Features n Multiturn / Cermet / Industrial / Sealed n Standoffs allow thorough PC board washing n Tape and reel packaging available n RoHS compliant* version available n For trimmer applications/processing guidelines, click here 3266 - 1/4 Square Trimpot Trimming Potentiometer Electrical Characteristics Product Dimensions Standard Resistance Range 1.27 .38** (.050 .015) ........................10 ohms to 1 megohm 6.71 .38 4.50 .38 1.27 .25** (.264 .015) (see standard resistance table) (.177 .015) (.050 .010) 6.71 .38 Resistance Tolerance ........... 10 % std. TYP. (.264 .015) Absolute Minimum Resistance ADJ. SLOT 1.02 1.78 ........................... 1 % or 2 ohms max. (.040) DIA. 1.22 .25** (.070) 4.50 .38** (whichever is greater) (.048 .010) .51 (.177 .015) X WIDE .46 .03** Contact Resistance Variation (.020) 1.22 .25 (.018 .001) .64 ........................ 3.0 % or 3 ohms max. 7.24 .51 12 3 (.048 .010) X DEEP TYP.** (.025) (.285 .020) (whichever is greater) 7.24 .51 .46 .03** Adjustability 4.88 .51** (.285 .020) (.018 .001) 12 3 2.54 (.192 .020) Voltage Divider ...................... 0.02 % (.100) 4.50 2.54 Rheostat ................................ 0.05 % .46 .03 (.177) DIA.** (.100) (.018 .001) Resolution ................................... Infinite 2.54 Insulation Resistance ...............500 vdc. (.100) 2.54 2.16 1,000 megohms min. (.100) .76** (.085) 2.54 Dielectric Strength (.030) (.100) Sea Level................................ 600 vac 1.27 .25** 80,000 Feet ............................ 250 vac 1.02 (.050 .010) (.040) Effective Travel ................. 12 turns nom. 4.31 .38 Environmental Characteristics 1.27 .25** (.170 .015) 12 3 1.02 4.50 .38 Power Rating (300 volts max.) (.050 .010) (.040) (.177 .015) 1.22 .25** 70 C ....................................0.25 watt (.048 .010) 150 C .......................................0 watt 0.76 .25 .46 .03** 1.22 .25** (.030 .010) (.018 .001) Temperature Range ...-55 C to +125 C (.048 .010) 12 3 Temperature Coefficient ... 100 ppm/C Seal Test ......................85 C Fluorinert 7.24 .51 (.850 .020) Humidity .......MIL-STD-202 Method 103 2.54 .25 6.78 .51 2.54 (.100 .010) 96 hours (2 % TR, 10 Megohms IR) (.267 .020) (.100) 2.54 .25 4.50 .38 2.54 Vibration ....... 30 G (1 % TR 1 % VR) (.100 .010) (.177 .015) (.100) 2.54 .25 Shock ......... 100 G (1 % TR 1 % VR) (.100 .010) Load Life ...1,000 hours 0.25 watt 70 C 2.16 (3 % TR 3 % CRV) (.085) Rotational Life .......................200 cycles 1.27 .25 (4 % TR 3 % or 3 ohms, 1.02 How To Order (.050 .010) whichever is greater, CRV) (.040) 3266 W - 1 - 103 LF Physical Characteristics Model 1.22 .25 Torque .............................3.0 oz-in. max. 12 3 (.048 .010) Style Mechanical Stops .................Wiper idles .46 .03** Standard or Modified Terminals .......................Solderable pins (.018 .001) 2.54 Product Indicator (.100) 2.54 -1 = Standard Product Weight ..................................... 0.015 oz. (.100) Marking ...........................Manufacturers Resistance Code .76 2.54 trademark, resistance code, (.030) Packaging Designator (.100) Blank = Tube (Standard) wiring diagram, date code, R = Tape and Reel (Z and Y Pin Styles manufacturers model 1.02 Only) number and style (.040) A = Ammo Pack (Z and Y Pin Styles Only) Wiper ...............50 % (Actual TR) 10 % **Common dimensions Terminations Flammability ..........................U.L. 94V-0 LF = 100 % Tin-plated (RoHS compliant) Standard Packaging .....50 pcs. per tube Blank = 90 % Tin / 10 % Lead-plated MM DIMENSIONS: Adjustment Tool ..............................H-90 (Standard) (INCHES) Consult factory for other available options. 0.25 TOLERANCES: EXCEPT WHERE NOTED (.010) Tape and reel material meets Antistatic ANSI/ WIPER 2 ESD 5541-2003 packaging standards. CCW 3 CW 1 *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. CLOCKWISE Fluorinert is a registered trademark of 3M Co. Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. *RoHS COMPLIANT VERSIONS AVAILABLE *RoHS COMPLIANT LEAD FREE LEAD FREE VERSIONS ARE RoHS COMPLIANT*4.01 .71 (.158 .028) 12.70 24.9 .76 REF. (.500) (.980 .030) 8.9 +.76 /- 0.5 2 (.035 +.030/-.020) 3 1 18 .76 (.709 .030) 4.0 .03 (.157 .001) 18 +1.0/-0.5 DIA. (709 +.040/-.020) 12.7 +0.3/-0.25 (.500 +.012/- .010) 4.32 .38 (.170 .015) 2.16 .25 (.085 .010) 2.54 ALL PINS IN-LINE ON CENTER.43 .05 3266 - 1/4 Square Trimpot Trimming Potentiometer (.100) DIA. TYP. (.017 .002) MM DIMENSIONS: (INCHES) 1000/REEL/BOX Standard Resistance Table Packaging Specifications Resistance Resistance (Ohms) Code 10 100 4.01 .71 4.01 .71 100 101 (.158 .028) (.158 .028) 12.70 200 201 REF. 12.70 24.9 .76 (.500) REF. 500 501 (.500) (.980 .030) 1,000 102 8.9 +.76 /-.5 2,000 202 (.035 +.030/-.020) 2 25.9 0.76 5,000 502 8.9 +.76 /- 0.5 3 1 (1.020 .030) 10,000 103 2 (.035 +.030/-.020) 3 1 20,000 203 25,000 253 50,000 503 18 .76 18 .76 100,000 104 (.709 .030) (.709 .030) 200,000 204 4.0 .03 18 +1.0/-0.5 4.0 .03 250,000 254 (709 +.040/-.020) (.157 .001) (.157 .001) 18 +1.0/-0.5 500,000 504 DIA. 12.7 +0.3/-0.25 DIA. (709 +.040/-.020) 1,000,000 105 (.500 +.012/-.010) 12.7 +0.3/-0.25 Popular distribution resistance values listed in (.500 +.012/- .010) boldface. Special resistances available. 4.32 .38 4.32 .38 (.170 .015) (.170 .015) 2.16 .25 2.16 .25 (.085 .010) (.085 .010) 2.54 2.54 ALL PINS IN-LINE ON CENTER.43 .05 (.100) ALL PINS IN-LINE ON CENTER DIA. TYP. (.017 .002) (.100) MM DIMENSIONS: MM (INCHES) DIMENSIONS: (INCHES) 1000/REEL/BOX 1000/REEL/BOX Meets EIA Specification 468. 4.01 .71 (.158 .028) 12.70 MM REF. DIMENSIONS: (.500) (INCHES) 8.9 +.76 /-.5 (.035 +.030/-.020) 2 25.9 0.76 3 1 (1.020 .030) 18 .76 (.709 .030) 18 +1.0/-0.5 4.0 .03 (709 +.040/-.020) (.157 .001) DIA. 12.7 +0.3/-0.25 (.500 +.012/-.010) 4.32 .38 (.170 .015) 2.16 .25 (.085 .010) 2.54 ALL PINS IN-LINE ON CENTER (.100) MM DIMENSIONS: (INCHES) 1000/REEL/BOX REV. 05/16 Trimpot is a registered trademark of Bourns, Inc. Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.