Features

3548 - 5-Turn Precision Potentiometer

*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.

Wirewound Element

Standard Resistance Range..................................................................500 to 50K ohms ....................................................1K to 10K ohms

Total Resistance Tolerance....................................................................±3 % .......................................................................±10 %

Independent Linearity ............................................................................±0.25 % ..................................................................±0.25 %

Independent Linearity (Maximum Practical) ..........................................±0.15 % ..................................................................±0.15 %

Effective Electrical Angle .......................................................................1800 ° +10 °, -0 °....................................................1800 ° +10 °, -0 °

Absolute Minimum Resistance/End Voltage..........................................1 ohm or 0.1 % maximum ......................................0.4 % maximum

(whichever is greater)

Noise/Output Smoothness ....................................................................100 ohms maximum...............................................0.15 % maximum

Max. Wiper Current @ 5K ohms ...........................................................20 mA.....................................................................10 mA

Dielectric Withstanding Voltage (MIL-STD-202, Method 301)

Sea Level...........................................................................................1,000 VAC minimum ..............................................1,000 VAC minimum

Insulation Resistance (500 VDC) ..........................................................1,000 megohms minimum......................................1,000 megohms minimum

Resolution..............................................................................................See How to Order chart ........................................Essentially infinite

Power Rating (Voltage Limited By Power Dissipation)

+70 °C................................................................................................1.5 watts.................................................................1.5 watts

+125 °C..............................................................................................0 watt......................................................................0 watt

Operating Temperature Range

Dynamic.............................................................................................-40 °C to +125 °C...................................................-40 °C to +125 °C

Static..................................................................................................-55 °C to +125 °C...................................................-55 °C to +125 °C

Temperature Coefficient (Over Static Temperature Range) ..................±50 ppm/°C ............................................................±100 ppm/°C

Temperature Cycling (5 Cycles Over Static Temperature Range).........±2 % TR shift max. .................................................±4 % TR shift max.

Vibration (15 Gs, 10 Hz to 2 kHz)

Wiper Bounce ....................................................................................0.1 ms max.............................................................0.1 ms max.

Shock (100 Gs, 6 ms sawtooth)

Wiper Bounce ....................................................................................0.1 ms max.............................................................0.1 ms max.

Load Life (1,000 hours @ 70 °C)...........................................................±2 % TR shift max. .................................................±5 % TR shift max.

Rotational Life

No Load .............................................................................................1,000,000 shaft revolutions ...................................2,500,000 shaft revolutions

Powered (MIL-PRF-12934)................................................................1,000,000 shaft revolutions ...................................2,500,000 shaft revolutions

Moisture Resistance (Mil-Std-202, Method 103) ...................................±2 % TR shift max. .................................................±5 % TR shift max.

IP Rating................................................................................................IP 50.......................................................................IP 50

Mechanical Angle ...........................................................................................................................................................................................1800 ° +10 °, -0 °

Backlash .................................................................................................................................................................................................................... 1.0 ° max.

Stop Strength.......................................................................................................................................................................................53 N-cm (75 oz-in.) min.

Torque

Starting ........................................................................................................................................................................................0.5 N-cm (0.7 oz.-in.) max.

Running .......................................................................................................................................................................................0.5 N-cm (0.7 oz.-in.) max.

Clutch................................................................................................................................................................................1.0 to 4.2 N-cm (1.5 to 6.0 oz.-in.)

Mounting .......................................................................................................................................................................... 170-200 N-cm (15-18 in.-lb.) max.

Shaft Runout T.I.R. ..................................................................................................................................................................................... 0.08 mm (0.003 in.)

Lateral Runout T.I.R.................................................................................................................................................................................... 0.13 mm (0.005 in.)

Shaft End Play T.I.R. .................................................................................................................................................................................. 0.15 mm (0.006 in.)

Shaft Radial Play T.I.R................................................................................................................................................................................ 0.08 mm (0.003 in.)

Pilot Diameter Runout T.I.R. ....................................................................................................................................................................... 0.08 mm (0.003 in.)

Weight

Single.................................................................................................................................................................................................... 19 gm (0.67 oz.) typ.

Dual ..................................................................................................................................................................................................... 35 gm. (1.23 oz.) typ.

Shaft Side Load (Max. Allowable)

Nickel Plated Brass Shaft w/Brass Bushing ................................................................................................................................................. 50 gmf (1.7 ozf)

Stainless Steel Shaft w/Bronze Bushing .................................................................................................................................................... 250 gmf (8.8 ozf)

Terminals .............................................................................................................................................................................................. Gold-plated solder lugs

Soldering Condition

Manual Soldering........................................................... 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire, 370 °C (700 °F) max. for 3 seconds

Wave Soldering ...................................................................................96.5Sn/3.0Ag/0.5Cu solder with no-clean flux, 260 °C (500 °F) max. for 5 seconds

Wash processes .......................................................................................................................................................................................Not recommended

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

Recommended Panel Thickness (Bushing Mount) ..................................................................................................................2.46-3.81 mm (0.097-0.150 in.)

Marking...........................................................................................................................Manufacturer’s symbol, model number, product code and date code

Standard Packaging ........................................................................................................................................................................... Plastic trays (5 pcs./tray)

For other options, please consult factory.