3851/3852/3856 – 3/4 ˝ Diameter Panel Control

Mechanical Characteristics1

Stop Strength

3851 & 3852..................................................................................................................................................................56.5 N-cm (5 lb.-in.)

3856.....................................................................................................................................................................................Continuous turn

Mechanical Angle............................................................................................................................................ 280 ° ±5 ° / 3856 – 1350 ° ±50 °

Torque (Starting and Running)..................................................................................... A & B bushings 0.35 to 4.23 N-cm (0.05 to 6.0 oz.-in.)

C & E bushings 0.21 to 4.23 N-cm (0.3 to 6.0 oz.-in.)

3856 – 0.11 to 2.12 N-cm (0.15 to 3.0 oz.-in.)

Mounting (Torque on Bushing)...........................................................................................................1.7-2.0 N-m (15-18 lb.-in.) maximum

Weight (Single Section) ......................................................................................................................................................30 grams maximum

Terminals................................................................................................................................................Printed circuit terminals 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.

Part can be wave soldered at 260 °C (500 °F) for 5 seconds, no wash process with no clean flux.

Marking...........................................................................Manufacturer’s trademark, wiring diagram, resistance, date code, and part number

Ganging (Multiple Section Potentiometers)..............................................................................................................................1 cup maximum

Hardware....................................................................................One lockwasher and one mounting nut is shipped with each potentiometer;

locking bushing versions are shipped with one additional locking nut

(Bushing A&H: H-37-2 & H-38-2; Bushing B: H-37-2, H-38-2 & H-38-4; Bushing C: H-37-1 & H-38-1;

Bushing E: H-37-1, H-38-1 & H-38-3)

1 Electrical specifications tested at 250 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.