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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

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

Potentiometer Specifications

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 ...............................................................+1 °C to +125 °C ............................................+1 °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

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

Potentiometer Specifications

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 ,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.

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).

AT 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.

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 Characteristics

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 Characteristics

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 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.)

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 Characteristics

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.

At 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.

91, 92, 93, 94, 95, 96, 99 - 5/8 ” Square Single-Turn

Product Dimensions

Model 91 PC Pin Terminals, In-Line

22.86 ± .43

(.90 ± .017)

12.7

(.50)

.79 ± .41

(.031 ± .016)

15.88 ± .38

(.625 + .015)

1.37

(.054)

13.72

DIA.

(.54)

Model 92 J-Hooked

Terminals, In-Line

.79

(.031) 2 PLCS.

Model 99 1st Cup Same As Model 95

(2nd Cup - Switch)

24.77 ± .51

(.975 ± .020)

2.77 ± .38

(1.09 ± .015)

15.88

(.625)

REF.

9.53 ± .38

(STYLE A)

(.375 ± .015)

6.35 ± .38

(STYLE C)

(.250 ± .015)

2.36

(.093)

SEE DETAIL

FOR

SHAFT OPTIONS

15.88 ± .38

(.625 ± .015)

1 2

3 2 1

.254

(.010)

GAP

1.52

(.06)

MOUNTING

SURFACE

15.29 ± .56

(.602 ±.022)

(MODEL 91 ONLY)

2.54

(.100)

9.53 ± .38

(.375 ± .015)

5.08

(.20)

5.59 ± .38

(.022 ± .015)

16.89 ± .51

(.665 ± .020)

11.05 ± .20

(.435 ± .008)

10.16

(.40)

.81

DIA.

(.032)

2.54

(.100)

Model 94 J-Hooked

Terminals, "L" Pattern

2.41 X 1.14

SLOT 6 PLCS

(.095 ± .045)

2.29

6 PLCS.

(.090)

4 5

3 2 1

Model 93 PC Pin Terminals, "L" Pattern

.81

(.032)

R. MAX.

5.33 ± .76

(.21 ± .03)

3.81

(.150)

MAX. TYP.

1.52

(.06)

GAP

4.45 ± .38

(.175 ± .015)

2.77 ± .38

(.109 ± .015)

Switch Module Variations

Shaft Flat Orientation

120 ° ± 5 ° STD.

FLAT ORIENTATION

(SHAFT AT CCW END)

CCW

POTENTIOMETER

5.97 ± .38

(.235 ± .015)

.81

DIA. TYP.

(.032)

10.16 ± .30

(.40 ± .012)

12.7 ± 1.02

(.50 ± .040)

5.08

(.20)

Bushing Styles

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")

5.08 ± .38

(.20 ± .015)TYP.

11.05 ± .20

(.435 ± .008)

TOTAL ROTATION 300 °

CCW DETENT

25 ° MAX.

ACTUATION

ANGLE

(TYPES 51,

53, 55, 57, 59,

61, 71, 73)

CW DETENT

25 ° MAX.

ACTUATION ANGLE

(TYPES 50, 52, 54,

56, 58, 60, 70, 72)

Model 95 Solder Lug Terminals, "Triangular" Pattern

NOTE: Switch terminals shown in vertical position.

5.08 ± 1.02

(.200 ± .040)

4.45 ± .38

(.175 ± .015)

10.16

(.40)

DPST (NO/NC)

(TYPES 50, 51, 56, 57)

DPST (NC/NC)

(TYPES 54, 55, 60, 61)

DPST (NC/NC)

(TYPES 70, 71, 72, 73)

5.59 ± .20

(.220 ± .008)

4.45 ± .38

(.175 ± .015)

2.54

(.100)

2.03

(.080)

3 PLCS.

2.54

(.100)

.41

(.016)

2.29

1.02

(.040) WIDE X (.090) LONG

3 PLCS.

DPST (NO/NO)

(TYPES 52, 53, 58, 59)

Switch contacts shown in detent position.

Shaft

Styles

1.60+.38/-.00

(.063+.015/-.000)

SEE

NOTE

1.19

(.047)

SHAFT TYPE "B"

12.7 15.88 19.05 22.23

6.31+.025/-.076

DIA STD. LENGTHS "L" (1/2), (5/8), (3/4), (7/8)

(.2485+.001/.003)

USES BUSHING A OR D

SHAFT TYPE "C"

19.05 22.0

STD. LENGTHS "L" (3/4), (7/8)

USES BUSHING A OR D

SHAFT TYPE "W"

STD. LENGTHS "L" 1"

FINGER KNURL, FOR USE

WITH BUSHING A OR D

13.16+.00/-.15

DIA.

(.1245+.000/-.006)

SHAFT TYPE "D"

12.7 15.88

STD. LENGTHS "L" (1/2), (5/8),

19.05

(3/4) USES BUSHING C

SHAFT TYPE "R"

16.0 19.05 22.0

STD. LENGTHS "L" (5/8), (3/4), (7/8)

USES BUSHING R

1.80 ± .25

(0.07 ± .001)

14.27 ± .25

(.562 ± .010)

6.31+.025/-.076

DIA.

(.2485+.001/.003)

5.49

(.216)

6.31+.025/-.076

DIA.

(.2485+.001/.010)

1.50 ± .25

(0.06 ± .001)

.79

(0.03)

1.00

6.0

(.04) (.236)DIA.

SHAFT TYPE "T"

22.0

12.0 16.0

STD. LENGTHS "L" (1/2), (5/8), (7/8)

USES BUSHING U

3.988

DIA.

(.157)

.128

TOLERANCES EXCEPT AS SHOWN: DECIMAL .XXX ± (.015 )FRACTION ± 1/64

.005

.XX ±

ANGLE ±5 °

(.38)

*DIMENSIONS ARE IN MM

DIMENSIONS ARE:

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

(INCHES)

7.95

19.05

NOTE: FOR (.750) SHAFT - FLAT LENGTH IS

(.313)

22.23

11.18

FOR

(.875) SHAFT - FLAT LENGTH IS

(.440)

How to Order 90 Series Panel Controls

(Optional)

R51

ANTI-ROTATION LUG

Single .305 ” (7.8 mm) R,

90 °CW

C Single .305 ” (7.8 mm) R,

270 °CW

D No Lug

# SECTIONS

Single

Dual

APPLICABLE MODELS

Models 91 Thru 96 Only

All Models, 2nd Section is

a Switch in Model 99

(R50)

(R51)

(R52)

(R53)

(R54)

(R55)

(R56)

(R57)

(R58)

(R59)

(R60)

(R61)

(R70)

(R71)

(R72)

(R73)

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

16 16 mmL

R, U

19 19 mmL

22 22 mmL

R, U

SWITCH TYPE (MODEL 99 ONLY)

DPST N.O./N.C. CW Detent In-Line Term

DPST N.O./N.C. CCW Detent In-Line Term

DPST N.O./N.O. CW Detent In-Line Term

DPST N.O./N.O. CCW Detent In-Line Term

DPST N.C./N.C. CW Detent In-Line Term

DPST N.C./N.C. CCW Detent In-Line Term

DPST N.O./N.C. CW Detent Horz Term

DPST N.O./N.C. CCW Detent Horz Term

DPST N.O./N.O. CW Detent Horz Term

DPST N.O./N.O. CCW Detent Horz Term

DPST N.C./N.C. CW Detent Horz Term

DPST N.C./N.C. CCW Detent Horz Term

DPDT CW Detent In-Line Term

DPDT CCW Detent In-Line Term

DPDT CW Detent Horz Term

DPDT CCW Detent Horz Term

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

Plastic Unthreaded 3/8 ” (9.53 mm) D

x 3/8 ” (9.53 mm) D

Metal Plain 10 mm D x 9 mm L

Metal Plain 7 mm D x 9 mm L

ELEMENT TYPE

TAPER/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

Single-Turn, In-Line PC Pins, Sealed

Single-Turn, Triangle-Pattern

Solder Lugs w/Switch

(B)

(E)

AVAILABLE ONLY IN

LENGTHS

BUSHINGS

(CODE)

Single Slotted 1/4 ” (6.35 mm) D

16,20,24,28

A, D

Single Flatted 1/4 ” (6.35 mm) D 24,28

A, D

Single Plain 1/8 ” (3.18 mm) D

16,20,24

Single Slotted 6 mm D

Metric 16,19,22 R

Single Slotted 4 mm D

Metric 16,19,22 U

Single Knurled 1/4 ” (6.35 mm) D 32

A, D

SHAFT TYPE

(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

(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

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. 11/04

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

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