LR1WMR Datasheet, PDF (1/2 Pages) RFE international – SURFACE MOUNT LR Series: Metal Alloy, Very Low Resistance RESISTORS

SURFACE MOUNT RESISTORS
RoHS
LR Series: Metal Alloy, Very Low-Resistance
ü
INTRODUCTION
RFE International, Inc. LR Series of low resistance
Surface Mount Resistors are ideal for applications
where low resistance, tight tolerance and temperature
stability is important. Current sense, power supply,
Industrial controls, are a few of the applications
suitable for this series of resistor.
PERFORMANCE
APPLICATIONS
• Power Supply
• Battery Pack
• DIY Tools
• Inverter / Converter (AC/DC, DC/DC, DC/AC)
• Test Equipment
• Precision Measuring Equipment
• LED Driver
• Automotive
Test Item
Conditions of test
Test Method
Thermal Shock
-55 °C to +125 °C, 1000 cycles, 15 minutes at each extreme JIS C5202 7.4
Solderability test
Steam aging: 4hrs, cool down 30 minutes then test
JIS C5202 6.5
Low Temperature
Storage
High Temperature
Exposure
Bias Humidity
Mechanical Shock
-55°C for 1000 hours
JIS C5202 7.1
1000 hours @ +155 °C
+85 °C, 85% RH, 10% Bias, 1000 hours, 90 minutes ”ON”, 30
minutes ”OFF”
100 grams for 6 milliseconds, 5 pulses
JIS C5202 7.2
JIS C5202 7.9
JIS C5202 6.13
Vibration
Frequency varied 55Hz in one minute, 3 directions, 12 hours JIS C5202 6.7
Load Life
1000 hours @ rated power, +100 °C, 1.5 hours “ON”,
0.5 hours “OFF”
JIS C5202 7.10
Resistance to Solder Solder temp./immersion time: 260+5 °C, 10+1secs and 350+10 °C
JIS C5202 6.4
Heat
3.5+0.5secs
Moisture Resistance Mil-STD-202, Method 106, 0% power, 7a and 7b not required JIS C5202 7.6
Resistance to solvent
Immersion time: 60+ÿ±5 secs, 20 °C~25 °C
JIS C5202 6.9
DIMENSIONS
Inch (mm)
Model Resistance
L
Range mÿW©
DIMENSIONS
W
H
SOLDER PAD DIMENSIONS
T
a
b
i
LR1WMR
(1206)
1~50
0.12ÿ±0.010 0.062ÿ±0.010 0.029ÿ±0.010 0.02ÿ±0.010
0.063(1.60) 0.086(2.18) 0.026(0.66)
(3.15ÿ±0.254) (1.60ÿ±0.254) (0.750ÿ±0.254) (0.50ÿ±0.254)
LR1WSR
(2010)
LR1WR,
LR1.5WR,
LR2WR,
LR3WSR
(2512)
0.5~3
4~100
0.5~4
4.1~100
0.20ÿ±0.010 0.10ÿ±0.010
(5.10ÿ±0.254) (2.54ÿ±0.254)
0.246ÿ±0.010 0.13ÿ±0.010
(6.25ÿ±0.254) (3.30ÿ±0.254)
0.031ÿ±0.010
(0.8ÿ±0.254)
0.031ÿ±0.010
(0.8ÿ±0.254)
0.051ÿ±0.010
(3.15ÿ±0.254)
0.031ÿ±0.010
(0.8ÿ±0.254)
0.074ÿ±0.010
(1.88ÿ±0.254)
0.044ÿ±0.010
(1.13ÿ±0.254)
0.011(1.80)
0.009(2.29)
0.120(3.05)
0.083(2.11)
0.115(2.92)
0.115(2.92)
0.145(3.68)
0.145(3.68)
0.048(1.22)
0.095(2.41)
0.050(1.27)
0.125(3.18)
LR4WSR
(2725)
0.25, 0.5
1
1.5
2
2.5
3
0.268ÿ±0.010 0.264ÿ±0.010
(6.8ÿ±0.254) (6.7ÿ±0.254)
0.039ÿ±0.010
(1.0ÿ±0.254)
0.043ÿ±0.010
(1.1ÿ±0.254)
0.039ÿ±0.010
(1.0ÿ±0.254)
0.035ÿ±0.010
(0.9ÿ±0.254)
0.085ÿ±0.010
(2.15ÿ±0.254)
0.085ÿ±0.010
(2.15ÿ±0.254)
0.085ÿ±0.010
(2.15ÿ±0.254)
0.071ÿ±0.010
(1.8ÿ±0.254)
0.065ÿ±0.010
(1.65ÿ±0.254)
0.051ÿ±0.010
(1.3ÿ±0.254)
0.125(3.2)
0.27(6.9) 0.052(1.32)
LR3WR,
LR3.5WR,
LR4WR
(2728)
4~100
0.264ÿ±0.010 0.283ÿ±0.010 0.039ÿ±0.010 0.045ÿ±0.010
0.108(2.75) 0.308(7.8) 0.136(3.5)
(6.7ÿ±0.254) (7.2ÿ±0.254) (1.0ÿ±0.254) (1.15ÿ±0.254)
RFE International • Tel:[phone] • Fax:[phone] • E-Mail [e-mail]
C2BB05
REV.2009.3.3