Document Number: 30206 For technical questions, contact: ww2aresistors@vishay.com www.vishay.com
Revision: 21-Feb-11 1
Wirewound Resistors, Precision Power, Low Value, Commercial,
Axial Lead
LVR
Vishay Dale
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
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.
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
HISTORICAL
MODEL
POWER RATING
P25 °C W
RESISTANCE RANGE (1)
TOLERANCE
± % TECHNOLOGY
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
TECHNICAL SPECIFICATIONS
PARAMETER UNIT LVR01 LVR03 LVR05 LVR10
Operating Temperature Range °C - 65 to + 175 - 65 to + 275
Dielectric Withstanding Voltage VRMS 1000 1000 1000 1000
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
Maximum Working Voltage V (P x R)1/2
Weight (maximum) g 0.5 2 5 11
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: LVR055L000FS73
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
VR055L000FS73L
www.vishay.com For technical questions, contact: ww2aresistors@vishay.com Document Number: 30206
2Revision: 21-Feb-11
LVR
Vishay Dale Wirewound Resistors, Precision Power, Low Value, Commercial,
Axial Lead
DIMENSIONS in inches [millimeters]
Note
(1) On some standard reel pack methods, the leads may be trimmed to a shorter length than shown
MATERIAL SPECIFICATIONS
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)
The improved TCR characteristics of these LVR models
from - 55 °C to + 125 °C (reference to + 25 °C) are as follows:
TCR vs. RESISTANCE VALUE
SURFACE TEMPERATURE vs. POWER
DERATING
1.50 [38.10] (1)
minimum
A
C
B
MODEL
DIMENSIONS in inches [millimeters]
A
± 0.010 [0.254]
B
± 0.010 [0.254]
C
± 0.002 [0.051]
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]
LVR10 1.828 [46.43] 0.392 [9.96] 0.040 [1.02]
0.02
RESISTANCE (Ω)
LVR05
400
300
200
100
TCR IN ppm/°C
LVR03
LVR01
LVR10
0.04 0.06 0.08 0.10
12 3 4 567 8 910
250
200
150
100
50
NI ERUTAREPMET ECAFRUS °C
POWER IN W
LVR03
LVR01
LVR05
LVR10
- 65 - 25 25 75 125 175 225 275
AMBIENT TEMPERATURE IN °C
120
100
80
60
40
20
0
% N I R E W O P D
E
T A R
LVR01
LVR03
LVR05
LVR10
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 VRMS, 1 min ± (0.1 % + 0.0005 ) R
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
Document Number: 91000 www.vishay.com
Revision: 11-Mar-11 1
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