Datasheet> 器件分类 > 无源元件> 电阻器> 91R2A-R22-B12/B12

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91R2A-R22-B12/B12: 产品描述Potentiometer, Conductive Plastic, 1W, 2500ohm, 20% +/-Tol, -1000,1000ppm/Cel, 6390; 产品类别无源元件电阻器; 文件大小222KB，共5页; 制造商Bourns; 官网地址http://www.bourns.com

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91R2A-R22-B12/B12概述

Potentiometer, Conductive Plastic, 1W, 2500ohm, 20% +/-Tol, -1000,1000ppm/Cel, 6390

91R2A-R22-B12/B12规格参数

参数名称	属性值
是否Rohs认证	不符合
厂商名称	Bourns
Reach Compliance Code	unknown

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Features

■

Features one-piece molded plastic shaft

and rotor assembly

Available in a variety of pin-out

configurations

Virtually infinite electrical circuit isolation

■

Model 96 sealed for board wash

Metal shaft available as special feature

RoHS compliant versions available*

91, 92, 93, 94, 95, 96, 99 - 5/8 ” Square Single-Turn Panel Control

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-303, 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 (Model 96) ...............................................................................IP 65 ...............................................................IP 65

(All Others)..........................................................................................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.

91, 92, 93, 94, 95, 96, 99 - 5/8 ” Square Single-Turn Panel Control

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 ,D & 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 ............................................................................................................................................(Metal Bushing) 1.7-2.0 N-m (15-18 lb.-in.) maximum

Plastic Bushing) 56-79 N-cm (5-7 lb.-in.) maximum

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

Weight (Single Section) ..................................................................................................................................................................................7 grams maximum

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

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: ALL MODEL 90 PERFORMANCE SPECIFICATIONS DO NOT APPLY TO UNITS SUBJECTED TO PRINTED CIRCUIT BOARD CLEANING PROCEDURES, EXCEPT FOR THE SEALED

VERSION (MODEL 96).

AT 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.

91, 92, 93, 94, 95, 96, 99 - 5/8 ” Square Single-Turn Panel Control

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 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.)

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: Model 99 performance specifications do not apply to units subjected to printed circuit board cleaning procedures.

At 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.

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