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| WSR Vishay Dale Power Metal Strip(R) Resistors, Low Value, Surface Mount FEATURES * Molded high temperature encapsulation * Ideal for all types of current sensing, voltage division and pulse applications including switching and linear power supplies, instruments, power amplifiers * Proprietary processing technique produces extremely low resistance values * All welded construction * Solid metal Nickel-chrome or Manganese-copper alloy resistive element * 60/40 tin/lead copper terminations * Very low inductance 0.5nH to 5nH * Excellent frequency response * Low thermal EMF STANDARD ELECTRICAL SPECIFICATIONS MODEL SIZE POWER RATING P70C W 2.0 3.0* RESISTANCE RANGE 0.5% 0.01 - 1.0 0.01 - 0.2 1.0% 0.001 - 1.0 0.001 - 0.2 WSR2 WSR3 4527 4527 *The WSR3 requires a minimum of 1050 sq. mil. circuit traces connecting to the recommended solder pad * Part Marking: DALE, Model, Value, Tolerance, Date Code TECHNICAL SPECIFICATIONS PARAMETER Temperature Coefficient Dielectric Withstanding Voltage Insulation Resistance Operating Temperature Range Maximum Working Voltage Weight/1000 pieces (typical) UNIT ppm/C VAC C V g WSR2 & WSR3 0.005 - 0.0099 = 110 0.010 - 1.0 = 75 > 500 > 10 9 - 65/+ 275 (P x R) 440 1/2 ORDERING INFORMATION WSR2 MODEL 0.01 RESISTANCE 1.0% TOLERANCE % R86 PACKAGING B43 = Bulk Pack R86 = Tape and Reel www.vishay.com 102 For technical questions, contact ww2bresistors@vishay.com Document Number 30101 Revision 08-Feb-02 WSR Power Metal Strip(R) Resistors, Low Value, Surface Mount DIMENSIONS W H W1 T L l a b Vishay Dale MODEL L WSR2 WSR3 DIMENSIONS in inches [millimeters] H T W W1 0.455 0.032 0.095 0.005 0.100 0.010 0.275 0.005 0.215 0.005 [11.56 0.813] [2.41 0.127] [2.54 0.254] [6.98 0.127] [5.46 0.127] MODEL SOLDER PAD DIMENSIONS in inches [millimeters] a b 0.230 [5.84] l 0.205 [5.21] WSR2 WSR3 0.155 [3.94] Rated Power in % 120 100 80 60 40 20 0 -65 -25 25 75 70 125 Derating 175 225 275 Ambient Temperature C PERFORMANCE TEST LIMITS TEST Thermal Shock Short Time Overload Low Temperature Storage High Temperature Exposure Bias Humidity Mechanical Shock Vibration Load Life Resistance to Solder Heat Moisture Resistance CONDITIONS OF TEST - 55C to + 150C, 1000 cycles, 15 minutes at each extreme WSR2: 5 x rated power for 5 sec. WSR3: 4 x rated power for 5 sec. - 65C for 24 hours 1000 hours @ + 275C + 85C, 85% RH, 10% Bias, 1000 hours 100g's for 6 milliseconds, 5 pulses Frequency varied 10 to 2000Hz in one minute, 3 directions, 12 hours 1000 hours @ rated power, + 70C, 1.5 hours "ON", 0.5 hours "OFF" + 260C Solder, 10 -12 second dwell, 25mm/second emergence MIL-STD-202 Method 106, 0% power, 7a and 7b not required WSR2 (0.5% + 0.0005) R (0.5% + 0.0005) R (0.5% + 0.0005) R (1.0% + 0.0005) R (0.5% + 0.0005) R (0.5% + 0.0005) R (0.5% + 0.0005) R (1.0% + 0.0005) R (0.5% + 0.0005) R (0.5% + 0.0005) R WSR3 (0.5% + 0.0005) R (2.0% + 0.0005) R (0.5% + 0.0005) R (1.0% + 0.0005) R (0.5% + 0.0005) R (0.5% + 0.0005) R (0.5% + 0.0005) R (2.0% + 0.0005) R (0.5% + 0.0005) R (0.5% + 0.0005) R PACKAGING MODEL TAPE WIDTH WSR2 & WSR3 24mm/Embossed Plastic DIAMETER 330mm/13" REEL PIECES/REEL 1500 CODE R86 Embossed Carrier Tape per EIA-481-2. Document Number 30101 Revision 08-Feb-02 For technical questions, contact ww2bresistors@vishay.com www.vishay.com 103 |
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