LVR-50.2OHM1.0% [VISHAY]
RESISTOR, CURRENT SENSE, METAL STRIP, 5 W, 1 %, 0.2 ohm, THROUGH HOLE MOUNT, AXIAL LEADED;型号: | LVR-50.2OHM1.0% |
厂家: | VISHAY |
描述: | RESISTOR, CURRENT SENSE, METAL STRIP, 5 W, 1 %, 0.2 ohm, THROUGH HOLE MOUNT, AXIAL LEADED 电阻器 |
文件: | 总2页 (文件大小:112K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LVR
Vishay Dale
Wirewound Resistors, Precision Power, Low Value,
Commercial, Military, MIL-PRF-49465 Type RLV, 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
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
MIL-PRF-49465
POWER RATING
RESISTANCE RANGE*
Ω
± 1%, ± 3%, ± 5%, ± 10%
TECHNOLOGY
P25°C
W
TYPE
LVR-1
—
1
3
0.01 - 0.1**
0.005 - 0.2
0.01 - 0.2
0.005 - 0.3
0.01 - 0.3
0.01 - 0.8
Metal Strip
Metal Strip
LVR-3
—
LVR-3-26
LVR-5
RLV30 (M4946506)
3
Metal Strip
—
RLV31 (M4946507)
—
5
Metal Strip
LVR-5-26
LVR-10
5
Metal Strip
10
Coil Spacewound
*Resistance is measured 3/8" [9.52mm] from the body of the resistor, or at 1.183" [30.05mm], 1.315" [33.40mm], 1.675" [42.545mm] or
2.575" [65.405mm] spacing for the LVR-1, LVR-3, LVR-5 and LVR-10 respectively.
**Standard resistance values are 0.01Ω, 0.015Ω, 0.02Ω, 0.025Ω, 0.03Ω, 0.033Ω, 0.04Ω, 0.05Ω, 0.051Ω, 0.06Ω, 0.068Ω, 0.07Ω, 0.08Ω, 0.09Ω
and 0.1Ω with 1% tolerance. Other resistance values may be available upon request.
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
LVR-1
1
LVR-3
LVR-5
5
LVR-10
Rated Power at + 25°C
Operating Temperature Range
W
3
10
°C
- 65/ + 175
1000
- 65/ + 275
1000
Dielectric Withstanding Voltage VAC
1000
1000
Insulation Resistance
Short Time Overload
Ω
10,000 Megohms minimum dry
5 x rated power for 5 seconds
10
-
10 x rated power for 5 seconds
Terminal Strength (minimum)
Temperature Coefficient
Maximum Working Voltage
Weight (maximum)
lb
5
2
10
10
ppm/°C
See TC vs Resistance Value Chart
(P x R)1/2
V
g
2
5
11
ORDERING INFORMATION
LVR-3
0.05Ω
RESISTANCE
Ω
1.0%
MODEL
TOLERANCE
± %
For technical questions, contact ww2aresistors@vishay.com
Document Number 30206
Revision 18-Sep-02
www.vishay.com
120
LVR
Wirewound Resistors, Precision Power, Low Value, Commercial, Military,
MIL-PRF-49465 Type RLV, Axial Lead
Vishay Dale
DIMENSIONS
MODEL
DIMENSIONS in inches [millimeters]
A
B
C
1.50 [38.10]*
Minimum
± 0.010 [0.254] ± 0.010 [0.254]
± 0.002 [0.051]
A
LVR-1
LVR-3
LVR-5
LVR-10
0.427 [10.85]
0.560 [14.22]
0.925 [23.50]
1.828 [46.43]
0.115 [2.92]
0.205 [5.21]
0.330 [8.38]
0.392 [9.96]
0.020 [0.508]
0.032 [0.813]
0.040 [1.02]
0.040 [1.02]
C
B
*On some standard reel pack methods, the leads may be trimmed to
a shorter length than shown.
MATERIAL SPECIFICATIONS
250
200
150
Element: Self-supporting nickel-chrome alloy
LVR-5
LVR-3
(LVR-10 also utilizes manganin)
LVR-10
LVR-1
Encapsulation: High temperature mold compound
Terminals: Tinned copper
100
50
Part Marking: DALE, Model, Wattage, Value, Tolerance,
Date Code
1
2
3
4
5
6
7
8
9
10
The improved TC characteristics of these LVR models from
- 55°C to + 125°C (referenced to + 25°C) are as follows:
POWER IN W
Surface Temperature vs Power
120
400
LVR-3
100
80
LVR-10
300
LVR-1
LVR-3
LVR-5
LVR-10
LVR-5
60
200
100
40
LVR-1
20
0
- 65
20
40
60
80
100
- 25
25
75
125
175
225
275
RESISTANCE (Ω X 10-3)
AMBIENT TEMPERATURE IN °C
TC vs Resistance Value
PERFORMANCE
Derating
TEST
Thermal Shock
CONDITIONS OF TEST (MIL-PRF-49465)
- 65°C to + 125°C, 5 cycles, 15 minutes at each extreme
TEST LIMITS
± (0.2% + 0.0005Ω)∆R
Short Time Overload
Low Temperature Storage
High Temperature Exposure
Dielectric Withstanding Voltage
Insulation Resistance
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
5 x rated power (LVR-1, -3, -5), 10 x rated power (LVR-10) for 5 seconds ± (0.5% + 0.0005Ω)∆R
- 65°C for 24 hours
250 hours at + 275°C (+ 175°C for LVR-1)
1000V rms, one minute
± (0.2% + 0.0005Ω)∆R
± (2.0% + 0.0005Ω)∆R
± (0.1% + 0.0005Ω)∆R
1000 MΩ minimum
MIL-STD-202 Method 302, 100 volts
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100g's for 6 milliseconds, 10 shocks
Frequency varied 10 to 2000Hz, 20g peak, 2 directions 6 hours each
2000 hours at rated power, + 25°C, 1.5 hours “ON”, 0.5 hours “OFF”
ANSI J-STD-002
± (0.2% + 0.0005Ω)∆R
± (0.1% + 0.0005Ω)∆R
± (0.1% + 0.0005Ω)∆R
± (2.0% + 0.0005Ω)∆R
95% coverage
Solderability
Bias Humidity
+ 85°C, 85% RH, 10% bias, 1000 hours
± (1.0% + 0.0005Ω)∆R
Document Number 30206
Revision 18-Sep-02
For technical questions, contact ww2aresistors@vishay.com
www.vishay.com
121
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