Features
■ Metal shaft and bushing
■ Consistent, smooth quality feel
■ Up to 4 sections available
■ Rotary switch option designed
for “on-off” function control
■ RoHS compliant*
81/82 - 5/8 ” Square Single-Turn Panel Control
85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
Potentiometer Specifications
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Initial Electrical Characteristics
Standard Resistance Range
Conductive Plastic Element
Cermet Element
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.........................................................................±±0 ꢀ or 10 ꢀ...................................... ±10 ꢀ or ꢁ ꢀ
Independent Linearity.................................................................................±ꢁ ꢀ...................................................... ±ꢁ ꢀ
Absolute Minimum Resistance...................................................................± ohms maximum.................................. ± ohms maximum
Effective Electrical Angle............................................................................(Linear tapers) ±40 ° ± ꢁ °...................... (Linear tapers) ±40 ° ± ꢂ °
(Audio tapers) ±±ꢁ ° ± ꢁ °...................... (Audio tapers) ±±ꢁ ° ± ꢂ °
Contact Resistance Variation .....................................................................±1 ꢀ...................................................... ±1 ꢀ or ꢃ ohms (ꢄhichever is greater)
Dielectric Withstanding Voltage (MIL-STD-±0±, Method ꢃ01)
Sea Level..............................................................................................1,ꢁ00 VAC minimum.............................. 1,ꢁ00 VAC minimum
70,000 Feet ..........................................................................................ꢁ00 VAC minimum................................. ꢁ00 VAC minimum
Insulation Resistance (ꢁ00 VDC) ................................................................1,000 megohms minimum..................... 1,000 megohms minimum
Poꢄer Rating At 70 °C (Voltage Limited By Poꢄer Dissipation or ꢃꢁ0 VAC, Whichever Is Less)
+70 °C Single Section Assembly .........................................................(Linear tapers) 1 ꢄatt............................. (Linear tapers) ± ꢄatts
(Audio tapers) 0.ꢁ ꢄatt .......................... (Audio tapers) 1 ꢄatt
+70 °C Multiple Section Assembly.......................................................(Linear tapers) 0.ꢁ ꢄatt/section............. (Linear tapers) 1 ꢄatt/section
(Audio tapers) 0.±ꢁ ꢄatt/section ........... (Audio tapers) 0.ꢁ ꢄatt/section
+1±ꢁ °C................................................................................................0 ꢄatt..................................................... 0 ꢄatt
Theoretical Resolution................................................................................Essentially infinite.................................. Essentially infinite
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Environmental Characteristics
Operating Temperature Range ...................................................................-40 °C to +1±ꢁ °C.................................. -40 °C to +1±ꢁ °C
Storage Temperature Range ......................................................................-ꢁꢁ °C to +1±ꢁ °C.................................. -ꢁꢁ °C to +1±ꢁ °C
Temperature Coefficient Over Storage Temperature Range ......................±1,000 ppm/°C...................................... ±1ꢁ0 ppm/°C
Vibration (Single Section) ...........................................................................1ꢁ G....................................................... 1ꢁ G
Total Resistance Shift...........................................................................±± ꢀ maximum..................................... ±± ꢀ maximum
Voltage Ratio Shift................................................................................±ꢁ ꢀ maximum..................................... ±ꢁ ꢀ maximum
Shock (Single Section) ...............................................................................ꢃ0 G....................................................... ꢃ0 G
Total Resistance Shift...........................................................................±± ꢀ maximum..................................... ±± ꢀ maximum
Voltage Ratio Shift................................................................................±ꢁ ꢀ maximum..................................... ±ꢁ ꢀ maximum
Load Life.....................................................................................................1,000 hours ........................................... 1,000 hours
Total Resistance Shift...........................................................................±10 ꢀ maximum................................... ±ꢁ ꢀ maximum
Rotational Life (No Load)............................................................................100,000 cycles ...................................... 100,000 cycles
Total Resistance Shift...........................................................................(Linear taper) 10 ohms or ..................... (All tapers) ±ꢁ ꢀ TRS maximum
±10 ꢀ TRS max. (ꢄhichever is greater)
(Audio taper) ±±0 ꢀ maximum
Contact Resistance Variation @ ꢁ0,000 cycles
(Audio taper) ..................................................................................±ꢃ ꢀ...................................................... ±ꢃ ꢀ
(Linear taper) .................................................................................±± ꢀ...................................................... ±± ꢀ
Moisture Resistance (MIL-STD-±0±, Method 10ꢃ, Condition B)
Total Resistance Shift...........................................................................(B & E tapers) ±10 ꢀ maximum ........... ±ꢁ ꢀ maximum (all tapers)
(D, G, S & T tapers) ±±0 ꢀ maximum
Insulation Resistance (ꢁ00 VDC)..........................................................100 megohms minimum........................ 100 megohms minimum
IP Rating.....................................................................................................IP40 ....................................................... IP40
Mechanical Characteristics
Stop Strength
1/4 ” and 1/8 ” diameter shafts......................................................................................................................................................... 4ꢁ.19 N-cm (4 lb.-in.)
7/8 ” length shaft................................................................................................................................................................................. ±±.ꢂ N-cm (± lb.-in.)
Mechanical Angle...................................................................................................................................................................................................... ꢃ00 ° ±ꢁ °
Torque
Starting and Running Torque (Non-Locking Bushings)
Single Section .................................................................................................................................................................0.14 to 1.0ꢂ N-cm (0.± to 1.ꢁ oz.-in.)
Dual Section....................................................................................................................................................................0.14 to 1.0ꢂ N-cm (0.± to 1.ꢁ oz.-in.)
Triple Section...................................................................................................................................................................0.ꢃꢁ to 1.41 N-cm (0.ꢁ to ±.0 oz.-in.)
Quadruple Section ..........................................................................................................................................................0.ꢃꢁ to 1.41 N-cm (0.ꢁ to ±.0 oz.-in.)
Starting and Running Torque (Locking Bushings).....................................................................................................0.14 to ±.8± N-cm (0.± to 4.0 oz.-in.)
Shaft Locking Torque ꢄith Locknut @ 10 in-lb. (B & E Bushings)........................................................................................................ 14 N-cm (±0 oz-in.)
Mounting...................................................................................................................................................................1.7-±.0 N-m (1ꢁ-18 lb.-in.) maximum
Weight (Single Section).............................................................................................................................................................................. ±1 grams maximum
(Each Additional Section)...................................................................................................................................................................... ꢂ grams maximum
Terminals .......................................................................................................................................................................... Printed circuit terminals or J-Hooks
Soldering Condition ..................................................................Recommended hand soldering using Sn9ꢁ/Agꢁ no clean solder, 0.0±ꢁ ” ꢄire diameter.
Maximum temperature ꢃ99 °C (7ꢁ0 °F) for ꢃ seconds. No ꢄash process to be used ꢄith no clean flux.
Marking..........................................................................Manufacturer’s trademark, ꢄiring diagram, date code and resistance, manufacturer’s part number
Ganging (multiple section potentiometers) ..................................................................................................................................................... 4 cup maximum
Hardꢄare...........................................One lockꢄasher and one mounting nut is shipped ꢄith each potentiometer, except ꢄhere noted in the part number.
For dimensional draꢄings see pages ꢃ & 4.
For ordering information see page ꢁ.
NOTE: Model 81/8± performance specifications do not apply to units subjected to printed circuit board cleaning procedures.
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At room ambient: +±ꢁ °C nominal and ꢁ0 ꢀ relative humidity nominal, except as noted.
*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.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.