MODEL 25 1 1/4" Square Single Turn Cermet Trimming Potentiometer ELECTRICAL Standard Resistance Range, Ohms Standard Resistance Tolerance Input Voltage, 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% (10% available) 250 Vdc or rms not to exceed power rating 0.5 at 70C derating to 0 at 125C 1% or 3 Ohms, whichever is greater 210 500Vrms 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 85C Fluorinert(R) (No Leaks) 100ppm/C (<200 ohms = 250ppm/C) -55C to +125C 5 cycles, -55C to +125C (2% RT, 2% VR) Ten 24 hour cycles (3% RT) 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) 100 cycles (5% RT) 1,000 hours at 70C (3% RT, 3% VR) MECHANICAL Mechanical Stops Stop Strength, Minimum Torque, Maximum Weight, Nominal Solid 6 oz.-in. (500 gr-cm) 3 oz.-in. (200 gr-cm) .01 oz. (0.4 grams) Fluorinert(R) is a registered trademark of 3M Company. Specifications subject to change without notice. 1-25 Model 25 TOP ADJUSTMENT Model 25P .27 .01 6.8 0.3 .12 .01 3.0 0.2 .22 .02 5.5 0.5 .20 .04 5.0 1.0 .04 .01 0.9 0.3 (2) .27 .02 6.8 0.4 (3) .02 0.5 Max. (1) .10 .01 2.5 0.3 Solderable Terminals Leads (Typical 3 Places) .01 .02 .004 Wide x Thick 0.3 0.5 0.10 Adjustment Slot .09 Long x 2.2 .20 .01 5.0 0.3 .10 2.5 .10 2.5 +.004 -.000 .05 Wide x Deep Slot +.010 1.2 0.5 -0.00 .02 Note: Model 25P Dimensions Applicable To All Models Except As Noted Model 25W .08 .01 2.0 0.3 (2) (3) (1) .10 .01 2.5 0.3 Model 25U .13 .01 3.4 0.3 .10 .01 2.5 0.3 .10 2.5 .10 2.5 (3) (2) (1) .20 .01 5.0 0.3 STANDARD RESISTANCE VALUES, OHMS 10 20 50 100 200 500 1K 2K 5K 10K 20K 50K 100K 200K 500K 1-26 1Meg 2Meg Model 25 SIDE ADJUSTMENT 1 25S 25X 25V 25RS 25RX 25RV .27 .01 6.8 0.3 .27 .01 6.8 0.3 25S 25X 25RS 25RX .28 Max. 7.0 .02 Max. 0.5 .20 .02 5.2 0.4 .32 .02 8.2 0.4 .17 .02 4.4 0.4 .20 .04 5.0 1.0 .02 0.5 (1) (2) (3) (3) (2) (1) Model 25S and 25RS 25S 25S .20 .01 5.0 0.3 .20 .01 5.0 0.3 (1) .11 .01 2.9 0.3 (3) (3) (2) (2) .10 .01 2.5 0.3 .10 2.5 .10 .01 2.5 0.3 .10 2.5 .10 2.5 Model 25X and 25RX Note: Models 25S And 25RS Dimensions Applicable To All Side Adjustment Models Except As Noted. .10 2.5 25X 25RX .11 .01 2.9 0.3 (2) .11 .01 2.9 0.3 (2) (3) (3) (1) .11 .01 2.9 0.3 (1) (1) .10 .01 2.5 0.3 .10 .01 2.5 0.3 25V Model 25V and 25RV 25V 25RV .11 .01 2.9 0.3 (1) (2) 25RV (3) .11 .01 2.9 0.3 (3) (2) (1) 1-27 Model 25 PACKAGING Standard: Boxes Capacity Option: Option: = 100 units Tubes (Available only for 25U and 25V) All units oriented with #1 pin to same side Pin Style U Magazine Width = .33" (8.4 mm) Height = 0.59" (15 mm) Length = 19.7" (500 mm) Capacity = 70 units V .31" (7.9 mm) 0.71" (18 mm) 19.7 (500 mm) 70 units Tape & Reel, Ammo Pack (Available only for 25U and 25V) All units oriented with #3 pin towards direction of feed Tape Reel Ammo Seat Plane to Centerline of Sprocket Hole Width Sprocket Capacity Diameter Tape Fold Box = = = = = = = .71" (18 mm) 18 mm Single Hole .50" spacing 1,000 units 14" (363 mm) 12" 2.0" x 13.4" x 13.8" (50mm x 340mm x 350mm) ORDERING INFORMATION 25 P R 10K Standard: Model Series Pin Style Resistance Value Resistance Prefix 25 U R 10K XX Option: Pin Style Packaging Option AP = Ammo Pack TR = Tape & Reel TB = Tubes CIRCUIT DIAGRAM NOTES (2) (1) English equivalents are based on 1 inch = 25.4mm and are provided for general information only. (3) INCH mm Tolerances unless otherwise specified: Linear = 0.3 mm (.01 in.) CW 1-28 Model 25