PL IA NT Features ■ For trimmer applications/processing CO M ■ 1-1/4 ” Rectangular / Multiturn *R oH S Wirewound / Industrial / Sealed ■ Panel mount option available ■ Listed on the QPL for style RT12 per MIL-PRF-27208 ■ RoHS compliant* guidelines, click here 3057 - Trimpot® Trimming Potentiometer Electrical Characteristics Standard Resistance Range .................................. 10 to 50K ohms (see standard resistance table) Resistance Tolerance ............. ±5 % std. (tighter tolerance available) Absolute Minimum Resistance .......................... 0.1 % or 1 ohm max. (whichever is greater) Noise .....................100 ohms ENR max. Resolution ........... See Resistance Table Insulation Resistance ............... 500 vdc. 1,000 megohms min. Dielectric Strength Sea Level............................. 1,500 vac 70,000 Feet ............................ 400 vac Adjustment Travel .............22 turns nom. Environmental Characteristics Power Rating @ 70 °C .................. 1 watt Power Rating @ 150 °C ................ 0 watt Temperature Range ... -55 °C to +150 °C Temperature Coefficient ..... ±50 ppm/°C Seal Test ......................85 °C Fluorinert† (pin styles only) Humidity .......MIL-STD-202 Method 106 96 hours 2 % ΔTR, 100 Megohms IR) Vibration ............. 30 G (1 % ΔTR; 0.5 % + resolution ΔVR) Shock ............... 100 G (1 % ΔTR; 0.5 % + resolution ΔVR) Load Life.... 1,000 hours 1 watt @ 70 °C (2 % ΔTR) Rotational Life ..... 200 cycles (2 % ΔTR) Physical Characteristics Torque............................. 8.0 oz-in. max. Mechanical Stops ................. Wiper idles Terminals ........ Solderable pins and lugs Flexible leads ......(7 strands of 30 AWG) Weight ....................................... 0.10 oz. Marking.........Manufacturer’s trademark, resistance code, terminal numbers, date code, manufacturer’s model number and style Wiper ............... 50 % (Actual TR) ±10 % Flammability ..........................U.L. 94V-0 Standard Packaging P&Y Style ..................10 pcs. per tube L&J Style ....................25 pcs. per bag Adjustment Tool..............................H-90 Product Dimensions 3057L Common Dimensions 31.75 (1.25) YELLOW CCW 2 3 1 CLOCKWISE GREEN CW 1 1.47 ± .56 (.058 ± .022) ADJ. SLOT 2.92 ± .38 DIA. (.115 ± .015) .64 WIDE X (.025) .79 DEEP X (.031) 2.36 DIA. (.093) MTG. HOLES (2) 4.83 (.190) 2 3 7.62 (.300) 17.78 (.700) 6.35 (.250) 2.54 (.100) .71 ± .03 DIA. TYP. (.028 ± .001) 6.10 TYP. (.240) 152.4 LEADS MIN. LENGTH (6.000) 8.00 ± .38 (.315 ± .015) 12.70 ± .79 (.500 ± .031) 6.10 TYP. (.240) 2.54 (.100) Standard Resistance Table 2.67 (.105 ) 3.43 ± .38 (.135 ± .015) Resistance (Ohms) 10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 50,000 3057J 3.80 (.150) 1 2 3 6.35 (.250) 7.62 (.300) 17.78 (.700) .71 ± .03 DIA. TYP. (.028 ± .001) Resistance Code 100 200 500 101 201 501 102 202 502 103 203 503 Nominal Resolution (Percent) 2.40 1.90 1.40 1.00 0.86 0.89 0.72 0.58 0.43 0.34 0.31 0.24 Popular values listed in boldface. Special resistances available. How To Order 2.54 (.100) 3057 L - 1 - 103 M Model 3057P .71 ± .03 (.028 ± .001) DIA. TYP. 2 1 3 17.78 (.700) 22.86 (.900) TOLERANCES: ± WIPER 3.18 (.125 ) 25.4 (1.000) DIMENSIONS: RED 3057Y 0.25 (.010) 6.60 (.260) 12.70 ± .79 (.500 ± .031) Style Standard or Modified Product Indicator -1 = Standard Product Resistance Code Optional Suffix Letter M = Panel Mount (Factory Installed) MM (INCHES) EXCEPT WHERE NOTED REV. 08/10 *RoHS Directive 2002/95/EC Jan 27 2003 including Annex. “Trimpot” is a registered trademark of Bourns, Inc. †“Fluorinert” is a registered trademark of 3M Co. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.