Model 3386-OT1 is obsolete and not recommended for new designs. *R oH V SC AV ER OM AI SIO PL LA N IA BL S NT E Features ■ Single-Turn / Cermet / Industrial / Sealed ■ Designed for operational amplifier offset voltage adjustment applications ■ Reduces power supply drift errors ■ Unique center tapped trimming ■ RoHS compliant* version available potentiometer ■ Vertical adjust type available ■ For trimmer applications/processing guidelines, click here 3386-OT1 - 3/8 ” Square Trimpot® Trimming Potentiometer Electrical Characteristics Standard Resistance Range ......................100 ohms to 1 megohm (see standard resistance table) Resistance Tolerance ........... ±20 % std. Absolute Minimum Resistance ....................................... 2 ohms max. Voltage Output Variation........... ±0.25 % Adjustability (VR) .................... ±0.025 % Insulation Resistance @ 500 vdc .......................... 1,000 megohms min. Dielectric Strength Sea Level................................ 900 vac 70,000 Feet ............................ 350 vac Effective Electrical Travel ...... 280 ° nom. Center Tap Resistance ...... 2 ohms max. Center Tap Electrical Center.......... ±5 % Center Tap Dead Band ................6 °±4 ° Standard Resistance Table Product Dimensions 3386P-OT1 4.83 (.190) 5.97 ± .89 (.235 ± .035) Resistance (Ohms) 100 200 500 1,000 2,000 5,000 10,000 20,000 50,000 100,000 200,000 500,000 1,000,000 4.70 ± .51 (.185 ± .030) 2.54 (.100) 3 2 .38 MIN. (.015) 2.54 4 (.100) 2.54 (.100) 2.54 (.100) 1 .51 ± .05 DIA. (.020 ± .002) 9.53 (.375) E T E L O S B O Environmental Characteristics Power Rating 85 °C ...................................... 0.5 watt 150 °C ....................................... 0 watt Temperature Range ... -55 °C to +150 °C Temperature Stability (ΔVR) ....................................... ±0.5 % max. Seal Test ......................85 °C Fluorinert† Humidity .......MIL-STD-202 Method 103 96 hours ±2 % ΔTR 10 Megohms min. Vibration, 30 G ...................... ±1 % ΔTR Shock, 100 G ........................ ±1 % ΔTR Load Life, 1,000 Hours .......... ±3 % ΔTR Rotational Life, 200 cycles .... ±4 % ΔTR Physical Characteristics Mechanical Angle ................. 310 ° nom. Torque............................. 5.0 oz-in. max. Stop Strength ................ 15.0 oz-in. min. Terminals .......................Solderable pins Weight ....................................... 0.03 oz. Marking........................... Manufacturer’s trademark, resistance code, wiring diagram, date code, manufacturer’s model number and style Flammability ..........................U.L. 94V-0 Standard Packaging .......................... 50 pcs. per tube/tray Adjustment Tool..............................H-90 Also see Model 3296-OT1. Popular values listed in boldface. Special resistances available. 9.53 (.375) ADJ. SLOT .76 WIDE (.030) X .76 DEEP (.030) X 3.81 LONG (.150) Shaded areas typically not stocked by distributors and not recommended for new designs. 5.64 (.222) DIMENSIONS: TOLERANCES: ± 0.25 (.010) MM (INCHES) EXCEPT WHERE NOTED CLOCKWISE 2 WIPER 3 1 CCW 4 CW CENTER TAP Suggested Offset Voltage Adjustment Circuit +V 3 R2 - INPUT - R2 + INPUT + OUTPUT R5 2 4 R3 20KΩ R6 10Ω 1 –V R1 20KΩ BOURNS OFFSET TRIMMER How To Order 3386 P - OT1 - 103 LF Model Style Catalog Product Resistance Code REV. 10/11 Resistance Code 101 201 501 102 202 502 103 203 503 104 204 504 105 Terminations LF = 100 % Tin-plated (RoHS compliant) Blank = 90 % Tin / 10 % Lead-plated (Standard) *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. R4 = R5 + R6 OFFSET ADJUSTMENT RANGE = ±V (R3/R6)(R2/R2 + R5) R2 & R4> R6