Features
■ Available in a variety of pin-out
configurations
■ Virtually infinite electrical circuit isolation
■ Metal or plastic shaft options
■ RoHS compliant*
Model 91, 92, 93, 94 & 95 - 5/8 ” Square Single-Turn Panel Control
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...............................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 ° ꢀ °
(Audio tapers) 225 ° 5 °.................................. (Audio tapers) 225 ° ꢀ °
Contact Resistance Variation ........................... 1 %.................................................................. 1 % or ꢁ ohms (ꢂhichever is greater)
Dielectric Withstanding Voltage (MIL-STD-202, Method ꢁ01)
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
Poꢂer Rating (Voltage Limited By Poꢂer Dissipation or ꢁ50 VAC, Whichever Is Less)
+70 °C Single Section Assembly................(Linear tapers) 1 ꢂatt......................................... (Linear tapers) 2 ꢂatts
(Audio tapers) 0.5 ꢂatt ...................................... (Audio tapers) 1 ꢂatt
+70 °C Multiple Section Assembly .............(Linear tapers) 0.5 ꢂatt/section......................... (Linear tapers) 1 ꢂatt/section
(Audio tapers) 0.25 ꢂatt/section ....................... (Audio tapers) 0.5 ꢂatt/section
+125 °C.......................................................0 ꢂatt................................................................. 0 ꢂatt
Theoretical Resolution......................................Essentially infinite.............................................. Essentially infinite
1
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)....................................... ꢁ0 G......................................................................ꢁ0 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.
(ꢂhichever is greater)
(Audio tapers) 20 % maximum
Contact Resistance Variation
@ 50,000 cycles ........................................... (Linear tapers) 2 %............................................. 2 %
(Audio tapers) ꢁ %............................................. ꢁ %
Moisture Resistance (MIL-STD-202, Method 10ꢁ, 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.
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.
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