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) 125 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 (.050 .010) whichever is greater, CRV) Additional Information (.040) Physical Characteristics Click these links for more information: 1.22 .25 Torque .............................3.0 oz-in. max. 12 3 (.048 .010) Mechanical Stops .................Wiper idles .46 .03** Terminals .......................Solderable pins (.018 .001) 2.54 (.100) 2.54 Weight ..................................... 0.015 oz. PRODUCT TECHNICAL INVENTORY SAMPLES CONTACT (.100) Marking ...........................Manufacturers LIBRARY .76 2.54 trademark, resistance code, (.030) (.100) wiring diagram, date code, manufacturers model 1.02 number and style (.040) Wiper ...............50 % (Actual TR) 10 % **Common dimensions Flammability ..........................U.L. 94V-0 Standard Packaging .....50 pcs. per tube MM DIMENSIONS: Adjustment Tool ..............................H-90 (INCHES) 0.25 TOLERANCES: EXCEPT WHERE NOTED WIPER 2 (.010) 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 3266 - 1/4 Square Trimpot Trimming Potentiometer 3312 - 2 mm SMD Trimming Potentiometer ALL PINS IN-LINE ON CENTER.43 .05 (.100) DIA. TYP. (.017 .002) MM DIMENSIONS: (INCHES) 1000/REEL/BOX Standard Resistance Table Packaging Specifications Resistance Resistance (Ohms) Code 10 100 100 101 4.01 .71 4.01 .71 (.158 .028) 200 201 (.158 .028) 12.70 REF. 500 501 (.500) 12.70 24.9 .76 REF. 1,000 102 (.500) (.980 .030) 2,000 202 8.9 +.76 /-.5 5,000 502 (.035 +.030/-.020) 2 25.9 0.76 10,000 103 3 1 8.9 +.76 /- 0.5 (1.020 .030) 20,000 203 2 (.035 +.030/-.020) 3 1 25,000 253 50,000 503 18 .76 100,000 104 18 .76 (.709 .030) 200,000 204 (.709 .030) 250,000 254 4.0 .03 18 +1.0/-0.5 4.0 .03 (709 +.040/-.020) (.157 .001) 500,000 504 DIA. (.157 .001) 1,000,000 105 18 +1.0/-0.5 12.7 +0.3/-0.25 DIA. (709 +.040/-.020) (.500 +.012/-.010) Popular distribution resistance values listed in 12.7 +0.3/-0.25 boldface. Special resistances available. (.500 +.012/- .010) 4.32 .38 How To Order 4.32 .38 (.170 .015) (.170 .015) 3266 W - 1 - 103 LF Model 2.16 .25 2.16 .25 (.085 .010) Style (.085 .010) 2.54 2.54 Standard or Modified ALL PINS IN-LINE ON CENTER.43 .05 ALL PINS IN-LINE ON CENTER (.100) DIA. TYP. (.100) (.017 .002) Product Indicator MM MM DIMENSIONS: DIMENSIONS: -1 = Standard Product (INCHES) (INCHES) Resistance Code 1000/REEL/BOX 1000/REEL/BOX Packaging Designator Blank = Tube (Standard) R = Tape and Reel (Z and Y Pin Styles Meets EIA Specification 468. Only) 4.01 .71 A = Ammo Pack (Z and Y Pin Styles Only) (.158 .028) MM 12.70 Terminations DIMENSIONS: REF. (.500) (INCHES) LF = 100 % Tin-plated (RoHS compliant) Blank = 90 % Tin / 10 % Lead-plated 8.9 +.76 /-.5 (Standard) (.035 +.030/-.020) 2 25.9 0.76 Consult factory for other available options. 3 1 (1.020 .030) Tape and reel material meets Antistatic ANSI/ ESD 5541-2003 packaging standards. 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) Asia-Pacific: Tel: +886-2 2562-4117 Email: asiacus bourns.com Europe: Tel: +36 88 885 877 Email: eurocus bourns.com 2.16 .25 (.085 .010) The Americas: Tel: +1-951 781-5500 Email: americus bourns.com 2.54 ALL PINS IN-LINE ON CENTER www.bourns.com (.100) MM DIMENSIONS: (INCHES) 1000/REEL/BOX REV. 08/21 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products 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.