Features
■ Wirewound and Hybritron® elements
■ High rotational life
■ Designed for HMI and MMI applications
■ Dual gang option
■ Optional 0.15 % linearity
■ Optional A/R lug
■ Servo mount option
■ RoHS compliant*
■ Suitable for use under side load
3548 - 5-Turn Precision Potentiometer
®
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Electrical Characteristics
Wirewound Element
Hybritron Element
Standard Resistance Range..................................................................500 to 50K ohms....................................................1K to 10K ohms
Total Resistance Tolerance....................................................................±± ꢀ.......................................................................±10 ꢀ
Independent Linearity............................................................................±0.ꢁ5 ꢀ..................................................................±0.ꢁ5 ꢀ
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 ...........................................................ꢁ0 mA.....................................................................10 mA
Dielectric Withstanding Voltage (MIL-STD-ꢁ0ꢁ, Method ±01)
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
+1ꢁ5 °C..............................................................................................0 watt......................................................................0 watt
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Environmental Characteristics
Operating Temperature Range
Dynamic.............................................................................................-40 °C to +1ꢁ5 °C...................................................-40 °C to +1ꢁ5 °C
Static..................................................................................................-55 °C to +1ꢁ5 °C...................................................-55 °C to +1ꢁ5 °C
Temperature Coefficient (Over Static Temperature Range) ..................±50 ppm/°C ............................................................±100 ppm/°C
Temperature Cycling (5 Cycles Over Static Temperature Range).........±ꢁ ꢀ TR shift max..................................................±4 ꢀ TR shift max.
Vibration (15 Gs, 10 Hz to ꢁ 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)...........................................................±ꢁ ꢀ TR shift max..................................................±5 ꢀ TR shift max.
Rotational Life
No Load.............................................................................................1,000,000 shaft revolutions ...................................ꢁ,500,000 shaft revolutions
Powered (MIL-PRF-1ꢁ9±4)................................................................1,000,000 shaft revolutions ...................................ꢁ,500,000 shaft revolutions
Moisture Resistance (Mil-Std-ꢁ0ꢁ, Method 10±)...................................±ꢁ ꢀ TR shift max..................................................±5 ꢀ TR shift max.
IP Rating................................................................................................IP 50.......................................................................IP 50
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Mechanical Characteristics
Mechanical Angle ...........................................................................................................................................................................................1800 ° +10 °, -0 °
Backlash....................................................................................................................................................................................................................1.0 ° max.
Stop Strength.......................................................................................................................................................................................5± 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.ꢁ N-cm (1.5 to 6.0 oz.-in.)
Mounting.......................................................................................................................................................................... 170-ꢁ00 N-cm (15-18 in.-lb.) max.
Shaft Runout T.I.R. ..................................................................................................................................................................................... 0.08 mm (0.00± in.)
Lateral Runout T.I.R.................................................................................................................................................................................... 0.1± 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 (0.00± in.)
Pilot Diameter Runout T.I.R........................................................................................................................................................................ 0.08 mm (0.00± in.)
Weight
Single.................................................................................................................................................................................................... 19 gm (0.67 oz.) typ.
Dual ..................................................................................................................................................................................................... ±5 gm. (1.ꢁ± 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 .................................................................................................................................................... ꢁ50 gmf (8.8 ozf)
Terminals.............................................................................................................................................................................................. Gold-plated solder lugs
Soldering Condition
Manual Soldering...........................................................96.5Sn/±.0Ag/0.5Cu solid wire or no-clean rosin cored wire, ±70 °C (700 °F) max. for ± seconds
Wave Soldering ...................................................................................96.5Sn/±.0Ag/0.5Cu solder with no-clean flux, ꢁ60 °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) ..................................................................................................................ꢁ.46-±.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)
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At room ambient: +ꢁ5 °C nominal and 50 ꢀ relative humidity nominal, except as noted.
For other options, please consult factory.
*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.
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