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*R oH V SC AV ER OM AI SIO PL LA N IA BL S NT E
Features
Available in a variety of pin-out
configurations
Virtually infinite electrical circuit isolation Metal or plastic shaft options RoHS compliant versions available*
Model 91, 92, 93, 94 & 95 - 5/8 " Square Single-Turn Panel Control
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 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-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 ............................................................ IP 40 .....................................................................IP 40
*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.
Model 91, 92, 93, 94 & 95 - 5/8 " Square Single-Turn Panel Control
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 & 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 .............................................................................................................................................1.7-2.0 N-m (15-18 lb.-in.) maximum Variation ...................................................................................................................... 0.35 N-cm (0.5 oz.-in.) maximum in 45 shaft travel 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 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. NOTE:
1At
Performance specifications do not apply to units subjected to printed circuit board cleaning procedures.
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.
Model 91, 92, 93, 94 & 95 - 5/8 " Square Single-Turn Panel Control
Product Dimensions
Model 91 PC Pin Terminals, In-Line
22.86 0.43 (.900 .017) MOUNTING SURFACE L 12.70 .229 (.500 .009) 0.79 .025 (.031 .010) DIA. 13.72 0.38 (.540 .015) 1.37 0.08 (.054 .003) 2.36 0.08 (.093 .003) 15.88 (.625) 7.92 (.312)
Model 92 J-Hooked Terminals, In-Line
.79 (.031) 2 PLCS.
321
.254 (.010) GAP
SEE HOW TO ORDER CHART FOR BUSHING OPTIONS. 10.16 0.30 (.400 .012) 11.05 0.20 (.435 .008) SEE NEXT PAGE FOR SHAFT OPTIONS.
1.19 R (.047) "A" STYLE A.R. LUG
9.53 (.375) 15.29 0.56 (.602 .022)
5.08 (.20)
1.52 (.06)
R2
R1
1 2 3
1 2 3
2.54 (.100) 2.54 (.100)
Model 94 J-Hooked Terminals, "L" Pattern
0.76 0.05 (.030 .002) TYP.
Model 93 PC Pin Terminals, "L" Pattern
22.86 0.43 (.900 .017) MOUNTING SURFACE
L
12.70 .229 (.500 .009) 0.79 .025 (.031 .010)
DIA. 13.72 0.38 (.540 .015) 1.37 0.08 (.054 .003) 2.36 0.08 (.093 .003)
15.88 (.625) 7.92 (.312)
321
1.52 (.06) GAP
.81 (.032) R. MAX.
5.33 .76 (.21 .03) 3.81 (.150) MAX. TYP.
SEE HOW TO ORDER CHART FOR BUSHING OPTIONS. DIA. 0.81 TYP. (.032) 10.16 0.30 (.400 .012)
R2 R1
5.08 0.38 (.200 .015) 11.05 0.20 (.435 .008) SEE NEXT PAGE FOR SHAFT OPTIONS.
1.19 R (.047) "A" STYLE A.R. LUG
9.53 (.375) 12.70 1.02 (.500 .040)
Shaft Flat Orientation
2.54 (.100) 2.54 (.100)
120 5 STD. FLAT ORIENTATION (SHAFT AT CCW END)
1 3 2
1 3 2
0.76 0.05 (.030 .002) TYP.
1 CCW 2 POTENTIOMETER
3
Model 95 Solder Lug Terminals, "Triangular" Pattern
5.08 1.02 (.200 .040)
4.45 .38 (.175 .015) 10.16 (.40)
5.59 .20 (.220 .008) 4.45 .38 (.175 .015)
1 1
2.54 (.100)
2.54 (.100)
2.03 (.080) 3 PLCS.
.41 (.016)
2.29 1.02 (.040) WIDE X (.090) LONG 3 PLCS.
.381 TOLERANCES EXCEPT AS SHOWN: DECIMAL .XXX (.015 )FRACTION 1/64 9.65 .XX ANGLE 5 (.38)
2
3
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
3
2
Model 91, 92, 93, 94 & 95 - 5/8 " Square Single-Turn Panel Control
Product Dimensions
Plastic Shaft Styles
SHAFT TYPE "B" (USES BUSHING A)
1.60+.38/-.00 (.063+.015/-.000) 6.32+.000/-.152 (.249+.000/.006) DIA.
SHAFT TYPE "D" (USES BUSHING C)
13.16+.00/-.15 DIA. (.1245+.000/-.006)
SHAFT TYPE "T" (USES BUSHING U)
1.50 .25 (0.06 .001) .79 (0.03) STD. LENGTHS:
16.0 (.630) 22.0 (.866)
1.19 (.047) STD. LENGTHS: 15.88 19.05 (.625) (.750)
12.70 (.500)
22.23 (.875)
STD. LENGTHS: 12.70 15.88 19.05 (.500) (.625) (.750)
3.988 +0.000/-0.051 (.157 +.000/-.002) DIA.
SHAFT TYPE "C" (USES BUSHING A)
11.18 .38 (.440 .015)
SHAFT TYPE "R" (USES BUSHING R)
1.80 .25 (0.07 .001) 5.994 +0.000/-0.051 (.236 +.000/-.002) DIA. 1.00 (.04) STD. LENGTHS:
16.0 (.630) 22.0 (.866)
SHAFT TYPE "W" (USES BUSHING A)
14.27 .25 (.562 .010)
5.49 (.216) STD. LENGTHS: 19.05 22.23 (.750) (.875)
6.30+.000/-.152 (.248+.000/.006) DIA.
48 TOOTH
6.31+.025/-.051 (.2485+.001/.002) DIA. STD. LENGTHS: 25.40 (1.00)
Metal Shaft Styles
SHAFT TYPE "A" (USES BUSHING A)
6.32+.010/-.025 (.2490+.0004/.0010) DIA
SHAFT TYPE "H" (USES BUSHING A)
"F" .38 ("F" .015) 6.32+.010/-.025 (.2490+.0004/.0010) DIA 5.486 .051 (.216 .002) 25.4 (1.000) STD. LENGTHS: 19.05 (.750) 22.23 (.875)
SHAFT TYPE "S" (USES BUSHING R)
"F" .381 ("F" .015) 6.000+.000/-.035 (.2362+.0000/.0014) DIA 3.988 .076 (.157 .003) STD. LENGTHS: 19.05 (.750) 22.23 (.875)
STD. LENGTHS: 12.70 (.500) 15.88 (.625) 19.05 (.750) 22.23 (.875)
FLAT LENGTH "F":
FLAT LENGTH "F":
9.98 (.393) 12.98 (.511)
SHAFT TYPE "E" (USES BUSHING C)
0.79 0.25 (.031 .010) 3.16 (.1245) DIA
7.95 (.313)
11.13 (.438)
SHAFT TYPE "J" (USES BUSHING R)
1.80 0.25 (.071 .010) 6.00+.000/-.035 (.2362+.0000/.0010) DIA
SHAFT TYPE "V" (USES BUSHING U)
1.50 0.25 (.059 .010) 3.99+.000/-.035 (.1571+.0000/.0010) DIA
0.79 (.031) STD. LENGTHS:
12.0 (.500) 16.0 (.625) 19.0 (.750)
1.00 0.13 (.039 .054) STD. LENGTHS:
0.79 0.13 (.031 .054) STD. LENGTHS: 19.05 (.750) 22.23 (.875)
SHAFT TYPE "G" (USES BUSHING A)
1.60+.38/-.00 (.063+.015/-.000) 6.32+.010/-.025 (.2490+.0004/.0010) DIA. 1.194 (.047) STD. LENGTHS: 15.88 19.05 (.625) (.750)
16.0 (.630)
22.0 (.866)
TOLERANCES EXCEPT AS SHOWN: .XX =
.02 (.050) .005 .XXX = (.127) .0005 .XXXX = (.0127)
12.70 (.500)
22.23 (.875)
DIMENSIONS:
MM (INCHES)
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
How to Order Model 91, 92, 93, 94 & 95 Panel Controls
91 A 2 A A 28 A 15 / A15 L
Part number for multiple section potentiometers must have a taper and resistance value for each section.
A D
ANTI-ROTATION LUG Single .305 " (7.8 mm) R, 90 CW No Lug
# SECTIONS 1 Single 2 Dual
SHAFT LENGTH (FMS) Code Description 16 1/2 "L 20 5/8 "L 24 3/4 "L 28 7/8 "L 32 1 "L
METRIC
AVAILABLE ONLY IN BUSHING Code A, C A, C A, C A A R, U R, U
RoHS IDENTIFIER L Compliant Blank Non-Compliant
16 22
16 mmL 22 mmL
A C R U
BUSHING Metal Plain 3/8 " (9.53 mm) D x 3/8 " (9.53 mm) L Metal Plain 1/4 " (6.35 mm) D x 1/4 " (6.35 mm) L Metal Plain 10 mm D x 9 mm L Metal Plain 7 mm D x 9 mm L
ELEMENT TAPER TYPE/TOLERANCE (A) Linear Cermet 10 % (H) Linear Cermet 5 %
91 92 93 94 95
MODEL Single-Turn, In-Line PC Pins Single-Turn, In-Line J-Hooks Single-Turn, L-Pattern PC Pins Single-Turn, L-Pattern J-Hooks Single-Turn, Triangle-Pattern Solder Lugs (B) (E)
SHAFT TYPE B C D R T W A E G H J S V Plastic Single Slotted 1/4 " (6.35 mm) D Plastic Single Flatted 1/4" (6.35 mm) D Plastic Single Plain 1/8" (3.18 mm) D Plastic Single Slotted 6 mm D Plastic Single Slotted 4 mm D Plastic Single Knurled 1/4" (6.35 mm) D Metal Single Plain 1/4" (6.35 mm) D Metal Single Slotted 1/8" (3.18 mm) D Metal Single Slotted 1/4" (6.35 mm) D Metal Single Flatted 1/4" (6.35 mm) D Metal Single Slotted 6 mm D Metal Single Flatted 6 mm D Metal Single Slotted 4 mm D
AVAILABLE ONLY IN LENGTHS BUSHINGS (CODE) (CODE) 16, 20, 24, 28 A 24, 28 A 16, 20, 24 C Metric 16, 22 R Metric 16, 22 U 32 A 16, 20, 24 A 16, 20, 24 C 16, 20, 24, 28 A 24, 28 A Metric 16, 22 R Metric 16, 22 R Metric 16, 22 U
(C) (D) (F) (G) (S) (T)
RESISTANCE CODE VALUE IN OHMS (05) - 100 (30) - 15 K (28) - 150 (16) - 20 K (06) - 200 (17) - 25 K (07) - 250 (18) - 50 K (08) - 500 (20) - 100 K (10) - 1 K (21) - 200 K (11) - 2 K (22) - 250 K (12) - 2.5 K (23) - 500 K (13) - 5 K (25) - 1 M (15) - 10 K Linear C-P 20 % (10) - 1 K (18) - 50 K 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 CW Audio Cermet 10 % (10) - 1 K (18) - 50 K CW Audio C-P 20 % (12) - 2.5 K (20) - 100 K CCW Audio Cermet 10 % (13) - 5 K (22) - 250 K CCW Audio C-P 20 % (15) - 10 K (23) - 500 K CW Audio C-P 10 % (17) - 25 K (25) - 1 M CCW Audio C-P 10 %
Boldface features are Bourns standard options. All others are available with higher minimum order quantities.
REV. 10/10
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.

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