*R*R oHoH S VEVES COCO A AV V RRS MM S AIAIL IOIO PLPL LA A NN IAIA BLBL S S NTNT EE Features 3/8 " Square/ Multiturn / Cermet / Industrial / Sealed Five popular terminal styles Standoffs RoHS compliant* version available For trimmer applications/processing guidelines, click here 3299 - 3/8 " Square Trimpot(R) Trimming Potentiometer Electrical Characteristics Standard Resistance Range ................................10 to 2 megohms (see standard resistance table) Resistance Tolerance ........... 10 % std. (tighter tolerance available) Absolute Minimum Resistance ........................... 1 % or 2 ohms max. (whichever is greater) Contact Resistance Variation ........................ 1.0 % or 3 ohms max. (whichever is greater) Adjustability Voltage .................................. 0.01 % Resistance ............................ 0.05 % Resolution ................................... Infinite Insulation Resistance ............... 500 vdc. 1,000 megohms min. Dielectric Strength Sea Level................................ 900 vac 70,000 Feet ............................ 350 vac Effective Travel .................25 turns nom. Environmental Characteristics Power Rating (300 volts max.) 70 C ...................................... 0.5 watt 125 C ....................................... 0 watt Temperature Range ... -55 C to +125 C Temperature Coefficient ... 100 ppm/C Seal Test ......................85 C Fluorinert Humidity .......MIL-STD-202 Method 103 96 hours (2 % TR, 10 Megohms IR) Vibration ....... 20 G (1 % TR; 1 % VR) Shock ......... 100 G (1 % TR; 1 % VR) Load Life ............. 1,000 hours 0.5 watt @ 70 C (3 % TR; 3 % or 3 ohms, whichever is greater, CRV) Rotational Life .......................200 cycles (4 % TR; 3 % or 3 ohms, whichever is greater, CRV) Physical Characteristics Torque............................. 3.0 oz-in. max. Mechanical Stops ................. Wiper idles Terminals .......................Solderable pins Weight ..................................... 0.035 oz. Marking........................... Manufacturer's trademark, resistance code, wiring diagram, date code, manufacturer's model number and style Wiper ............... 50 % (Actual TR) 10 % Flammability ..........................U.L. 94V-0 Standard Packaging .....50 pcs. per tube Adjustment Tool..............................H-90 Standard Resistance Table Product Dimensions 3299P Common Dimensions 2.54 (.100) 1.09 (.043) .38 (.015) 9.53 (.375) Resistance (Ohms) 10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 25,000 50,000 100,000 200,000 250,000 500,000 1,000,000 2,000,000 2.54 (.100) 1.12 (.044) 1.52 (.060) 10.03 (.395) 6.22 1.14 (.245 .045) 6.10 +.30/-.25 (.240 +.012/-.010) 3 .51 ADJ. SLOT 2 DIA. TYP. (.020) 2.29 DIA. 1 (.090) .56 WIDE X (.022) 5.23 .64 2.54 DEEP (.206) X (.025) (.100) BOTTOM VIEW 1.91 3299W (.075) 2.54 (.100) Popular distribution resistance values listed in boldface. Special resistances available. 3 How To Order 2 3299 W - 1 - 103 LF 1 BOTTOM VIEW 2.54 (.100) MIN. 2.54 (.100) 1.91 (.075) 3 2 BOTTOM VIEW 2.54 (.100) 2.54 (.100) Standard or Modified Product Indicator -1 = Standard Product Resistance Code 1 3299Y Model Style 3299X 2.54 (.100) Resistance Code 100 200 500 101 201 501 102 202 502 103 203 253 503 104 204 254 504 105 205 1.91 (.075) 3 Terminations LF = 100 % Tin-plated (RoHS compliant) Blank = 90 % Tin / 10 % Lead-plated (Standard) Consult factory for other available options. 2 1 2.54 (.100) BOTTOM VIEW 3299Z 2.54 (.100) 2.54 (.100) 1.91 (.075) 3 2 1 2.54 (.100) BOTTOM VIEW 2 CCW WIPER 3 1 CW CLOCKWISE DIMENSIONS: TOLERANCES: 0.25 (.010) MM (INCHES) EXCEPT WHERE NOTED REV. 04/14 "Trimpot" is a registered trademark of Bourns, Inc. "Fluorinert" is a registered trademark of 3M Co. *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. 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.