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Bourns
Bourns


91A1AB28E22

Square Single-Turn Panel Control


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91A1AB28E22 pdf
Features
Available in a variety of pin-out
configurations
Virtually infinite electrical circuit isolation
Model 96 sealed for board wash
Metal or plastic shaft options
DPST and DPDT switch options
RoHS compliant versions available*
91, 92, 93, 94, 95, 96 - 5/8 ” Square Single-Turn Panel Control
97, 99 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
Potentiometer Specifications
Initial Electrical Characteristics1
Conductive Plastic Element
Cermet Element
Standard Resistance Range
www.DataShLeineet4aUr T.caopmers (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 Characteristics1
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.



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91A1AB28E22 pdf
91, 92, 93, 94, 95, 96 - 5/8 ” Square Single-Turn Panel Control
97, 99 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
Potentiometer Specifications
Mechanical Characteristics1
Stop Strength (1/4 ” D shaft)......................................................................................................................................................................45.19 N-cm (4 lb.-in.)
www.DataShMeeetc4hUa.nciocaml
(1/8 ” D shaft) ....................................................................................................................................................................33.89 N-cm (3 lb.-in.)
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, Plastic Bushing) ......................................................................................................................................................7.3 grams nominal
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: ALL MODEL 90 PERFORMANCE SPECIFICATIONS DO NOT APPLY TO UNITS SUBJECTED TO PRINTED CIRCUIT BOARD CLEANING PROCEDURES, EXCEPT FOR THE SEALED
VERSION (MODEL 96).
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.



Part Number 91A1AB28E22
Description Square Single-Turn Panel Control
Maker Bourns - Bourns
Total Page 6 Pages
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