MODEL 44 1 4mm Square Multiturn Surface Mount Cermet Trimming Potentiometer ELECTRICAL Standard Resistance Range, Ohms Standard Resistance Tolerance Input Voltage, Maximum Slider Current, Maximum Power Rating, Watts End Resistance, Maximum Actual Electrical Travel, Turns, Nominal Dielectric Strength Insulation Resistance, Minimum Resolution Contact Resistance Variation, Maximum 10 to 2Meg ±10% (<100 Ohms = ±20%) 300 Vdc or rms not to exceed power rating 100mA or within rated power, whichever is less 0.25 at 85°C derating to 0 at 150°C 1% or 2 Ohms, whichever is greater 9 600Vrms 1,000 Megohms Essentially infinite 1% or 3 Ohms, whichever is greater ENVIRONMENTAL Seal Temperature Coefficient, Maximum Operating Temperature Range Thermal Shock Moisture Resistance Shock, 6ms Sawtooth Vibration Rotational Life Load Life at 0.25 Watts Resistance to Solder Heat Temperature Exposure, Maximum Solderability 85°C Fluorinert® (No Leaks) ±100ppm/°C (<100 Ohms = ±250ppm/°C) –65°C to +150°C 5 cycles, –65°C to +150°C (2% ∆RT, 1% ∆VR) Ten 24 hour cycles (2% ∆RT, IR 10 Megohms Min.) 100G’s (1% ∆RT, 1% ∆VR) 20G’s, 10 to 2,000 Hz (1% ∆RT, 1% ∆VR) 200 cycles (3% ∆RT, 1% CRV) 1,000 hours at 85°C (2% ∆RT, 1% CRV) 260°C for 10 sec. (1% ∆RT) 215°C for 3 min. (1% ∆RT) Per MIL-STD-202, Method 208 MECHANICAL Mechanical Stops Torque, Starting Maximum Weight, Nominal Clutch action, both ends 3 oz.-in. (0.021 N-m) .01 oz. (0.3 grams) Fluorinert® is a registered trademark of 3M Company. Specifications subject to change without notice. 1-21 Model 44 TOP ADJUSTMENT (Inch/mm) SIDE ADJUSTMENT (Inch/mm) Model 44W Model 44J Solderable .008±.003 3X Terminals .203±.076 .100 2.54 .025 3X .63 (1) (2) 3X .025 .63 Solderable .008±.003 3X Terminals .203±.076 (1) .190 4.83 .190 4.83 (2) (3) .100 2.54 .061 1.56 .113 2.87 .113 2.87 .200 5.08 Metal Adjustment Screw .056/1.42 Dia. with .020/.51 wide x .015/.38 deep slot .209 5.31 .061 1.56 (3) Metal Adjustment Screw .056/1.42 Dia. with .020/.51 wide x .015/.38 deep slot .022 .55 .198 5.03 .180 4.57 .138 .154 3.51 3.91 .147 3.73 .063 1.60 .039 3X .99 3X .032 .81 SOLDER PAD LAYOUT (Inch/mm) Model 44G .051 2X 1.30 .114 2.90 .079 2.01 3X Model 44W 3X (1) .025 .63 .100 2.54 .100 2.54 .060 1.52 .157 3.99 .120 3.05 .079 3X 2.01 2X .090 2.29 .051 1.30 .061 1.56 Metal Adjustment Screw .056/1.42 Dia. with .020/.51 wide x .015/.38 deep slot Model 44J .079 2.01 (3) .229 5.82 .180 4.57 .154 3.91 .205 5.21 3X Model 44G .190 4.83 (2) .051 1.30 .079 2.01 2X .008±.003 3X .203±.076 Solderable Terminals .090 2.29 .051 1.30 .024 .61 STANDARD RESISTANCE VALUES, OHMS 10 20 50 100 200 500 1K 2K 5K 10K 20K 25K 1-22 50K 100K 200K 250K 500K 1Meg 2Meg Model 44 FEATURES AND BENEFITS 1 • Space saving SMD design for the most compact board designs • Sealed to withstand aggressive water wash • Long life - set and forget construction • BI quality and reliability • Available in top and side adjustment versions, J-Hook or gull wing termination PACKAGING Standard: Embossed Tape & Reel All units oriented with #1 pin to the right of the direction of feed. Pin Style Width Sprocket Capacity Diameter Tape Reel Option: = = = = 13” Reel G&J W 12 mm 16 mm 4 mm Pitch 4 mm Pitch 1,000 Units 1,000 Units 13” (330.2 mm) 7” Reel G&J W 12 mm 16 mm 4 mm Pitch 4 mm Pitch 500 Units 250 Units 7” (178 mm) Anti-Static Tubes All units oriented with #1 pin to same side. Magazine Capacity = 100 Units ORDERING INFORMATION 44 G R 10K LF XX* Model Series Pin Style Packaging Option: T7 = 7" Tape & Reel T13 = 13" Tape & Reel TB = Tubes RoHS Compliant Product Code - optional Resistance Value Resistance Prefix * Packaging option must be specified. CIRCUIT DIAGRAM NOTES Metric equivalents, based on 1 inch = 25.4mm are rounded to the same number of significant figures as in the original English units and are provided for general information only. (2) (1) (3) INCH mm Tolerances unless otherwise specified: Linear = ± .012 inches (.30mm) Angular = ± 2 degrees CW 1-23 Model 44