MODEL 89 1 3/4” Rectangular Multiturn 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%) 200 Vdc or rms not to exceed power rating 100mA or within rated power, whichever is less 0.75 at 85°C derating to 0 at 125°C 2 Ohms 20 1,000 Vrms 1,000 Megohms Essentially infinite 1% or 1 Ohm, whichever is greater ENVIRONMENTAL Seal Temperature Coefficient, Maximum Operating Temperature Range Thermal Shock Moisture Resistance Shock, 6ms Sawtooth Vibration High Temperature Exposure Rotational Life Load Life at 0.5 Watts Resistance to Solder Heat 85°C Fluorinert® (No Leaks) ±100ppm/°C –55°C to +125°C 5 cycles, –55°C to +125°C (1% ∆RT, 1% ∆VR) Ten 24 hour cycles (1% ∆RT, IR 100 Megohms Min.) 100G’s (1% ∆RT, 1% ∆VR) 20G’s, 10 to 2,000 Hz (1% ∆RT, 1% ∆VR) 250 hours at 125°C (2% ∆RT, 2% ∆VR) 200 cycles (3% ∆RT) 1,000 hours at 70°C (2% ∆RT) 260°C for 10 sec. (1% ∆RT) MECHANICAL Mechanical Stops Torque, Starting Maximum Weight, Nominal Clutch Action, both ends 5 oz.-in. (0.035 N-m) .05 oz. (1.4 grams) Fluorinert® is a registered trademark of 3M Company. Specifications subject to change without notice. 1-77 Model 89 LOW PROFILE (Inch/mm) Model 89P and 90P .093 ± .01 Dia. With 2.36 ± 0.25 .025 ± .005 .031 ± .005 Wide X Deep Slot 0.635 ± 0.127 0.787 ± 0.127 Metal Adjustment Screw: Model No. And Resistance Value Marked On This Or Opposite Surface .060 ± .015 1.524 ± 0.381 .75 19.05 .25 6.35 .015 ± .005 0.381 ± 0.254 (1) .015 0.381 Standoff 2 Places .19 4.83 Solderable Terminal Pins (3) .175 4.445 Min. .185 ± .015 (3) 4.669 ± 0.381 (2) .50 12.70 CL .20 5.08 .125 ± .015 3.175 ± 0.381 .050 ± .015 1.270 ± 0.381 .021 ± .003 Dia. 0.533 ± 0.076 Typ. .10 2.54 Model 89P dimensions applicable to all other models except as noted. Model 89W (1) (2) (3) .100 ± .015 2.540 ± 0.381 .20 5.08 .20 5.08 .125 ± .015 3.175 ± 0.381 .50 12.70 Model 89X (1) (2) (3) .30 7.62 0.25 0.635 .050 ± .015 1.270 ± 0.381 .70 17.78 1-78 .10 2.54 Model 89 HIGH PROFILE (Inch/mm) 1 Model 89PH .275 6.985 .03 0.76 Standoff 2 Places (1) .02 0.51 (2) .34 8.64 (3) Circuit Diagram Marked On This Surface Housing: Molded Plastic (All Models) Pin Dimensions Same For 89P And 89PH Model 89WH .275 6.985 .03 0.76 Standoff 2 Places (1) .02 0.51 (2) .34 8.64 (3) Pin Dimensions Same For 89W And 89WH Model 89XH .275 6.985 .03 0.76 (1) Standoff 2 Places (2) .34 8.64 (3) .02 0.51 Pin Dimensions Same For 89X And 89XH 1-79 Model 89 PANEL MOUNT ADAPTER (Inch/mm) Model 89B .91 ± .01 23.11 ± 0.25 Circuit Diagram Marked On This Surface .30 ± .01 7.62 ± 0.25 .375 ± .010 9.525 ± 0.254 .187 ± .010 4.750 ± 0.254 Screwdriver Hole .155 Dia. Min. 2.921 .375 ± .010 9.525 ± 0.254 Material: Molded Plastic 5/16-32 UNEF Thread .187 ± .010 4.750 ± 0.254 STANDARD RESISTANCE VALUES, OHMS 10 20 50 100 200 500 1K 2K 5K 10K 20K 25K 50K 100K 200K 250K 500K 1Meg 2Meg PACKAGING Standard: Boxes Capacity Option: = 100 Units (89P) 50 Units (All other styles) Tubes (Models 89P, 89PH, 89X, 89XH and 90P only.) All units oriented with #1 pin to same side. Magazine Width Height Length Capacity = = = = 0.28” 0.65” 21.5” 25 Units 1-80 Model 89 ORDERING INFORMATION 1 Standard: 89 P R 10K LF RoHS Compliant Product Code - Optional Resistance Value Resistance Prefix Model Series (Use Model 90 to order with transparent housing) Pin Style 89 P R 10K LF TB Option: Pin Style Packaging Option: TB = Tubes (Models 89P, 89PH, 89X, 89H, 90P Only.) Option: 89 P B R 10K LF Pin Style Panel Mount Adapter (Use 89B to order Adapter without Trimmer) 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 = ± .01 inches (.25mm) Angular = ± 2 degrees CW 1-81 Model 89