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
P
25 °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
V
RMS
-
lb
ppm/°C
V
g
LVR01
- 65 to + 175
1000
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
LVR03
5
0.5
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: LVR055L000FS73
L
V
R
0
VALUE
5
5
L
TOLERANCE
D
= ± 0.5 %
F
= ± 1.0 %
G
= ± 2.0 %
H
= ± 3.0 %
J
= ± 5.0 %
K
= ± 10.0 %
0
0
0
F
S
7
3
SPECIAL
(Dash Number)
(up to 3 digits)
From
1 to 999
as applicable
GLOBAL MODEL
LVR01
LVR03
LVR05
LVR10
PACKAGING
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
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
R
= Decimal
L
= m
(values < 0.010
)
R1500
= 0.15
7L000
= 0.007
Historical Part Numbering example: LVR-5 0.005
1 % S73
LVR-5
HISTORICAL MODEL
0.005
RESISTANCE VALUE
1%
TOLERANCE CODE
S73
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]
A
1.50 [38.10]
(1)
minimum
MODEL
LVR01
LVR03
LVR05
LVR10
B
C
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
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)
SURFACE TEMPERATURE vs. POWER
SURFACE TEMPERATURE IN
°
C
250
LVR03
LVR01
LVR05
LVR10
200
150
100
50
The improved TCR characteristics of these LVR models
from - 55 °C to + 125 °C (reference to + 25 °C) are as follows:
1
2
3
4
5
6
7
8
9
10
POWER IN W
TCR vs. RESISTANCE VALUE
TCR IN ppm/°C
400
LVR03
LVR10
300
LVR01
DERATING
RATED POWER IN %
120
100
80
LVR03
LVR05
LVR10
LVR05
200
60
40
100
20
0
- 65
LVR01
0.02
0.04
0.06
0.08
0.10
RESISTANCE (Ω)
- 25
25
75
125
175
225
275
AMBIENT TEMPERATURE IN °C
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Low Temperature Storage
High Temperature Exposure
Dielectric Withstanding Voltage
Insulation Resistance
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
Bias Humidity
www.vishay.com
2
CONDITIONS OF TEST
- 65 °C to + 125 °C, 5 cycles, 15 min at each extreme
5 x rated power (LVR01, 03, 05), 10 x rated power (LVR10) for 5 s
- 65 °C for 24 h
250 h at + 275 °C (+ 175 °C for LVR01)
1000 V
RMS
, 1 min
MIL-STD-202 Method 302, 100 V
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100
g's
for 6 ms, 10 shocks
Frequency varied 10 Hz to 2000 Hz, 20
g
peak, 2 directions 6 h each
2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
+ 85 °C, 85 % RH, 10 % bias, 1000 h
For technical questions, contact:
ww2aresistors@vishay.com
TEST LIMITS
± (0.2 % + 0.0005
) R
± (0.5 % + 0.0005
) R
± (0.2 % + 0.0005
) R
± (2.0 % + 0.0005
) R
± (0.1 % + 0.0005
) R
1000 M minimum
± (0.2 % + 0.0005
) R
± (0.1 % + 0.0005
) R
± (0.1 % + 0.0005
) R
± (2.0 % + 0.0005
) R
± (1.0 % + 0.0005
) R
Document Number: 30206
Revision: 21-Feb-11
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Document Number: 91000
Revision: 11-Mar-11
www.vishay.com
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