NT IA PL M CO S oH *R Features ■ ■ ■ ■ ■ ■ Wirewound and Hybritron® elements High rotational life Optional 0.20 % linearity Optional A/R lug RoHS compliant* Suitable for use under side load ■ ■ ■ Designed for HMI and MMI applications Dual gang option Servo mount option 3547 - 3-Turn Precision Potentiometer Electrical Characteristics1 Wirewound Element Hybritron® Element Standard Resistance Range ................................................................1K to 50K ohms ....................................................1K to 10K ohms Total Resistance Tolerance ..................................................................±3 % ......................................................................±10 % Independent Linearity ..........................................................................±0.25 %..................................................................±0.25 % Independent Linearity (Maximum Practical) ........................................±0.20 %..................................................................±0.20 % Effective Electrical Angle ....................................................................1080 ° +10 °, -0 ° ..................................................1080 ° +10 °, -0 ° Absolute Minimum Resistance/End Voltage ......................................1 ohm or 0.1 % maximum ....................................0.7 % 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 watts....................................................................1 watts +125 °C ..........................................................................................0 watt ....................................................................0 watt Environmental Characteristics1 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 ..........................................................................................750,000 shaft revolutions ......................................1,500,000 shaft revolutions Powered (MIL-PRF-12934)..............................................................600,000 shaft revolutions ......................................1,200,000 shaft revolutions Moisture Resistance (Mil-Std-202, Method 103) ................................±2 % TR shift max. ................................................±5 % TR shift max. IP Rating ..............................................................................................IP 50 ......................................................................IP 50 Mechanical Characteristics1 Mechanical Angle ..........................................................................................................................................................................................1080 ° +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. 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 ....................................................................................................................................................................................................18 gm (0.63 oz.) typ. Dual ........................................................................................................................................................................................................34 gm. (1.2 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) 1 At room ambient: +25 °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. 3547 - 3-Turn Precision Potentiometer Product Dimensions Single Gang, Bushing Mount 1 40.259 ± 0.762 (1.585 ± .030) 39.243 ± 0.762 (1.545 ± .030) 34.798 ± 0.762 (1.370 ± .030) 26.467 ± 0.762 (1.042 ± .030) 18.796 ± 0.381 (.740 ± .015) MOUNTING SURFACE 18.446 ± 0.381 (.726 ± .015) 2 Dual Gang, Bushing Mount 14.046 ± 0.381 (.553 ± .015) 5.715 ± 0.381 (.225 ± .015) 10.287 + 0.00/-0.05 (.405 +0.00/-.002) 3 BUSHING TYPE “B” R 0.762 (.030) ADJUSTMENT SLOT: 0.813 0.813 WIDE X DEEP (.032) (.032) 2 1 3 2 1 14.351 ± 0.381 (.565 ± .015) 6.02 ± 0.381 (.237 ± .015) SHAFT DIMENSION “A” 3 10.287 + 0.00/-0.05 (.405 +0.00/-.002) BUSHING TYPE “B” SHAFT DIMENSION “A” 1.524 ± 0.254 (.060 ± .010) 7.92 ± 0.381 (.312 ± .015) 19.812 ± 0.812 (.780 ± .032) 20.617 ± 0.787 (.812 ± .031) 1.52 (.060) 7.92 ± 0.381 (.312 ± .015) 30 ° ± 5 ° 6.86 ± 0.25 (.270 ± .010) R 16.256 (.640) MAX. 6.86 ± 0.25 (.270 ± .010) R 16.256 (.640) MAX. OPTIONAL ANTIROTATIONAL PIN 1.016 1.499 AND (.040) (.059) FROM MOUNTING SURFACE ON 7.366 RADIUS (.290) ADJ. SLOT: 0.813 WIDE X (.032) 0.813 ± .0004 DEEP (.032 ± .010) 30 ° ± 5 ° 12.7 ± 0.254 (.500 ± .010) 12.7 ± 0.254 (.500 ± .010) DIA. 12.649 ± 0.254 (.498 ± .010) MOUNTING FACE 22.479 ± 0.812 DIA. (.885 ± .032) 2 CCW 20.643 ± 0.787 (.813 ± .031) MOUNTING SURFACE WIPER 3 1 CW CLOCKWISE TOLERANCES: EXCEPT WHERE NOTED .50 .127 .0127 DECIMALS: .XX ± (.02) .XXX ± (.005) .XXXX ± (.0005) MM DIMENSIONS: (IN) Bushing Selection Bushing Material Shaft Material Bushing Type "B" Shaft Dimension "A" Code 6.34 +0/-0.022 Brass Nickel Plated Brass 3/8 " 32-UNEF- 2A THD. A (0.249 +0/-0.0009) 6.00 +0/-0.022 Brass Nickel Plated Brass M9 X 0.75-8g B (0.236 +0/-0.0009) 6.34 +0/-0.007 Bronze Stainless Steel 3/8 " 32-UNEF- 2A THD. C (0.249 +0/-0.0003) 6.00 +0/-0.007 Bronze Stainless Steel M9 X 0.75-8g D (0.236 +0/-0.0003) OPTIONAL ANTIROTATIONAL PIN 1.016 1.499 AND (.040) (.059) FROM MOUNTING SURFACE ON 7.366 RADIUS (.290) DIA. 12.649 ± 0.254 (.498 ± .010) MOUNTING FACE 22.479 ± 0.812 (.885 ± .032) DIA. CCW 3 1 2 CCW 2 WIPER 3 1 CW CW CLOCKWISE Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 3547 - 3-Turn Precision Potentiometer Product Dimensions Single Gang, Servo Mount Dual Gang, Servo Mount 23.86 ± 0.381 (.939 ± .015) 19.46 ± 0.381 (.766 ± .015) 2 1 45.67 ± 0.78 (1.798 ± .031) 44.65 ± 0.78 (1.758 ± .031) 40.21 ± 0.78 (1.583 ± .031) 31.88 ± 0.78 (1.255 ± .031) 24.206 ± 0.381 (.953 ± .015) 19.76 ± 0.381 (.778 ± .015) MOUNTING SURFACE 11.13 ± 0.381 (.438 ± .015) 15.8725 + .0000/-.0127 DIA. (.6249 +.0000/-.0005) 3 17.526 DIA. (.690) DIA. 3.1699 + .0000/-.0076 (.1248 + .0000/-.0003) 2 1 3 2 1 MOUNTING SURFACE 11.43 ± 0.381 (.450 ± .015) 15.8725 + .0000/-.0127 DIA. (.6249 +.0000/-.0005) 3 17.526 DIA. (.690) DIA. 3.1699 + .0000/-.0076 (.1248 + .0000/-.0003) 1.575 (.062) 1.575 (.062) 1.575 (.062) 9.525 ± 0.787 (.375 ± .031) 25.222 ± 0.787 (.993 ± .031) 1.575 (.062) 1.575 (.062) 1.575 (.062) 30 ° ± 5 ° 6.858 ± 0.254 (.270 ± .010) R 16.256 (.640) MAX. 9.525 ± 0.787 (.375 ± .031) 30 ° ± 5 ° 6.858 ± 0.254 (.270 ± .010) 12.7 ± 0.254 (.500 ± .010) R 16.256 (.640) MAX. 12.7 ± 0.254 (.500 ± .010) ( 22.225 ± 0.381 (.875 ± .015) ) DIA. 2 CCW WIPER 3 1 22.225 ± 0.381 (.875 ± .015) DIA. CW CLOCKWISE TOLERANCES: EXCEPT WHERE NOTED .50 .127 .0127 DECIMALS: .XX ± (.02) .XXX ± (.005) .XXXX ± (.0005) MM DIMENSIONS: (IN) CCW 3 1 2 CCW WIPER 3 1 CLOCKWISE Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 2 CW CW 3547 - 3-Turn Precision Potentiometer How To Order Panel Thickness Dimensions (For Bushing Mount Only) 3 5 4 7 S - 2 A A - 1 0 3 / 1 0 3 A 2.46 - 3.81 (.097 - .150) MODEL DESIGNATOR Code Description 3547 3-Turn PANEL HEX NUT INDEPENDENT LINEARITY Code Description A 0.25 % B 0.20 % ELEMENT TYPE Code Description H Hybritron® S Wirewound Code 102 (1K Ω) 502 (5K Ω) 103 (10K Ω) 201 (200 Ω) 501 (500 Ω) 102 (1K Ω) 202 (2K Ω) 502 (5K Ω) 103 (10K Ω) 203 (20K Ω) 503 (50K Ω) NO. OF SECTIONS Code Description 1 Single 2 Dual LOCKWASHER POT ANTI-ROTATION LUG* Code Description A None B 180 ° * Anti-rotation lug is not available for servo mount versions. 10.41 ± .08 DIA. (.410 ± .003) RESISTANCE** Element Type Hybritron® Hybritron® Hybritron® Wirewound Wirewound Wirewound Wirewound Wirewound Wirewound Wirewound Wirewound Resolution — — — 0.069 0.054 0.043 0.04 0.038 0.029 0.023 0.017 ** For Single gang, use only first three digits. For Dual gang, use six digits separated by a "/". BUSHING MOUNT 7.42 R (.292) ADDITIONAL HOLE FOR ANTIROTATION PIN 1.60 +.08/-.03 DIA. (.063 +.003/-.001) DIMENSIONS: MM (INCHES) TOLERANCES: ± Code A B C D Shaft FMS 13/16 " 20.6 mm 13/16 " 20.6 mm Shaft Dia. 1/4 " 6 mm 1/4 " 6 mm Shaft Material Nickel Plated Brass Nickel Plated Brass Stainless Steel Stainless Steel Bushing Dia. 3/8 " 9 mm 3/8 " 9 mm Bushing Material Brass Brass Bronze Bronze SERVO MOUNT Code E Shaft FMS 3/8 " Shaft Dia. 1/8 " Shaft Material Stainless Steel 0.127 (.005) Asia-Pacific: TEL +886-2 25624117 • FAX +886-2 25624116 Europe: TEL +41-41 7685555 • FAX +41-41 7685510 The Americas: TEL +1-951 781-5500 • FAX +1-951 781-5700 www.bourns.com REV. 04/08 “Hybritron” is a registered trademark of Hybritron, Inc. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.