RW1/RW2 Series

RW1/RW2 Series
Surface Mount Four Terminal Current Sense
F e at u r e s
• Extremely low resistance and high precision tolerance
• Low T.C.R. achieved (±50ppm/°C) • Flameproof UL94-V-0 • Marking: Black body color with white marking
S E R IE S S P ECI F ICATI O N S
Power Rating Resistance Range
Type (watts) E-12 (mΩ)
RW1S0CK
1
5mΩ - 50mΩ
RW2S0DK
2
5mΩ - 50mΩ
Resistance
Tolerance
1%
1%
Dielectric Withstanding TCR
Voltage
(max. ppm/°C)
500V
±50
500V
±50
Qty./Reel
1000
1000
characteristics
Rated Ambient Temp. +70°C
Derating
Operating Temp. Range -55°C - +125°C
Input
Detecting
Circuit
R
W
Output
125
80
100
RW2S0DK
Percent Rated Power
Typical Schematic
Surface Temperature Rise
100
Temperature Rise (ϒC)
TCR max. ±50 ppm/°C
60
40
20
0
Voltage Terminal
(KELVIN terminal)
75
25
0
-55 -40
-20
0
Current Terminal
20
40 70 60
80
Ambient Temperature, °C
100
RW1S0CK
50
125 140
0
P E R F O R M A N CE D ATA
Requirement ∆R
Typical
Parameter Limit
16
Test Method
Resistance Within
regulated
tolerance
—
25°C
T.C.R. Within
specified
T.C.R.
—
+25°C/-55°C and +25°C/+125°C
Overload ±1.0%
±1.0%
Rated power x 5 for 5 seconds
Resistance to Solder ±1.0%
Heat
±1.0%
260°C ± 5°C, 10 seconds ±1 second
Rapid Change of ±1.0%
Temperature
±0.5%
-55°C (30 minutes), +125°C (30 minutes), 500 cycles
Moisture Resistance ±2.0%
±0.5%
40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON,
0.5 hr OFF cycle
Endurance at 70°C ±1.0%
±0.5%
70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
Low Temperature ±0.5%
Operation
±0.25%
-55°C, 1 hour
High Temperature ±0.5%
Exposure
±0.25%
+125°C, 100 hours
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]
20
40
60
80
Percent Rated Power
100
RW1/RW2 Series
Surface Mount Four Terminal Current Sense
d i m e ns i ons
(in./mm)
Voltage
Electrode
Molded
Resistive
Resin
Element
L
Current
Electrode
W
t
e
f
c
b
d
h
g
a
c
k
j
m
0.425±.02 (10.8±0.5) 0.244±.012 (6.2±0.3) 0.083±.008 (2.1±0.2) 0.118±.012 (3.0±0.3) 0.031±.008 (0.8±0.2) 0.504±.02 (12.8±0.5)
0.323±.012 (8.2±0.3)
0.122±.008 (3.1±0.2)
0.197±.012 (5.0±0.3)
0.039±.008) (1.0±0.2)
h
j
k
m
n
0.098±.004 (2.5±0.1) 0.39 (10.0)
0.08 (2.0)
0.04 (1.0)
0.12 (3.0)
0.118±.004 (3.0±0.1)
0.47 (12.0)
0.09 (2.3)
0.05 (1.15)
0.21 (5.3)
n o
r
RW2S0DK
L
W
t
a
b
Land Pattern
Dimensions for reference only
RW1S0CK c
d
e
f
g
o
p
q
r
s
0.055±.02 (1.4±0.5) 0.047±.02 (1.2±0.5) 0.051±.012 (1.3±0.3) 0.051±.012 (1.3±0.3) 0.197±.004 (5.0±0.1) 0.24
0.20
0.06
0.08
0.04
(6.0)
(5.0)
(1.6)
(2.0)
(1.0)
0.079±.02 (2.0±0.5)
0.079±.02 (2.0±0.5)
0.087±.012 (2.2±0.3)
0.087±.012 (2.2±0.3)
0.236±.004 (6.0±0.1)
0.31
0.24
0.09
0.13
0.06
(8.0)
(6.0)
(2.2)
(3.2)
(1.6)
s
p
q
ord e r i n g i nform a t i on
RoHS Compliant
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Type &
Power Rating
RW1S0CK = 1 watt
RW2S0DK = 2 watt
Ohms
R005 = 0.005�
R050 = 0.05�
Tolerance
F = 1%
D = 0.5%
Packaging
T = tape and reel
(optional)
Current
Sense
Power Rating
Resistor (watts)
The part itself will be
marked as follows:
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Ohms
10m ohms = 0.01�
Standard Part Numbers for RW Series
Wattage:
Tolerance:
Ohms
1 watt
1%
1%
RW1S0CK----DET
RW2S0DK----FET
RW1S0CKR005DET
RW1S0CKR010DET
RW1S0CKR025DET
RW1S0CKR050DET
RW2S0DKR005FET
RW2S0DKR010FET
RW2S0DKR025FET
RW2S0DKR050FET
Series: RW1S0CK----FET
0.00500
0.01000
0.02500
0.05000
RW1S0CKR005FET
RW1S0CKR010FET
RW1S0CKR025FET
RW1S0CKR050FET
Tolerance
F = 1%
D = 0.5%
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]
2 watt
0.5%
17