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 GLOBAL HISTORICAL POWER RATING RESISTANCE RANGE (1) TOLERANCE TECHNOLOGY MODEL MODEL P25 C W % LVR01 LVR-1 1 0.01 to 0.1 (2) 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 Operating Temperature Range Dielectric Withstanding Voltage Insulation Resistance Short Time Overload Terminal Strength (minimum) Temperature Coefficient Maximum Working Voltage Weight (maximum) UNIT C VRMS lb ppm/C V g LVR01 - 65 to + 175 1000 LVR03 LVR05 LVR10 - 65 to + 275 1000 1000 1000 10 000 M minimum dry 5 x rated power for 5 s 10 x rated power for 5 s 10 10 10 See TCR vs. Resistance Value chart (P x R)1/2 2 5 11 5 0.5 GLOBAL PART NUMBER INFORMATION Global Part Numbering example: LVR055L000FS73 L V R 0 5 5 L 0 0 0 F S 7 3 GLOBAL MODEL VALUE TOLERANCE PACKAGING SPECIAL LVR01 LVR03 LVR05 LVR10 R = Decimal L = m (values < 0.010 ) R1500 = 0.15 7L000 = 0.007 D = 0.5 % F = 1.0 % G = 2.0 % H = 3.0 % J = 5.0 % K = 10.0 % E12 = Lead (Pb)-free bulk E03 = Lead (Pb)-free lacer pack (LVR10) E70 = Lead (Pb)-free, tape/reel 1000 pieces (LVR01, 03) E73 = Lead (Pb)-free, tape/reel 500 pieces (Dash Number) (up to 3 digits) From 1 to 999 as applicable B12 = Tin/lead bulk 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 Revision: 21-Feb-11 For technical questions, contact: ww2aresistors@vishay.com www.vishay.com 1 LVR Vishay Dale Wirewound Resistors, Precision Power, Low Value, Commercial, Axial Lead DIMENSIONS in inches [millimeters] 1.50 [38.10] minimum A MODEL (1) LVR01 LVR03 LVR05 LVR10 C B DIMENSIONS in inches [millimeters] A B C 0.010 [0.254] 0.010 [0.254] 0.002 [0.051] 0.427 [10.85] 0.115 [2.92] 0.020 [0.508] 0.560 [14.22] 0.205 [5.21] 0.032 [0.813] 0.925 [23.50] 0.330 [8.38] 0.040 [1.02] 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 SURFACE TEMPERATURE IN C Element: Self-supporting nickel-chrome alloy (LVR10 also utilizes manganin) Encapsulation: High temperature mold compound Terminals: Tinned copper Part Marking: Dale, model, wattage, value, tolerance, date code Packaging: Reference "Wirewound Through Hole Resistor Packaging" (www.vishay.com/doc?21028) 250 150 LVR05 LVR03 200 LVR10 LVR01 100 50 The improved TCR characteristics of these LVR models from - 55 C to + 125 C (reference to + 25 C) are as follows: 3 4 5 6 7 8 9 10 DERATING 400 LVR03 LVR10 300 2 POWER IN W RATED POWER IN % TCR IN ppm/C TCR vs. RESISTANCE VALUE 1 LVR01 LVR05 200 120 100 80 LVR03 LVR05 LVR10 60 40 100 LVR01 20 0.02 0.04 0.06 0.08 0 - 65 0.10 - 25 25 75 RESISTANCE () 125 175 225 275 AMBIENT TEMPERATURE IN C PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS - 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 VRMS, 1 min (0.1 % + 0.0005 ) R Insulation Resistance MIL-STD-202 Method 302, 100 V Moisture Resistance MIL-STD-202 Method 106, 7b not applicable Thermal Shock 1000 M minimum (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 2 For technical questions, contact: ww2aresistors@vishay.com Document Number: 30206 Revision: 21-Feb-11 Legal Disclaimer Notice Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 11-Mar-11 www.vishay.com 1