Non-RoHS models are currently
available, but not recommended
for new designs. See Product
Obsolescence Memo for details.
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 versions available*
81/82 - 5/8 ” Square Single-Turn Panel Control
85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
Potentiometer Specifications
1
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.........................................................................±±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) 0.ꢁ 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
1
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.....................................................................................................IP 40 ...................................................... IP 40
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.
1At 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.
Customers should verify actual device performance in their specific applications
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