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 WIPER 2 (.010) Tape and reel material meets Antistatic ANSI/ ESD 5541-2003 packaging standards. CCW CW 1 3 CLOCKWISE *RoHS Directive 2015/863, Mar. 31, 2015 and Annex Trimpot is a trademark of Bourns, Inc. Fluorinert is a registered trademark of 3M Co. WARNING Cancer and Specifications are subject to change without notice. Users should verify actual device performance in their specific Reproductive Harm applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the www.P65Warnings.ca.gov last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.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. 3312 - 2 mm SMD Trimming Potentiometer (.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) Asia-Pacific: Tel: +886-2 2562-4117 Email: asiacus bourns.com MM DIMENSIONS: (INCHES) Europe: Tel: +36 88 885 877 Email: eurocus bourns.com 1000/REEL/BOX The Americas: Tel: +1-951 781-5500 Email: americus bourns.com www.bourns.com REV. 08/19 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. p rTohdeucts described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.