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
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 (Bushing A: H-37-2 & H-38-2;
NOTE: Performance specifications do not apply to units subjected to printed circuit board cleaning procedures.
1
Electrical specifications tested at 200 RPM, at room ambient: +25 °C nominal.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Model 97 & 99
– 5/8 ˝ Square Single-Turn Panel Control with Rotary Switch
Rotary Switch Specifications
Initial Electrical Characteristics
1
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 Bounce ..........................................................................................................................................................5 milliseconds maximum
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
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
Housing Material .......................................................................................................High temperature, flame retardant, thermosetting plastic
Mechanical Characteristics
1
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
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: Performance specifications do not apply to units subjected to printed circuit board cleaning procedures.
1
Electrical specifications tested at 200 RPM, at room ambient: +25 °C nominal.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Model 97 & 99
– 5/8 ˝ Square Single-Turn Panel Control with Rotary Switch
Product Dimensions
Model 97 PC Pin Terminals, “L” Pattern
MOUNTING
SURFACE
15.88
(.625)
7.92
(.312)
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)
SEE
HOW TO ORDER
CHART FOR
BUSHING OPTIONS.
DIA.
0.81
TYP.
(.032)
5.08 ± 0.38
(.200 ± .015)
11.05 ± 0.20
(.435 ± .008)
R1
1
3
2
1.19
(.047)
“A” STYLE
A.R. LUG
R
9.53
(.375)
12.7 ± 1.02
(.500 ± .040)
2.54
(.100)
2.54
(.100)
SEE
NEXT PAGE
FOR SHAFT
OPTIONS.
0.76 ± 0.05
(.030 ± .002)
TYP.
Model 99 Solder Lug Terminals, "Triangular" Pattern
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Model 97 & 99
– 5/8 ˝ Square Single-Turn Panel Control with Rotary Switch
Product Dimensions
Model 97
(2nd Cup - Switch)
MOUNTING
SURFACE
L
2.77 ± .38
(.109 ± .015)
15.88
(.625)
REF.
Horizontal Term.
(Switch Types R57, R59)
18.42 ± 0.38
(.725 ± .015)
15.88
(.625)
3
1
4
5
6
2
16.89 ± .51
(.665 ± .020)
15.88 ± 0.38
(.625 ± .015)
2 PLCS.
2.29
6 PLCS.
(.090)
2.54 ± 0.25
2 PLCS.
(.100 ± .010)
2.54
(.100)
3
1
8.74 ± 0.25
(.344 ± .010)
2.41 X 1.14
SLOT 6 PLCS
(.095 X .045)
4 5
6 2
2.77 ± .38
(.109 ± .015)
8.26 ± 0.25
(.325 ± .010)
Model 99
(2nd Cup - Switch)
MOUNTING
SURFACE
2.77 ± .38
(.109 ± .015)
L
24.77 ± .51
(.975 ± .020)
15.88
(.625)
REF.
Switch Module Variations
Shaft Flat Orientation
120 ° ± 5 ° STD.
FLAT ORIENTATION
(SHAFT AT CCW END)
1
CCW
2
POTENTIOMETER
3
3
1
TOTAL ROTATION 300 °
5.59 ± .38
(.022 ± .015)
16.89 ± .51
(.665 ± .020)
2.41 X 1.14
SLOT 6 PLCS
(.095 X .045)
CCW DETENT
25 ° MAX.
ACTUATION
ANGLE
(TYPES 51,
53, 57, 59)
CW DETENT
25 ° MAX.
ACTUATION ANGLE
(TYPES 50, 52)
4 5
6
2
NOTE: Switch terminals shown in vertical position.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
