EEWORLDEEWORLDEEWORLD

Part Number

Search

85A4K-B20-G23/R55L

Description
Potentiometer, Conductive Plastic, 1W, 500000ohm, 20% +/-Tol, -1000,1000ppm/Cel,
CategoryPassive components    The resistor   
File Size363KB,6 Pages
ManufacturerBourns
Websitehttp://www.bourns.com
Environmental Compliance
Download Datasheet Parametric View All

85A4K-B20-G23/R55L Overview

Potentiometer, Conductive Plastic, 1W, 500000ohm, 20% +/-Tol, -1000,1000ppm/Cel,

85A4K-B20-G23/R55L Parametric

Parameter NameAttribute value
JESD-609 codee3
Resistor typePOTENTIOMETER
technologyCONDUCTIVE PLASTIC
Temperature Coefficient1000 ppm/°C
Tolerance20%
Installation featuresPANEL MOUNT
Package formPanel Mount
Rated power dissipation(P)1 W
resistance500000 Ω
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Package height18.42 mm
Package length15.88 mm
Package width55.89 mm
surface mountNO
Is it Rohs certified?Yes
Is SamacsysN
YTEOL0
Objectid778143021
Reach Compliance Codenot_compliant
Terminal surfaceMatte Tin (Sn)
structureSquare
Number of terminals16
rotation angle225 deg
*R
oH
VE S CO
AV R M
AI SIO PL
LA N IA
BL S NT
E
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
1
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
1
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
DSP Learning Series (2)
I feel it is very good to have a test box for learning. I wanted to learn DSP when I was a junior , but I couldn't understand a few books I borrowed from the library. Now I have a test box, I can debu...
gyfu DSP and ARM Processors
This LED is kind of cool - TI CC2538 released!
[font=微软雅黑]Use the mobile phone application software to control the brightness and color of the LED. The chip on the LED uses CC2530, and the gateway uses the more powerful CC2538. First, the picture ...
soso LED Zone
Development Trend of Arbitrary Waveform Generator
Arbitrary waveform generator was successfully developed in 1975, and since then, a new type of signal generator has been added. Before arbitrary waveform generators entered the market as signal excita...
逍遥 Test/Measurement
The .sof file appears to be downloaded successfully, but it is not actually downloaded
I am using Quartus II 11.1, and the FPGA is Cyclone II. After the .sof file is successfully downloaded, I enter Nios II Eclipse and select the .sopcinfo file, and a timestamp mismatch error appears. P...
756413962 FPGA/CPLD
Hidden links in this article
How to set up hidden links? My website: [url=http://www.zxpcb.net]http://www.zxpcb.net[/url] Because I reprinted someone else's article, but there is a hidden link in it, which prawn can tell me how t...
huahuikai Embedded System
C language FAQ
[i=s]This post was last edited by paulhyde on 2014-9-15 09:19[/i] This article is translated from the English C-FAQ (revised on July 3, 2004). The Chinese copyright of this article is owned by Zhu Qun...
281229961 Electronics Design Contest

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2713  1609  1239  1368  1109  55  33  25  28  23 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号