ................................................................................................................................................ 100 milliohms maximum

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

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

Mechanical Characteristics

Actuating Torque (Each Section, Switch Module Only).............................................................................. 3.53 to 10.59 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 ......................................................................................................................................................................................20 ° ±5 °

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:

Performance speciﬁcations do not apply to units subjected to printed circuit board cleaning procedures.

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.

Model 97 & 99

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

Product Dimensions

Model 97 PC Pin Terminals, “L” Pattern

MOUNTING

SURFACE

12.70 ± .229

(.500 ± .009)

0.79 ± .025

(.031 ± .010)

DIA.

13.72 ± 0.38

(.540 ± .015)

1.37 ± 0.08

(.054 ± .003)

2.36 ± 0.08

(.093 ± .003)

15.88

(.625)

7.92

(.312)

SEE

HOW TO ORDER

CHART FOR

BUSHING OPTIONS.

DIA.

0.81

TYP.

(.032)

5.08 ± 0.38

(.200 ± .015)

11.05 ± 0.20

(.435 ± .008)

1.19

(.047)

“A” STYLE

A.R. LUG

9.53

(.375)

12.7 ± 1.02

(.500 ± .040)

2.54

(.100)

2.54

(.100)

0.76 ± 0.05

(.030 ± .002)

TYP.

SEE

FOR SHAFT

OPTIONS.

Model 99 Solder Lug Terminals, "Triangular" Pattern

5.08 ± 1.02

(.200 ± .040)

5.59 ± .20

(.220 ± .008)

4.45 ± .38

(.175 ± .015)

2.54

(.100)

2.54

(.100)

2.03

(.080)

3 PLCS.

.41

(.016)

2.29

1.02

(.040) WIDE X (.090) LONG

3 PLCS.

.381

TOLERANCES EXCEPT AS SHOWN: DECIMAL .XXX ± (.015 )FRACTION ± 1/64

9.65

.XX ±

ANGLE ±5 °

(.38)

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

Model 97 & 99

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

Product Dimensions

Model 97

(2nd Cup - Switch)

MOUNTING

SURFACE

2.77 ± .38

(.109 ± .015)

15.88

(.625)

REF.

Horizontal Term.

(Switch Types R57, R59, R61, R73)

18.42 ± 0.38

(.725 ± .015)

15.88

(.625)

16.89 ± .51

(.665 ± .020)

8.74 ± 0.25

(.344 ± .010)

2.54

(.100)

4 5

2.41 X 1.14 SLOT 6 PLCS

(.095 ± .045)

2.29

6 PLCS.

(.090)

2.54 ± 0.25

2 PLCS.

(.100 ± .010)

6 2

15.88 ± 0.38

(.625 ± .015)

2 PLCS.

2.77 ± .38

(.109 ± .015)

8.26 ± 0.25

(.325 ± .010)

Model 99

(2nd Cup - Switch)

MOUNTING

SURFACE

2.77 ± .38

(.109 ± .015)

24.77 ± .51

(.975 ± .020)

15.88

(.625)

REF.

Switch Module Variations

Shaft Flat Orientation

120 ° ± 5 ° STD.

FLAT ORIENTATION

(SHAFT AT CCW END)

CCW

POTENTIOMETER

TOTAL ROTATION 300 °

5.59 ± .38

(.022 ± .015)

16.89 ± .51

(.665 ± .020)

2.41 X 1.14

SLOT 6 PLCS

(.095 ± .045)

CCW DETENT

25 ° MAX.

ACTUATION

ANGLE

(TYPES 51,

53, 55, 57, 59,

61, 71, 73)

CW DETENT

25 ° MAX.

ACTUATION ANGLE

(TYPES 50, 52, 54,

56, 58, 60, 70, 72)

4 5

NOTE: Switch terminals shown in vertical position.

DPST (NC/NC)

(TYPES 54, 55, 60, 61)

DPST (NO/NO)

(TYPES 52, 53, 58, 59)

DPDT (NC/NC)

(TYPES 70, 71, 72, 73)

2.29

6 PLCS.

(.090)

DPST (NO/NC)

(TYPES 50, 51, 56, 57)

Switch contacts shown in detent position.

4.45 ± .38

(.175 ± .015)

2.77 ± .38

(.109 ± .015)

.381

TOLERANCES EXCEPT AS SHOWN: DECIMAL .XXX ± (.015 )FRACTION ± 1/64

9.65

.XX ±

ANGLE ±5 °

(.38)

DIMENSIONS:

(INCHES)

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

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中国移动加速TD-LTE网络测试 4G大战或将开启

天气热，中国移动的心更热，最近一段时间，中国移动在TD-LTE上举措频频。继在杭州、深圳等多个城市建成了TD-LTE试验网并启动了免费体验活动，之后，中移动又在加速推进北京的TD-LTE试验网进程，并开展用户体验服务。在上海，中移动透露TD-LTE将于明年上半年在内环线进行试点商用。不过另外两家竞争对手在LTE也并非无所作为，电信展示了自己的“蓝极光”计划，联通在上海建LTE试验网。在这场4...[详细]
超声波测距系统的设计

　　0 引言　　超声波是一种频率在20KHz以上的机械波，在空气中的传播速度约为340 m／s(20°C时)。超声波可由超声波传感器产生，常用的超声波传感器两大类：一类是采用电气方式产生超声波，一类是用机械方式产生超声波，目前较为常用的是压电式超声波传感器。由于超声波具有易于定向发射，方向性好，强度好控制，对色彩、光照度不敏感，反射率高等特点，因此被广泛应用于无损探伤，距离测量、距...[详细]
短波发射机智能控制系统的设计与实现

0 引言为了改进短波发射机的自动化控制，从远到近都能自动进程，在这里技术人员采用了ICS系统来完成该设计。智能控制系统(Intelligent Control System，ICS)采用信息技术、计算机技术、控制技术等手段对传统发射机运行控制系统进行改造，以达到增强系统运行效率、提高系统智能性和快速性、增加中央控制能力等目的。 ICS总体来说包括四部分：终端信息接收、频率调度控制...[详细]
麻萨诸塞大学的研究人员打算使用传感器来预测不健康行为

自 2004 年以后的每一年，麻萨诸塞州系统大学的校长拥有一个用来资助科学和技术研究项目的自主基金。今年， Robert L. Caret校长将高达 75 万美元的资金资助给科学和技术创新项目，其中包括两年内投入 18.5 万美元以支持基于移动医疗的传感器和干预项目研究。　　“我们很高兴他优先考虑了这种行为科学和计算机科学之间的合作项目”，资助的合作接受人、位于伍斯特的麻萨诸塞大学医...[详细]
全球首款LTEMobile Wi-Fi诞生华为E5776在日本上市

全球领先的信息与通信解决方案供应商华为今日宣布，继LTE/HSPA+/UMTS多频多模MobileWi-Fi(移动Wi-Fi热点)终端设备 —— 华为 E589 大获成功之后，日本电信运营商Emobile 再度联手华为推出全球首款 LTE Category 4 多模 Mobile Wi-Fi 产品 E5776 ( Emobile 名称 GL04P, 下同)，该款产品是目前全球 LTE网络下载速...[详细]

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