T18500KT10 Vishay

T18 Vishay Sfernice 3/4 Rectangular Multi-Turn Cermet Trimmer FEATURES Industrial Grade 0.50 Watt at 70 C RoHS COMPLIANT MIL-R-22097 Tests according to CECC 41 000 Fine pitch screw for outstanding setting ability High performance plastic case Metal collector improves Large size saddle to power dissipation prevent back-lash Thermoplast bottom protects Multi-fingered wiper for track form mechanical stresses low contact resistance due to sealing resin Connections soldered to track DIMENSIONS in millimeters SHAFT T18 12 3 0.2 0.8 4.7 0.2 1.5 0.5* 0.6 6.4 0.2 4.8 0.2 0.6 Base level 2.5 19 0.5 2.54 0.2* 4.5 0.5 3.15 0.5* 5.1 0.2* 7.6 0.2* * to be measured at base level CIRCUIT DIAGRAM a c (1) (3) b cw (2) Tolerances unless otherwise specified 0.5 Document Number: 51027 For technical questions, contact: sfer vishay.com www.vishay.com Revision: 25-Apr-06 See also: Application notes 79T18 3/4 Rectangular Multi-Turn Cermet Trimmer Vishay Sfernice ELECTRICAL SPECIFICATIONS Resistive Element cermet Electrical Travel 15 turns 1 Resistance Range 10 to 2.2 M Standard series E3 1 - 2.2 - 4.7 and 1 - 2 - 5 Tolerance Standard 10 % On Request 5 % Power Rating Linear 0.50 W at + 70 C Logarithmic not applicable Temperature Coefficient See Standard Resistance Element Table Limiting Element Voltage (Linear Law) 250 V Contact Resistance Variation 2 % Rn or 1 End Resistance (Typical) 1 Dielectric Strength (RMS) 1000 V 6 Insulation Resistance (500VDC) 10 M MECHANICAL SPECIFICATIONS POWER RATING CHART Mechanical Travel 18 turns 5 0.75 Operating Torque (max. Ncm) 2 End Stop Torque clutch action Unit Weight (max. g) 1 0.50 Wiper (actual travel) positioned at approx. 50 % ENVIRONMENTAL SPECIFICATIONS 0.25 Temperature Range - 55 C to + 125 C Climatic Category 55/125/56 Sealing fully sealed 0 0 20 40 60 70 80 100 125 140 container IP67 AMBIENT TEMPERATURE IN DEGREES CELSIUS PERFORMANCE TYPICAL VALUES AND DRIFTS TESTS CONDITIONS RT R1-2 (%) (%) RT R1-2 1 % (3 % + 5 ) 1000 hours at rated power Load Life 90 /30 - ambient temp. 70 C Contact res. variation: < 3 % Rn Phase A dry heat 125 C Phase B damp heat Climatic Sequence 0.5 % 1 % Phase C cold - 55 C Phase D damp heat 5 cycles 0.5 % 1 % Long Term Damp Heat 56 days Dielectric strength: 1000 V RMS 4 Insulation resistance: > 10 M 5 cycles V1-2 Rapid Temperature Change 0.5 % 1 % - 55 C at + 125 C V1-3 50 g at 11m secs Shock 3 successive shocks 0.2 % 0.3 % in 3 directions 10 - 55 Hz V1-2 Vibration 0.75 mm or 10 g 0.2 % 0.3 % V1-3 during 6 hours 2 % Rotational Life 200 cycles Contact res. variation: < 2 % Rn www.vishay.com For technical questions, contact: sfer vishay.com Document Number: 51027 80 See also: Application notes Revision: 25-Apr-06 POWER IN WATT