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51RAM-B28-A15L Datasheet(PDF) 1 Page - Bourns Electronic Solutions |
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51RAM-B28-A15L Datasheet(HTML) 1 Page - Bourns Electronic Solutions |
1 / 3 page Features ■ RoHS compliant* ■ Conductive plastic or cermet ■ Linear and audio tapers ■ PC board and bushing mount ■ Gangable ■ Metal bushing and shaft ■ Sealed for board washing 51/53 - Sealed 1/2 ” (12.5 mm) Square Control *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. Electrical Characteristics1 Conductive Plastic Cermet Standard Resistance Range Linear ...................................................................................................1 K ohms to 1 megohm......................... 150 ohms to 1 megohm Audio ....................................................................................................1 K ohms to 1 megohm......................... 1 K ohms to 1 megohm Total Resistance Tolerance Linear Tapers........................................................................................±10 % or ±20 %.................................... ±10 % or ±5 % Audio Tapers ........................................................................................±10 % or ±20 %.................................... ±10 % Independent Linearity.................................................................................±5 %...................................................... ±5 % Absolute Minimum Resistance...................................................................2 ohms maximum.................................. 2 ohms maximum Effective Electrical Angle ............................................................................270 ° ±5 ° .............................................. 270 ° ±5 ° Contact Resistance Variation .....................................................................2 % ........................................................ 2 % Dielectric Withstanding Voltage (MIL-STD-202 – Method 301) Sea Level..............................................................................................1,500 VAC minimum.............................. 1,500 VAC minimum 70,000 ..................................................................................................500 VAC minimum................................. 500 VAC minimum Insulation Resistance .................................................................................1,000 megohms minimum..................... 1,000 megohms minimum Power Rating At 70 °C (Derate To 0 At 125 °C) (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less) Linear Tapers........................................................................................0.5 watt.................................................. 1.0 watt Audio Tapers ........................................................................................0.25 watt................................................ 0.5 watt Theoretical Resolution................................................................................Essentially infinite .................................. Essentially infinite Environmental Characteristics1 Operating Temperature Range ...................................................................+1 °C to +125 °C ................................... +1 °C to +125 °C Storage Temperature Range ......................................................................-55 °C to +125 °C.................................. -55 °C to +125 °C Temperature Coefficient Over Storage Temperature Range ......................±1,000 ppm/°C...................................... ±150 ppm/°C Vibration (Single Section) ...........................................................................15 G....................................................... 15 G Total Resistance Shift...........................................................................±2 % maximum ..................................... ±2 % maximum Voltage Ratio Shift................................................................................±5 % maximum ..................................... ±5 % maximum Shock (Single Section) ...............................................................................30 G....................................................... 30 G Total Resistance Shift...........................................................................+2 % maximum ..................................... ±2 % maximum Voltage Ratio Shift................................................................................±5 % maximum ..................................... ±5 % maximum Load Life.....................................................................................................1,000 hours ........................................... 1,000 hours Total Resistance Shift...........................................................................±10 % TRS maximum ........................... ±5 % TRS maximum Rotational Life (No Load)............................................................................50,000 cycles ........................................ 25,000 cycles Total Resistance Shift...........................................................................±10 % TRS maximum ........................... ±10 % TRS maximum Contact Resistance Variation @ 25,000 Cycles ...................................±2 %...................................................... ±4 % Moisture Resistance (MIL-STD-202, Method 103, Condition B) Total Resistance Shift...........................................................................±10 % TRS............................................ ±5 % TRS IP Rating .....................................................................................................IP 64 ...................................................... IP 64 Mechanical Characteristics Stop Strength ............................................................................................................................................................................................... 56 N-cm (5 lb.-in.) Mechanical Angle ...................................................................................................................................................................................................... 290 ° ±5 ° Torque Starting (Dual Sections).............................................................................................................................................. +0.35 N-cm (+0.5 oz.-in.) maximum Running (Single Section) ............................................................................................................................................. 0.15 to 1.4 N-cm (0.2 to 2.0 oz.-in.) Running (Dual Section)................................................................................................................................................ 0.35 to 1.8 N-cm (0.5 to 2.5 oz.-in.) Mounting (Torque on Bushing) .......................................................................................................................... 1.7 to 2.0 N-m (15 to 18 lb.-in.) maximum Weight (Single Section).............................................................................................................................................................................................. 5.5 grams (Additional Section) ............................................................................................................................................................................................. 3.0 grams Terminals ................................................................................................................................................................................................... PC pin or solder lug 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, part number, resistance value and date code. Ganging (Multiple Section Potentiometer) ............................................................................................................................................ 2 sections maximum** Hardware ...........................................One lockwasher and one mounting nut is shipped with each potentiometer, except where noted in the part number. 1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted. ** Additional sections available on special request with higher minimum order quantities. |
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