Features
■ Available in a variety of pin-out
confi gurations
■ Virtually infi nite electrical circuit isolation
■ Model 96 sealed for board wash
■ Metal or plastic shaft options
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
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Initial Electrical Characteristics1 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 ° ± 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 infi nite .............................................. Essentially infi nite
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 Coeffi cient 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-202, 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
Potentiometer Specifi cations
*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
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Mechanical Characteristics1
Stop Strength (1/4 ” D shaft) .............................................................................................................................................45.19 N-cm (4 lb.-in.)
(1/8 ” D shaft) .............................................................................................................................................33.89 N-cm (3 lb.-in.)
Mechanical 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 fl ux.
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 specifi cations do not apply to units subjected to printed circuit board cleaning procedures, except
for the sealed version (Model 96).
1 At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
Potentiometer Specifi cations
Additional Features
■ 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
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Initial Electrical Characteristics1
Contacts:
DPST ........................................................................................................................................................N.O/N.O., N.C./N.C. or N.O./N.C.
DPDT ..........................................................................................................................................................2 N.O./N.C. (break before make)
Power Rating (Resistive Load):
DPST ..................................................................................... 2 A @ 125 volts RMS-60 Hz or 2 A @ 28 VDC, 1 A @ 250 volts RMS-60 Hz
DPDT .....................................................................................................................................1 A @ 125 volts RMS-60 Hz or 1 A @ 28 VDC
Contact Resistance (0.1 VDC-10 mA) ...............................................................................................................................10 milliohms nominal
Contact Bounce ...........................................................................................................................................................5 milliseconds maximum
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level ........................................................................................................................................................................1500 VAC minimum
Insulation Resistance ................................................................................................................................................. 1000 megohms minimum
Environmental Characteristics1
Operating Temperature Range .................................................................................................................................................... 0 °C to +70 °C
Exposure Temperature Range ................................................................................................................................................-65 °C to +125 °C
Vibration (Dual Section).................................................................................................................................................................................. 8 G
Contact Resistance .................................................................................................................................................. 10 milliohms maximum
Contact Bounce ................................................................................................................................................... 0.1 millisecond maximum
Shock (Dual Section).................................................................................................................................................................................... 20 G
Contact Resistance .................................................................................................................................................. 10 milliohms maximum
Contact Bounce ................................................................................................................................................... 0.1 millisecond maximum
Rotational Life ................................................................................................................................................................................25,000 cycles
Switch Actuating Torque (50% Duty cycle @ Rated Power Load) ........................................................... 1.41 to 4.94 N-cm (2 to 7 oz.-in.)
Contact Resistance ................................................................................................................................................ 100 milliohms maximum
Moisture Resistance (MIL-STD-202, Method 106, Condition B)
Contact Resistance (0.1 VDC-10 mA) ..................................................................................................................... 10 milliohms maximum
Insulation Resistance (After 24 Hours @ Room Temperature) (500 VDC) ..............................................................100 megohms minimum
Housing Material .......................................................................................................High temperature, fl ame retardant, thermosetting plastic
Mechanical Characteristics1
Actuating Torque (Each Section, Switch Module Only) .............................................................................. 3.53 to 10.59 N-cm (5 to 15 oz.-in.)
Running Torque (Out of Detent, 2-4 Module Assembly) ............................................................................. 0.21 to 1.41 N-cm (0.3 to 2 oz.-in.)
Detent ................................................................................................................................................................................CW or CCW standard
Actuation Angle ......................................................................................................................................................................................20 ° ±5 °
Contact Materials .................................................................................................................................................... Fine silver with gold overlay
Terminal Styles .............................................................................................................................................................................Solder lug only
Standard Orientation ........................................................................................................................................ In-line with control terminals
Optional .................................................................................................................................................... Rotated 90 ° CCW from standard
Terminal Strength (Before and After Soldering Heat Exposure) .................................................................................... 0.9 kg (2 lbs.) minimum
NOTE: Model 99 performance specifi cations do not apply to units subjected to printed circuit board cleaning procedures.
1 At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
Rotary Switch Specifi cations
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
91, 92, 93, 94, 95, 96, 97, 99 - 5/8 ” Square Single-Turn
Product Dimensions
SEE DETAIL
FOR
SHAFT OPTIONS
10.16
(.40)
123
Model 91 & 96 PC Pin Terminals, In-Line
1
3
1
22
5.08
(.20)
Model 93 PC Pin Terminals, "L" Pattern
3/8 THREADLESS (9.53 mm) (STYLE "D")
3/8-32 UNEF (9.53 mm) (STYLE "A")
1/4-32 UNEF (6.35 mm) (STYLE "C")
M10 X 0.75-6g (STYLE "R")
M7 X 0.75-6g (STYLE "U")
Bushing Styles
10.16
(.40)
31
2
2
13
.41
(.016)
Model 95 Solder Lug Terminals, "Triangular" Pattern
3
12
4
DPST (NO/NC)
(TYPES 50, 51, 56, 57)
3
1
4
2
DPST (NC/NC)
(TYPES 54, 55, 60, 61)
3
1
DPST (NO/NO)
(TYPES 52, 53, 58, 59)
4
2
3
1
DPDT (NC/NC)
(TYPES 70, 71, 72, 73)
4
5
6
2
Switch contacts shown in detent position.
22.86 ± .43
(.90 ± .017)
12.7
(.50)
.79 ± .41
(.031 ± .016)
9.53 ± .38
(.375 ± .015)
(STYLE A)
6.35 ± .38
(.250 ± .015) (STYLE C)
15.88 ± .38
(.625 + .015)
1.37
(.054)
2.36
(.093)
11.05 ± .20
(.435 ± .008)
15.29 ± .56
(.602 ±.022)
(MODEL 91 ONLY)
DIA.
13.72
(.54)
15.88 ± .38
(.625 ± .015)
9.53 ± .38
(.375 ± .015)
.81
(.032)
DIA.
2.54
(.100) 2.54
(.100)
5.97 ± .38
(.235 ± .015)
.81
(.032)
DIA. TYP.
10.16 ± .30
(.40 ± .012)
5.08 ± .38
(.20 ± .015)
TYP.
11.05 ± .20
(.435 ± .008)
12.7 ± 1.02
(.50 ± .040)
4.45 ± .38
(.175 ± .015)
5.59 ± .20
(.220 ± .008)
4.45 ± .38
(.175 ± .015) 2.54
(.100) 2.54
(.100)
5.08 ± 1.02
(.200 ± .040)
2.03
(.080)
3 PLCS.
(.040) WIDE X (.090) LONG
3 PLCS.
1.02 2.29
TOLERANCES EXCEPT AS SHOWN: DECIMAL .XXX ± (.015 )FRACTION ± 1/64
.XX ± (.38) ANGLE ±5 °
.128
.005
MOUNTING
SURFACE
31
2654
Model 97 1st Cup Same As Model 93
(2nd Cup - Switch)
2.77 ± .38
(.109 ± .015)
15.88
(.625)
REF.
2.54 ± 0.25
(.100 ± .010)
2.41 X 1.14
(.095 ± .045)SLOT 6 PLCS
8.26 ± 0.25
(.325 ± .010)
2.29
(.090)6 PLCS. 2 PLCS.
2.77 ± .38
(.109 ± .015)
16.89 ± .51
(.665 ± .020)
5.08
(.20)
321
321
Model 92 J-Hooked
Terminals, In-Line
Model 94 J-Hooked
Terminals, "L" Pattern
1.52
(.06)
.254
(.010)
GAP
.79
(.031) 2 PLCS.
5.33 ± .76
(.21 ± .03)
1.52
(.06)
GAP
.81
(.032)
R. MAX. 3.81
(.150)
MAX. TYP.
13
CCW
2
POTENTIOMETER
TOTAL ROTATION 300 °
CW DETENT
25 ° MAX.
ACTUATION ANGLE
(TYPES 50, 52, 54,
56, 58, 60, 70, 72)
CCW DETENT
25 ° MAX.
ACTUATION
ANGLE
(TYPES 51,
53, 55, 57, 59,
61, 71, 73)
NOTE: Switch terminals shown in vertical position.
120 ° ± 5 ° STD.
FLAT ORIENTATION
(SHAFT AT CCW END)
Switch Module Variations
Shaft Flat Orientation
MOUNTING
SURFACE
31
2654
2 3
1
Model 99 1st Cup Same As Model 95
(2nd Cup - Switch)
2.77 ± .38
(.109 ± .015)
15.88
(.625)
REF.
24.77 ± .51
(.975 ± .020)
2.41 X 1.14
(.095 ± .045)SLOT 6 PLCS
2.29
(.090)6 PLCS.
2.77 ± .38
(.109 ± .015)
16.89 ± .51
(.665 ± .020)
5.59 ± .38
(.022 ± .015)
4.45 ± .38
(.175 ± .015)
DIMENSIONS: MM
(INCHES)
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
91, 92, 93, 94, 95, 96, 97, 99 - 5/8 ” Square Single-Turn
Product Dimensions
Plastic
Shaft
Styles 1.60+.38/-.00
(.063+.015/-.000)
11.18 ± .38
(.440 ± .015)
22.23
(.875)
1.60+.38/-.00
(.063+.015/-.000)
1.80 ± 0.25
(.071 ± .010)
1.50 ± 0.25
(.059 ± .010)
“F” ± .38
(“F” ± .015)
6.32+.000/-.152
(.249+.000/.006)
DIA.
6.30+.000/-.152
(.248+.000/.006)
DIA.
5.49
(.216)
6.32+.010/-.025
(.2490+.0004/.0010)
DIA.
1.194
(.047)
5.486 ± .051
(.216 ± .002)
1.19
(.047)
6.31+.025/-.051
(.2485+.001/.002)
DIA.
14.27 ± .25
(.562 ± .010)
1.80 ± .25
(0.07 ± .001)
1.00
(.04)
1.50 ± .25
(0.06 ± .001)
13.16+.00/-.15
(.1245+.000/-.006)DIA.
48 TOOTH
5.994 +0.000/-0.051
(.236 +.000/-.002)
DIA.
DIA.
3.988 +0.000/-0.051
(.157 +.000/-.002)
SHAFT TYPE "B" (USES BUSHING A OR D) SHAFT TYPE "D" (USES BUSHING C) SHAFT TYPE "T" (USES BUSHING U)
SHAFT TYPE "C" (USES BUSHING A OR D) SHAFT TYPE "R" (USES BUSHING R) SHAFT TYPE "W" (USES BUSHING A OR D)
SHAFT TYPE "A" (USES BUSHING A) SHAFT TYPE "H" (USES BUSHING A) SHAFT TYPE "V" (USES BUSHING U)
SHAFT TYPE "G" (USES BUSHING A) SHAFT TYPE "J" (USES BUSHING R) SHAFT TYPE "Y" (USES BUSHING A)
TOLERANCES EXCEPT AS SHOWN: .XX = ±
.79
(0.03)
STD. LENGTHS:
16.00
(.630)
12.00
(.472)
22.00
(.866)
25.40
(1.00)
.02
(.050)
.XXX = ± .005
(.127)
.XXXX = ± .0005
(.0127)
6.32+.010/-.025
(.2490+.0004/.0010)
DIA
6.32+.010/-.025
(.2490+.0004/.0010)
DIA
1.00 ± 0.13
(.039 ± .054)
6.00+.000/-.035
(.2362+.0000/.0010)
DIA
12.70
(.500)
15.88
(.625)
19.05
(.750)
22.23
(.875)
25.4
(1.000)
12.0
(.472)
16.0
(.630)
19.0
(.748)
22.0
(.866)
19.05
(.750)
1.60
(.063)
14.30
(.563)
4.78
(.188)
7.95
(.313)
11.13
(.438)
Metal
Shaft
Styles
0.79 ± 0.13
(.031 ± .054)
3.99+.000/-.035
(.1571+.0000/.0010)
DIA
8.74
(.344)
9.12
(.359) .762
(.030)
1.27
(.050)
1.57
(.062)
5.97
(.235)
21 °
5.03 ± .05
(.198 ± .002)
DIA.
DIA.
5.87
(.231)
STD. LENGTHS:
STD. LENGTHS:
STD. LENGTHS:
STD. LENGTHS:
12.70
(.500)
15.88
(.625)
19.05
(.750)
22.23
(.875)
12.70
(.500)
15.88
(.625)
19.05
(.750)
STD. LENGTHS:
12.70
(.500)
15.88
(.625)
19.05
(.750)
22.23
(.875)
25.4
(1.000)
STD. LENGTHS:
16.0
(.630)
19.0
(.748)
22.0
(.866)
12.0
(.472)
16.0
(.630)
19.0
(.748)
22.0
(.866)
STD. LENGTHS:
STD. LENGTHS:
STD. LENGTHS:
STD. LENGTHS:
STD. LENGTHS:
12.70
(.500)
15.88
(.625)
19.05
(.750)
22.23
(.875)
25.4
(1.000)
FLAT LENGTH “F”:
DIMENSIONS: MM
(INCHES)
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
How to Order 90 Series Panel Controls
9 9 A 2 A - B 2 8 - A 1 5 / R51 L
9 1 A 2 A - A 2 8 - A 1 5 / A15 L
ELEMENT TAPER RESISTANCE CODE
TYPE/TOLERANCE VALUE IN OHMS
(A) Linear Cermet ±10 % (05) - 100 (30) - 15 K
(H) Linear Cermet ±5 % (28) - 150 (16) - 20 K
(06) - 200 (17) - 25 K
(07) - 250 (18) - 50 K
(08) - 500 (19) - 75 K
(09) - 750 (20) - 100 K
(10) - 1 K (31) - 150 K
(29) - 1.5 K (21) - 200 K
(11) - 2 K (22) - 250 K
(12) - 2.5 K (23) - 500 K
(13) - 5 K (24) - 750 K
(14) - 7.5 K (25) - 1 M
(15) - 10 K
(B) Linear C-P ±20 % (10) - 1 K (18) - 50 K
(E) Linear C-P ±10 % (12) - 2.5 K (20) - 100 K
(13) - 5 K (22) - 250 K
(15) - 10 K (23) - 500 K
(16) - 20 K (25) - 1 M
(17) - 25 K
(C) CW Audio Cermet ±10 % (10) - 1 K (18) - 50 K
(D) CW Audio C-P ±20 % (12) - 2.5 K (20) - 100 K
(F) CCW Audio Cermet ±10 % (13) - 5 K (22) - 250 K
(G) CCW Audio C-P ±20 % (15) - 10 K (23) - 500 K
(S) CW Audio C-P ±10 % (17) - 25 K (25) - 1 M
(T) CCW Audio C-P ± 10 %
AVAILABLE ONLY IN
SHAFT TYPE LENGTHS BUSHINGS
(CODE) (CODE)
B Plastic Single Slotted 1/4 " (6.35 mm) D 16,20,24,28 A,D
C Plastic Single Flatted 1/4" (6.35 mm) D 24,28 A,D
D Plastic Single Plain 1/8" (3.18 mm) D 16,20,24 C
R Plastic Single Slotted 6 mm D Metric 16,19,22 R
T Plastic Single Slotted 4 mm D Metric 16,19,22 U
W Plastic Single Knurled 1/4" (6.35 mm) D 32 A,D
A Metal Single Plain 1/4" (6.35 mm) D 16,20,24,28,32 A
G Metal Single Slotted 1/4" (6.35 mm) D 16,20,24,28,32 A
H Metal Single Flatted 1/4" (6.35 mm) D 16,20,24,28,32 A
J Metal Single Slotted 6 mm D Metric 12,16,19,22 R
V Metal Single Slotted 4 mm D Metric 12,16,19,22 U
Y Metal Single Knurled 1/4" (6.35 mm) D 24 A
A Metal Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L
C Metal Plain 1/4 ” (6.35 mm) D x 1/4 ” (6.35 mm) L
D Plastic Unthreaded 3/8 ” (9.53 mm) D
x 3/8 ” (9.53 mm) L
R Metal Plain 10 mm D x 9 mm L
U Metal Plain 7 mm D x 9 mm L
MODEL
91 Single-Turn, In-Line PC Pins
92 Single-Turn, In-Line J-Hooks
93 Single-Turn, L-Pattern PC Pins
94 Single-Turn, L-Pattern J-Hooks
95 Single-Turn, Triangle-Pattern Solder Lugs
96 Single-Turn, In-Line PC Pins, Sealed*
97 Single-Turn, L-Pattern PC Pins w/Switch
99 Single-Turn, Triangle-Pattern
Solder Lugs w/Switch
*Model 96 is not available in multi-gang versions.
SWITCH TYPE (MODELS 97 & 99 ONLY)
(R50) DPST N.O./N.C. CW Detent In-Line Term
(R51) DPST N.O./N.C. CCW Detent In-Line Term
(R52) DPST N.O./N.O. CW Detent In-Line Term
(R53) DPST N.O./N.O. CCW Detent In-Line Term
(R54) DPST N.C./N.C. CW Detent In-Line Term
(R55) DPST N.C./N.C. CCW Detent In-Line Term
(R56) DPST N.O./N.C. CW Detent Horz Term
(R57) DPST N.O./N.C. CCW Detent Horz Term
(R58) DPST N.O./N.O. CW Detent Horz Term
(R59) DPST N.O./N.O. CCW Detent Horz Term
(R60) DPST N.C./N.C. CW Detent Horz Term
(R61) DPST N.C./N.C. CCW Detent Horz Term
(R70) DPDT CW Detent In-Line Term
(R71) DPDT CCW Detent In-Line Term
(R72) DPDT CW Detent Horz Term
(R73) DPDT CCW Detent Horz Term
# SECTIONS APPLICABLE MODELS
1 Single Models 91 Thru 96 Only
2 Dual All Models, 2nd Section is
a Switch in Model 99
BUSHING
A Single .305 ” (7.8 mm) R,
90 °CW
C Single .305 ” (7.8 mm) R,
270 °CW
D No Lug
ANTI-ROTATION LUG
RoHS IDENTIFIER
Compliant
Non-Compliant
L
Blank
Models 91 - 96: Part number for multiple section
potentiometers must have a taper and resistance value for
each section.
Models 97 & 99: Part number must contain a switch type.
Boldface features are Bourns standard options.
All others are available with higher minimum order
quantities.
SHAFT AVAILABLE
LENGTH ONLY IN
(FMS) BUSHING
Code Description Code
16 1/2 ”L A, C, D
20 5/8 ”L A, C, D
24 3/4 ”L A, C, D
28 7/8 ”L A, D
32 1 ”L A, D
METRIC
12 12 mmL U
16 16 mmL R, U
19 19 mmL R
22 22 mmL R, U
REV. 02/10
