*R oH VE S CO AV R M AI SIO PL LA N IA BL S NT E Features Model 3296-LTC is obsolete and not recommended for new designs. Model 3296 is preferred. ■ Low TCR ■ Multiturn / Cermet / Industrial / Sealed ■ 3 terminal styles Applications ■ Chevron seal design ■ Rheostat applications with wiper currents ■ Mounting hardware available (H-117P) ■ RoHS compliant* version available less than 25 microamps ■ Process control instrumentation ■ Power supplies 3296-LTC - 3/8 ” Square Trimpot® Trimming Potentiometer Electrical Characteristics Standard Resistance Range .................................. 2K to 25K ohms (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. Product Dimensions Standard Resistance Table Common Dimensions 6.40 ± 1.32 (.252 ± .052) Resistance (Ohms) 1,000 2,000 5,000 10,000 20,000 25,000 10.03 (.395) 1.52 (.060) 1.27 ± 0.1 (.050 ± .004) .38 MIN. (.015) 2.54 (.100) 2.54 (.100) 9.53 (.375) 1.27 ± 0.1 (.050 ± .004) ADJ. SLOT 2.19 DIA. (.086) .56 WIDE X (.022) .76 DEEP X (.030) .51 ± .03 DIA. (.020 ± .001) 4.83 ± .13 (.190 ± .005) Popular values listed in boldface. Special resistances available. How To Order E T E L O S B O Environmental Characteristics Power Rating (300 volts max.) 70 °C ...................................... 0.5 watt 125 °C ....................................... 0 watt Temperature Range ............................... -55 °C to +150 °C Temperature Coefficient End to End ...................... ±20 ppm/°C Through the Wiper .......... ±50 ppm/°C Seal Test ......................85 °C Fluorinert† Humidity .......MIL-STD-202 Method 103 96 hours (2 % ΔTR, 10 Megohms IR) Vibration ....... 20 G (1 % ΔTR; 1 % ΔVR) Shock ......... 100 G (1 % ΔTR; 1 % ΔVR) Load Life ............. 1,000 hours 0.5 watt @ 70 °C (3 % ΔTR; 3 % or 3 ohms, whichever is greater, CRV) Rotational Life .......................200 cycles (4 % ΔTR; 3 % or 3 ohms, whichever is greater, CRV) Physical Characteristics Torque............................. 3.0 oz-in. max. Mechanical Stops ................. Wiper idles Terminals .......................Solderable pins Weight ....................................... 0.03 oz. Marking........................... Manufacturer’s trademark, resistance code, wiring diagram, date code, manufacturer’s model number and style Wiper .................................50 % ±10 % Flammability ..........................U.L. 94V-0 Standard Packaging .....50 pcs. per tube Adjustment Tool..............................H-90 3296 W - LTC - 103 LF Model 3296P 2.54 (.100) Resistance Code 102 202 502 103 203 253 8.26 ± .64 (.325 ± .025) 2.54 (.100) 3 Style Product Indicator Resistance Code 2 1 Terminations LF = 100 % Tin-plated (RoHS compliant) Blank = 90 % Tin / 10 % Lead-plated (Standard) 2.54 (.100) 5.23 (.206) 3296W 2.41 (.095) 2.54 (.100) Consult factory for other available options. 3 2 2.54 1 (.100) 3296X 2.54 (.100) 3 2 2.54 1 (.100) 2 CCW 2.41 (.095) WIPER 3 1 CW CLOCKWISE DIMENSIONS: TOLERANCES: ± 0.25 (.010) MM (INCHES) EXCEPT WHERE NOTED NOTE: TCR through the wiper applies when 40 % or more of the resistance element is in the circuit. *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. REV. 11/09