MODEL 91 1 3/8" Diameter Single Turn 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, Nominal Dielectric Strength Insulation Resistance, Minimum Resolution Contact Resistance Variation, Maximum 10 to 2Meg 20% 250 Vdc or rms not to exceed power rating 100mA or within rated power, whichever is less 0.5 at 70C derating to 0 at 125C 2 Ohms 174 500 Vrms 1,000 Megohms Essentially infinite 1% or 1 Ohm, whichever is greater ENVIRONMENTAL 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 100ppm/C -55C to +125C 5 cycles, -55C to +125C (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 125C (2% RT, 2% VR) 200 cycles (3% RT) 1,000 hours at 70C (2% RT) 260C for 10 sec. (1% RT) MECHANICAL Mechanical Stops Stop Strength Torque, Starting Maximum Weight, Nominal Solid 12 oz.-in. (0.085 N-m) 5oz.-in. (0.042 N-m) .03 oz. (0.85 grams) Specifications subject to change without notice. 1-83 Model 91 TOP ADJUSTMENT (Inch/mm) Model 91A .20 5.08 .375 9.525 Max. Dia. For Blade Screwdriver Arrow Indicates Slider Position. Electrical Adjustments May Be Made With A Phillips Or Blade Screwdriver And Is Fingertip Adjustable. .050 .034 Wide X Deep Slot: 1.270 0.864 .15 For Phillips 3.81 Screwdriver .20 5.08 (2) (1) .10 2.54 .20 5.08 .20 5.08 .020 .005 Dia. 0.508 0.127 Solderable Terminals .20 5.08 .10 2.54 .10 2.54 .25 6.35 Max. .18 4.57 Min. (1) (2) .344 8.738 .10 2.54 .25 6.35 Max. .18 4.57 Min. Model 91C (3) Resistance Value Marked On This Surface Standoffs (2) (3) (1) (2) Model Number Marked On This Surface .18 4.57 Min. Model 91B (3) .385 9.779 Max. .172 4.369 .156 3.962 .10 2.54 Model 91E .25 6.35 Max. (2) .18 Min. 4.57 .20 5.08 .40 10.2 (3) (1) .10 2.54 .20 5.08 .015 .005 0.381 0.127 True Radius (Typ.) 1-84 Model 91 SIDE ADJUSTMENT (Inch/mm) 1 Model 91T .345 8.763 Max. (2) (3) .10 2.54 (1) .18 Min. 4.57 .20 5.08 .10 2.54 .40 10.2 Max. Model 91V (2) (3) .172 4.369 (1) .18 Min. 4.57 .344 8.738 .156 3.962 .25 6.35 Max. Model 91W (1) .20 5.08 (2) (3) .10 2.54 .18 Min. 4.57 .345 8.763 Max. Model 91X (1) .20 5.08 (2) (3) .10 2.54 .18 Min. 4.57 1-85 .10 2.54 Model 91 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 = 100 Units ORDERING INFORMATION Standard: 91 A R 10K LF Model Series Pin Style RoHS Compliant Product Code - Optional Resistance Value Resistance Prefix 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 1-86 Model 91 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: BI Technologies: 91VR50KLF TT Electronics: 91AR100K 91AR10 91AR1MEG 91AR2MEG 91VR50K 91XR50KLF 91CR50LF 91BR10KLF 91CR10KLF 91ER10KLF 91AR10KLF 91WR20LF 91ER1KLF 91AR10LF 91TR20KLF 91VR20KLF 91WR20KLF 91AR20LF 91TR500KLF 91XR500KLF 91BR500KLF 91VR500KLF 91WR500KLF 91CR500KLF 91AR500KLF 91ER500KLF 91AR100LF 91ER100LF 91CR100LF 91BR100LF 91WR1KLF 91AR1KLF 91TR200LF 91VR200LF 91WR200LF 91VR100KLF 91TR100KLF 91XR100KLF 91BR100KLF 91ER100KLF 91CR100KLF 91WR100KLF 91AR100KLF 91ER20LF 91XR500LF 91CR5KLF 91WR2KLF 91CR20LF 91WR5KLF 91TR50KLF 91WR50KLF 91AR5KLF 91WR25KLF 91TR25KLF 91VR25KLF 91WR100LF 91VR100LF 91TR100LF 91XR200LF 91CR2MEGLF 91ER2MEGLF 91WR2MEGLF 91BR2MEGLF 91VR2MEGLF 91TR2MEGLF 91XR2MEGLF 91CR2KLF 91TR1KLF 91WR10KLF 91VR10KLF 91TR10KLF 91WR50LF 91XR20KLF 91AR50LF 91WR500LF 91VR500LF 91TR500LF 91CR1KLF 91XR5KLF 91AR200KLF 91TR200KLF 91ER200KLF 91CR200KLF 91WR200KLF 91XR200KLF 91VR200KLF 91BR200KLF 91BR5KLF 91VR2KLF 91VR1KLF 91TR50LF 91BR500LF 91CR500LF 91AR500LF 91ER500LF 91BR1MEGLF 91VR1MEGLF 91TR1MEGLF 91ER1MEGLF 91XR1MEGLF