Features n For trimmer applications/processing n Multiturn / Wirewound / Sealed guidelines, click here n Listed on the QPL for style RT22 per MIL-R-27208 and RTR22 per High-Rel MIL-R-39015 n Panel mount option available n RoHS compliant* 3250 - 1/2 Square Trimpot Trimming Potentiometer Electrical Characteristics Product Dimensions How To Order Standard Resistance Range 3250P 3250 L - 1 - 103 M Common Dimensions .................................. 10 to 50K ohms Model (Pin Styles) (see standard resistance table) Style 1.98 DIA. THRU Resistance Tolerance ............. 5 % std. (.078) (2 PLACES) Standard or Modified (tighter tolerance available) Product Indicator ADJ. SLOT Absolute Minimum Resistance 1.91 .25 -1 = Standard Product ..........................0.1 % or 1 ohm max. DIA. 13.21 (.075 .01) TYP. (.520) Resistance Code (whichever is greater) .64 X WIDE (.025) Noise .....................100 ohms ENR max. 12.7 Optional Suffix Letter .51 TYP. X DEEP Resolution ........... See Resistance Table (.500) M = Panel Mount - Factory Installed .89 (.020) Insulation Resistance ...............500 vdc. (.035) (Only Available for L, W & X Terminal TYP. Styles) 1,000 megohms min. 2.54 (.100) Dielectric Strength Consult factory for other available options. 1.78 TYP. 2.54 Sea Level............................. 1,000 vac (.070) 5.59 (.100) .71 .08 80,000 Feet ............................ 400 vac (.220) DIA. TYP. 6.35 (.028 .003) Adjustment Travel .............25 turns nom. Standard Resistance Table (.250) 3 12.7 Nominal Environmental Characteristics (.500) 2 Resistance Resistance Resolution TYP. 1 Power Rating 85 C ...............1.0 watt (Ohms) Code (Percent) Power Rating 150 C ................0 watt 10 100 1.30 2.54 13.33 .64 (.100) 20 200 1.00 Temperature Range ...-65 C to +150 C (.525 .025) 6.35 50 500 0.80 Temperature Coefficient ..... 50 ppm/C (.250) 100 101 0.90 Seal Test ...................... 85 C Fluorinert 3250W 200 201 0.70 2.79 (pin styles only) 500 501 0.60 3 2 (.110) 1,000 102 0.40 Humidity .......MIL-STD-202 Method 106 1 2,000 202 0.30 (2 % DTR 100 Megohms IR) 5,000 502 0.25 Vibration ......................................... 30 G 10,000 103 0.19 6.35 20,000 203 0.16 (1 % DTR 0.5 % + resolution DVR) 2.54 2.54 (.250) 25,000 253 0.14 Shock ........................................... 100 G (.100) (.100) 50,000 503 0.13 (1 % DTR 0.5 % + resolution DVR) Popular values listed in boldface. Special 3250W-66 Load Life 2.79 resistances available. 3 ............1,000 hours 1.0 watt 85 C 2 (.110) 1 (2 % DTR 500 ohms ENR) RED WIPER Rotational Life .......................200 cycles 2 (2 % DTR 500 ohms ENR) 6.35 2.54 2.54 (.250) YELLOW GREEN 1 3 (.100) (.100) CW Physical Characteristics CCW CLOCKWISE 3250L Torque .............................5.0 oz-in. max. Mechanical Stops .................Wiper idles MM DIMENSIONS: 13.21 (INCHES) Terminals ..Solderable printed circuit pins TYP. (.520) 0.25 Flexible leads (7 strands of 30 AWG) TOLERANCES: EXCEPT WHERE NOTED (.010) Weight ....................................... 0.06 oz. 2.36 Machine Screw Mounting DIA. THRU (.093) (2 PLACES) Torque ..........................12 oz-in. max. Marking .........Manufacturers trademark, .89 resistance code, terminal numbers, TYP. 12.70 (.035) date code, manufacturers model TYP. (.500) WARNING Cancer and number and style 1.40 Reproductive Harm Wiper ...............50 % (Actual TR) 10 % (.055) 152.4 LENGTH MIN. www.P65Warnings.ca.gov Flammability ..........................U.L. 94V-0 4.75 (6.00) (.187) Standard Packaging P&W Styles ...............25 pcs. per tube REV. 08/19 1.52 12.7 * RoHS Directive 2015/863, Mar. 31, 2015 and Annex L Style ........................25 pcs. per bag TYP. (.060) (.500) Trimpot is a trademark of Bourns, Inc. Adjustment Tool ..............................H-90 Fluorinert is a registered trademark of 3M Co. 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. 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