91A1A-C28-D22 Bourns Inc., 91A1A-C28-D22 Datasheet - Page 2

• Manufacturer Part Number: 91A1A-C28-D22
• Description: Panel Mount Potentiometers 5/8 250K 20% Square Single Turn
• Manufacturer: Bourns Inc.

Specifications of 91A1A-C28-D22

• Resistance: 250 KOhms
• Tolerance: 20 %
• Power Rating: 0.25 Watt (1/4 Watt)
• Termination Style: Pin
• Taper: Audio
• Number Of Turns: 1
• Element Type: Conductive Plastic
• Shaft Type: Flatted / D
• Shaft Length: 7/8 in
• Shaft Diameter: 1/4 in
• Operating Temperature Range: - 40 C to + 125 C
• Product: Panel Mount Potentiometers
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Stop Strength (1/4 ” D shaft) .............................................................................................................................................45.19 N-cm (4 lb.-in.)
Mechanical Angle .................................................................................................................................................................................300 ° ±5 °
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.)
Weight (Single Section, Metal Bushing) ...............................................................................................................................12.7 grams nominal
Terminals .................................................................................................................................Printed circuit terminals, J-Hooks or solder lugs
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:
1
At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
Mechanical Characteristics
Starting ........................................................................................................................................... 0.3 max. above average running torque
Running Torque
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
(Each Additional Section) ....................................................................................................................................................4 grams nominal
Soldering Condition ...........................................Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ” wire diameter.
Model 91, 92, 93, 94 & 95 - 5/8 ” Square Single-Turn Panel Control
Performance specifi cations do not apply to units subjected to printed circuit board cleaning procedures.
(1/8 ” D shaft) .............................................................................................................................................33.89 N-cm (3 lb.-in.)
1
Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean fl ux.
Customers should verify actual device performance in their specifi c applications.
Specifi cations are subject to change without notice.