LVR Vishay Dale Wirewound Resistors, Precision Power, Low Value, Commercial, Axial Lead FEATURES Ideal for all types of current sensing applications including switching and linear power supplies, instruments and power amplifiers Proprietary processing technique produces extremely low resistance values Excellent load life stability Low temperature coefficient Low inductance Cooler operation for high power to size ratio MIL-PRF-49465 qualified, type RLV resistors can be found at: www.vishay.com/doc 30283 Compliant to RoHS Directive 2002/95/EC STANDARD ELECTRICAL SPECIFICATIONS (1) GLOBAL HISTORICAL POWER RATING RESISTANCE RANGE TOLERANCE TECHNOLOGY MODEL MODEL P W % 25 C (2) LVR01 LVR-1 1 0.01 to 0.1 1, 3, 5, 10 Metal strip LVR03 LVR-3 3 0.005 to 0.2 1, 3, 5, 10 Metal strip LVR05 LVR-5 5 0.005 to 0.3 1, 3, 5, 10 Metal strip LVR10 LVR-10 10 0.01 to 0.8 1, 3, 5, 10 Coil spacewound Notes (1) Resistance is measured 3/8 9.52 mm from the body of the resistor, or at 1.183 30.05 mm , 1.315 33.40 mm , 1.675 42.545 mm or 2.575 65.405 mm spacing for the LVR01, LVR03, LVR05 and LVR10 respectively. (2) LVR01: Standard resistance values are 0.01 , 0.015 , 0.02 , 0.025 , 0.03 , 0.033 , 0.04 , 0.05 , 0.051 , 0.06 , 0.068 , 0.07 , 0.08 , 0.09 and 0.1 with 1 % tolerance. Other resistance values may be available upon request. TECHNICAL SPECIFICATIONS PARAMETER UNIT LVR01 LVR03 LVR05 LVR10 Operating Temperature Range C - 65 to + 175 - 65 to + 275 Dielectric Withstanding Voltage V 1000 1000 1000 1000 RMS Insulation Resistance 10 000 M minimum dry Short Time Overload - 5 x rated power for 5 s 10 x rated power for 5 s Terminal Strength (minimum) lb 5 10 10 10 Temperature Coefficient ppm/C See TCR vs. Resistance Value chart 1/2 Maximum Working Voltage V (P x R) Weight (maximum) g 0.5 2 5 11 GLOBAL PART NUMBER INFORMATION Global Part Numbering example: LVR055L000FS73 L V R 055 L 000 FS 7 3 GLOBAL MODEL VALUE TOLERANCE PACKAGING SPECIAL (Dash Number) LVR01 R = Decimal D = 0.5 % E12 = Lead (Pb)-free bulk (up to 3 digits) LVR03 L = m F = 1.0 % E03 = Lead (Pb)-free lacer pack (LVR10) From 1 to 999 LVR05 (values < 0.010 ) G = 2.0 % E70 = Lead (Pb)-free, tape/reel 1000 pieces (LVR01, 03) as applicable LVR10 R1500 = 0.15 H = 3.0 % E73 = Lead (Pb)-free, tape/reel 500 pieces 7L000 = 0.007 J = 5.0 % B12 = Tin/lead bulk K = 10.0 % L03 = Tin/lead lacer pack (LVR10) S70 = Tin/lead, tape/reel 1000 pieces (LVR01, 03) S73 = Tin/lead, tape/reel 500 pieces Historical Part Numbering example: LVR-5 0.005 1 % S73 LVR-5 0.005 1 % S73 HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING * Pb containing terminations are not RoHS compliant, exemptions may apply ** Please see document Vishay Material Category Policy: www.vishay.com/doc 99902 Document Number: 30206 For technical questions, contact: ww2aresistors vishay.com www.vishay.com Revision: 21-Feb-11 1LVR Wirewound Resistors, Precision Power, Low Value, Commercial, Vishay Dale Axial Lead DIMENSIONS in inches millimeters DIMENSIONS in inches millimeters MODEL A B C (1) 1.50 38.10 0.010 0.254 0.010 0.254 0.002 0.051 A minimum LVR01 0.427 10.85 0.115 2.92 0.020 0.508 LVR03 0.560 14.22 0.205 5.21 0.032 0.813 LVR05 0.925 23.50 0.330 8.38 0.040 1.02 C B LVR10 1.828 46.43 0.392 9.96 0.040 1.02 Note (1) On some standard reel pack methods, the leads may be trimmed to a shorter length than shown MATERIAL SPECIFICATIONS SURFACE TEMPERATURE vs. POWER Element: Self-supporting nickel-chrome alloy (LVR10 also utilizes manganin) 250 Encapsulation: High temperature mold compound LVR05 200 LVR03 Terminals: Tinned copper LVR10 Part Marking: Dale, model, wattage, value, tolerance, date LVR01 150 code 100 Packaging: Reference Wirewound Through Hole Resistor Packaging (www.vishay.com/doc 21028) 50 1 2 3 4 567 8 9 10 The improved TCR characteristics of these LVR models from - 55 C to + 125 C (reference to + 25 C) are as follows: POWER IN W TCR vs. RESISTANCE VALUE DERATING 400 120 LVR03 100 LVR10 300 LVR01 80 LVR03 LVR05 LVR05 LVR10 200 60 40 100 LVR01 20 0 0.02 0.04 0.06 0.08 0.10 - 65 - 25 25 75 125 175 225 275 RESISTANCE () AMBIENT TEMPERATURE IN C PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal Shock - 65 C to + 125 C, 5 cycles, 15 min at each extreme (0.2 % + 0.0005 ) R Short Time Overload 5 x rated power (LVR01, 03, 05), 10 x rated power (LVR10) for 5 s (0.5 % + 0.0005 ) R Low Temperature Storage - 65 C for 24 h (0.2 % + 0.0005 ) R High Temperature Exposure 250 h at + 275 C (+ 175 C for LVR01) (2.0 % + 0.0005 ) R Dielectric Withstanding Voltage 1000 V , 1 min (0.1 % + 0.0005 ) R RMS Insulation Resistance MIL-STD-202 Method 302, 100 V 1000 M minimum Moisture Resistance MIL-STD-202 Method 106, 7b not applicable (0.2 % + 0.0005 ) R Shock, Specified Pulse MIL-STD-202 Method 213, 100 g s for 6 ms, 10 shocks (0.1 % + 0.0005 ) R Vibration, High Frequency Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each (0.1 % + 0.0005 ) R Load Life 2000 h at rated power, + 25 C, 1.5 h ON, 0.5 h OFF (2.0 % + 0.0005 ) R Bias Humidity + 85 C, 85 % RH, 10 % bias, 1000 h (1.0 % + 0.0005 ) R www.vishay.com For technical questions, contact: ww2aresistors vishay.com Document Number: 30206 2 Revision: 21-Feb-11 TCR IN ppm/C R A T E D P O W E R I N % SURFACE TEMPERATURE IN C