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91A1A-G28-T22: 产品描述Potentiometer, Conductive Plastic, 0.25W, 250000ohm, 10% +/-Tol, -1000,1000ppm/Cel, 6350,; 产品类别无源元件电阻器; 文件大小337KB，共5页; 制造商Bourns; 官网地址http://www.bourns.com

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91A1A-G28-T22概述

Potentiometer, Conductive Plastic, 0.25W, 250000ohm, 10% +/-Tol, -1000,1000ppm/Cel, 6350,

91A1A-G28-T22规格参数

参数名称	属性值
是否Rohs认证	不符合
Objectid	700034648
Reach Compliance Code	unknown
构造	Single Turn
引线长度	15.29 mm
最高工作温度	125 °C
最低工作温度	-40 °C
封装高度	17.45 mm
封装长度	15.88 mm
封装形式	PCB Mount
封装宽度	12.7 mm
额定功率耗散 (P)	0.25 W
电阻	250000 Ω
电阻器类型	POTENTIOMETER
旋转角	225 deg
系列	91
尺寸代码	6350
技术	CONDUCTIVE PLASTIC
温度系数	1000 ppm/°C
容差	10%

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Features

■

Available in a variety of pin-out

conﬁgurations

■

Virtually inﬁnite electrical circuit isolation

■

Metal or plastic shaft options

■

RoHS compliant versions available*

Non-RoHS models are currently

available, but not recommended

for new designs. See

Product

Obsolescence Memo

for details.

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

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 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.

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

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.

91A1A-G28-T22

91A1A-G28-T22概述

91A1A-G28-T22规格参数

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