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VE S C O

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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 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 ° ± 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 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) ....................................... 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 Characteristics

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:

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

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.

3 2 1

SEE

HOW TO ORDER

CHART FOR

BUSHING OPTIONS.

10.16 ± 0.30

(.400 ± .012)

11.05 ± 0.20

(.435 ± .008)

SEE

FOR SHAFT

OPTIONS.

2.54

(.100)

2.54

(.100)

1.19

(.047)

“A” STYLE

A.R. LUG

9.53

(.375)

15.29 ± 0.56

(.602 ± .022)

.254

(.010)

GAP

5.08

(.20)

1.52

(.06)

0.76 ± 0.05

(.030 ± .002)

TYP.

Model 94 J-Hooked

Terminals, "L" Pattern

Model 93 PC Pin Terminals, "L" Pattern

22.86 ± 0.43

(.900 ± .017)

MOUNTING

SURFACE

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)

.81

(.032)

R. MAX.

5.33 ± .76

(.21 ± .03)

3.81

(.150)

MAX. TYP.

1.52

(.06)

GAP

3 2 1

SEE

HOW TO ORDER

CHART FOR

BUSHING OPTIONS.

DIA.

0.81

TYP.

(.032)

10.16 ± 0.30

(.400 ± .012)

5.08 ± 0.38

(.200 ± .015)

11.05 ± 0.20

(.435 ± .008)

SEE

FOR SHAFT

OPTIONS.

1.19

(.047)

“A” STYLE

A.R. LUG

9.53

(.375)

12.70 ± 1.02

(.500 ± .040)

Shaft Flat Orientation

2.54

(.100)

2.54

(.100)

0.76 ± 0.05

(.030 ± .002)

TYP.

120 ° ± 5 ° STD.

FLAT ORIENTATION

(SHAFT AT CCW END)

CCW

POTENTIOMETER

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)

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)

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

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)

3.988 +0.000/-0.051

(.157 +.000/-.002)

DIA.

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)

STD. LENGTHS:

12.00

16.00

22.00

(.472)

(.630) (.866)

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)

19.0

(.748)

22.0

(.866)

SHAFT TYPE "W"

(USES BUSHING A)

14.27 ± .25

(.562 ± .010)

5.49

(.216)

STD. LENGTHS:

22.23

(.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:

12.70

(.500)

15.88

(.625)

19.05

(.750)

22.23

(.875)

25.4

(1.000)

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:

16.0

(.630)

19.0

(.748)

22.0

(.866)

STD. LENGTHS:

12.70

(.500)

15.88

(.625)

19.05

(.750)

22.23

(.875)

SHAFT TYPE "E"

(USES BUSHING C)

0.79 ± 0.25

(.031 ± .010)

3.16

(.1245)

DIA

FLAT LENGTH “F”:

1.60

(.063)

4.78

(.188)

7.95

(.313)

11.13

(.438)

14.30

(.563)

FLAT LENGTH “F”:

6.99

(.275)

9.98

(.393)

12.98

(.511)

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:

22.0

(.866)

12.0

(.472)

16.0

(.630)

19.0

(.748)

22.0

(.866)

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

22.23

(.625) (.750) (.875)

12.0

(.472)

16.0

(.630)

19.0

(.748)

TOLERANCES EXCEPT AS SHOWN: .XX = ±

12.70

(.500)

25.4

(1.000)

.02

(.050)

.005

.XXX = ±

(.127)

.0005

.XXXX = ±

(.0127)

DIMENSIONS:

(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

A15

Part number for multiple section potentiometers must have

a taper and resistance value for each section.

ANTI-ROTATION LUG

Single .305 ” (7.8 mm) R,

90 °CW

No Lug

# SECTIONS

1 Single

2 Dual

SHAFT

LENGTH

(FMS)

Code Description

1/2 ”L

5/8 ”L

3/4 ”L

7/8 ”L

1 ”L

METRIC

AVAILABLE

ONLY IN

BUSHING

Code

A, C

R, U

RoHS IDENTIFIER

Compliant

Blank Non-Compliant

16 mmL

22 mmL

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 %

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

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)

16, 20, 24, 28

24, 28

16, 20, 24

Metric 16, 22

16, 20, 24, 28

16, 20, 24

16, 20, 24, 28

24, 28

Metric 16, 22

(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. 07/10

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

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