*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.
91, 92, 93, 94, 95, 96, 99 - 5/8 ” Square Single-Turn Panel Control
99 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
Initial Electrical Characteristics1Conductive 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 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
Features
■Features one-piece molded plastic shaft
and rotor assembly
■Available in a variety of pin-out
configurations
■Virtually infinite electrical circuit isolation
■Model 96 sealed for board wash
■Metal shaft available as special feature
■RoHS compliant versions available*
Potentiometer Specifications
*RoHS COMPLIANT
VERSIONS
AVAILABLE
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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.
91, 92, 93, 94, 95, 96, 99 - 5/8 ” Square Single-Turn Panel Control
99 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
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) ..................................................................................................................................................................................7 grams maximum
(Each Additional Section) ..........................................................................................................................................................................4 grams maximum
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.
Potentiometer Specifications
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
91, 92, 93, 94, 95, 96, 99 - 5/8 ” Square Single-Turn Panel Control
99 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
Rotary Switch Specifications
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, flame 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 specifications do not apply to units subjected to printed circuit board cleaning procedures.
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.
SEE DETAIL
FOR
SHAFT OPTIONS
10.16
(.40)
123
Model 91 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
SEE
NOTE
Shaft
Styles
*DIMENSIONS ARE IN MM
SHAFT TYPE "W"
STD. LENGTHS "L" 1"
FINGER KNURL, FOR USE
WITH BUSHING A OR D
SHAFT TYPE "R"
STD. LENGTHS "L" (5/8), (3/4), (7/8)
USES BUSHING R
SHAFT TYPE "T"
STD. LENGTHS "L" (1/2), (5/8), (7/8)
USES BUSHING U
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
1DPST (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
1.60+.38/-.00
(.063+.015/-.000)
6.31+.025/-.076
(.2485+.001/.003)DIA
6.31+.025/-.076
(.2485+.001/.003)
DIA.
5.49
(.216)
1.19
(.047)
6.31+.025/-.076
(.2485+.001/.010)
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.
6.0
(.236)DIA.
DIA.
3.988
(.157)
SHAFT TYPE "B"
STD. LENGTHS "L" (1/2), (5/8),
12.7
15.88 19.05
(3/4), 22.23
(7/8)
SHAFT TYPE "C"
STD. LENGTHS "L" (3/4), (7/8)
USES BUSHING A OR D
19.05 22.0
SHAFT TYPE "D"
STD. LENGTHS "L" (1/2), (5/8),
(3/4) USES BUSHING C
12.7 15.88
19.05
NOTE: FOR (.750) SHAFT - FLAT LENGTH IS (.313)
FOR (.875) SHAFT - FLAT LENGTH IS (.440)
19.05 7.95
11.18
TOLERANCES EXCEPT AS SHOWN: DECIMAL .XXX ± (.015 )FRACTION ± 1/64
.XX ± (.38) ANGLE ±5 °
.128
.005
16.0 19.05 22.0
16.0 22.0
12.0
.79
(0.03)
22.23
USES BUSHING A OR D
MOUNTING
SURFACE
31
2654
2 3
1
Model 99 1st Cup Same As Model 95
(2nd Cup - Switch)
2.77 ± .38
(1.09 ± .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)
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
DIMENSIONS ARE: MM
(INCHES)
91, 92, 93, 94, 95, 96, 99 - 5/8 ” Square Single-Turn
Product Dimensions
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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
ANTI-ROTATION LUG
A Single .305 (7.8 mm) R,
90 ¡CW
C Single .305 ” (7.8 mm) R,
270 °CW
D No Lug
# SECTIONS APPLICABLE MODELS
1 Single Models 91 Thru 96 Only
2 Dual All Models, 2nd Section is
a Switch in Model 99
AVAILABLE ONLY IN
SHAFT TYPE LENGTHS BUSHINGS
(CODE) (CODE)
B Single Slotted 1/4 (6.35 mm) D 16,20,24,28 A, D
C Single Flatted 1/4 (6.35 mm) D 24,28 A, D
D Single Plain 1/8 (3.18 mm) D 16,20,24 C
R Single Slotted 6 mm D Metric 16,19,22 R
T Single Slotted 4 mm D Metric 16,19,22 U
W Single Knurled 1/4 ” (6.35 mm) D 32 A, D
ELEMENT TYPE RESISTANCE CODE
TAPER/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 %
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
BUSHING
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
How to Order 90 Series Panel Controls
Boldface features are Bourns standard options.
All others are available with higher minimum order quantities.
REV. 06/06
91 A 2 A - B 28 - A 15
R51
99 A 2 A - B 28 - A 15 /
A15
/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.
L
L
POTENTIOMETER TYPE
L RoHS Compliant
Blank Standard
