Accutrim 1202 Styles Vishay Foil Resistors Bulk Metal Foil Ultra High Technology Precision Trimming Potentiometers, 1 1 / Rectilinear, RJ12 Style, Designed to Meet or Exceed The Requirements 4 of MIL-PRF-22097, Char. F with Smooth and Unidirectional Output FEATURES Temperature coefficient of resistance (TCR): (3) 10 ppm/C maximum (- 55 C to + 150 C ref. at + 25 C) (4) through the wiper 25 ppm/C A smooth and unidirectional resistance with leadscrew adjustment Load life stability: 0.1 % typical R, 0.5 % maximum R under full rated power at + 85 C** for 2000 h Settability: 0.05 % typical 0.1 % maximum Setting stability: 0.1 % typical 0.5 % maximum, SS Power rating: 0.5 W at + 85 C INTRODUCTION Resistance range: 2 to 20 k Vishay Foil precision trimmers have the Bulk Metal Foil O-ring prevents ingress of fluids during any board resistive element which possesses a unique inherent cleaning operation temperature and load life stability. Plus, their advanced Electrostatic discharge (ESD) up to 25 000 V virtually back lash-free adjustment mechanism makes them Terminal finish: gold plated (tin/lead finish is available on easy to set quickly and accurately and keeps the setting request see notes at figures 1 and 2) exactly on target. BULK METAL WIREWOUND CERMET FOIL Wiper Travel Wiper Travel Wiper Travel TABLE 3 - 1202 (RJ12) SERIES TABLE 1 - MODEL SELECTION ELECTRICAL SPECIFICATIONS POWER AVERAGE TERMINATION RATING NO. OF Temperature Coefficient of Resistance (TCR), 50 and up: MODEL WEIGHT STYLE at + 85 C TURNS (3): End-to-end 10 ppm/C (- 55 C to + 150 C, ref. + 25 C) (g) AMBIENT 2 , 5 , 10 , 20 20 ppm/C (- 55 C to + 150 C, P-In line PC pins 2.5 ref. + 25 C) (4) (1) Through the wiper : 25 ppm/C (- 55 C to + 150 C, Y-staggered PC pins 2.5 ref. + 25 C) L-flexible wire leads 3.3 1202 0.5 W 25 2 Stability: LB-flexible wire leads Load life at 2000 h, under full rated power of 0.5 W at + 85 C with bushings 5.1 0.1 % typical R 0.5 % maximum R (panel mounted) Load life at 10 000 h, under full rated power of 0.5 W at + 85 C 0.1 % typical R 1.0 % maximum R Note (5) See Figures 1 and 2 Power Rating : 0.5 W at + 85 C Settability: 0.05 % typical 0.1 % maximum Setting Stability: 0.1 % typical 0.5 % maximum TABLE 2 - VALUES VS. TOLERANCES Contact Resistance variation - CRV (noise): 3 typical 10 maximum STANDARD RESISTANCE STANDARD TOLERANCES VALUES (in ) Hop-off: 0.25 % typical 1.0 % maximum High-Frequency Operation to 100 MHz: Rise time: 10 ns at 1 k (2) 2, 5, 10 10 %, 20 % Inductance: 0.08 H typical Capacitance: 0.5 pF typical Operating Temperature Range: - 55 C to + 150 C 20, 50, 100, 200, 250, 500, 5 %, 10 % 1K, 2K, 5K, 10K, 20K Note Refer to page 4 for footnotes * Pb containing terminations are not RoHS compliant, exemptions may apply ** See a definition of typical in the VPG glossary at the link Accutrim 1202 Styles Vishay Foil Resistors TABLE 4 - MECHANICAL SPECIFICATIONS Adjustment Turns 25 2 Case Material Glass fortified diallyl-phthalate (DAP) black Mechanical Stops Wiper idles - no discontinuity Shaft Torque 8 oz. in. maximum 3 oz. in. typical Internal Terminations All welded - no flux Backlash 0.05 % typical FIGURE 1 - SCHEMATIC AND DIMENSIONS FOR PIN STYLES in Inches (Millimeters) 1202P 0.125 (3.18 mm) A (1) (In-Line Pins) 0.093 (2.36 mm) DIA (A) 0.070 (1.78 mm) C 0.195 2 Mtg. Holes (4.95 mm) A 1.000 (25.40 mm) C Slot 0.025 (0.64 mm) W x 0.031 (0.79 mm) DP (A) 0.325 0.235 0.125 (8.26 mm) A (5.97 mm) C (3.18 mm) A 0.500 (12.70 mm) C 0.028 (0.71 mm) DIA (B) 3 Pin Type Leads 0.700 0.260 (17.78 mm) C (6.60 mm) C 0.900 (22.86 mm) C 2 CW 0.125 213 (3.18 mm) DIA (A) 1 3 Schematic 1.250 (31.75 mm) C 0.125 (3.18 mm) A 1202Y (1) (Staggered Pins) 0.093 (2.36 mm) DIA (A) 0.070 (1.78 mm) C 0.195 2 Mtg. Holes (4.95 mm) A 1.000 (25.40 mm) C Slot 0.025 (0.64 mm) W x 0.031 (0.79 mm) DP (A) 0.325 0.235 0.125 (8.26 mm) A (5.97 mm) C (3.18 mm) A 0.500 (12.70 mm) C 0.028 (0.71 mm) DIA (B) 3 Pin Type Leads 0.300 0.265 (7.62 mm) C (6.73 mm) C 0.100 (2.54 mm) C 0.700 (17.78 mm) C 0.125 1 3 2 1 3 (3.18 mm) DIA (A) CW 2 1.250 (31.75 mm) C Schematic TOLERANCES: STANDARD MARKING ILLUSTRATION: A = 0.005 (0.13 mm) Model No., Resistance Value, B = 0.003 (0.08 mm) Tolerance, TCR C = 0.010 (0.25 mm) VFR Date Code 1 3 Note (1) CW Pin leads are gold plated nickel which are solderable or weldable. 2 Schematic www.vishayfoilresistors.com For any questions, contact: foil vishaypg.com Document Number: 63055 2 Revision: 11-Jun-13