Catalog Pages 166

resistors
WU73
wide terminal type low resistance flat
chip resistors
EU
NEW
features
• Wide terminal type flat chip resistor
• High reliability and performance with T.C.R.
±100 x 10-6/K, resistance tolerance ±1%
• Suitable for flow and reflow solderings
• Black coating color
• This product meets EU RoHS requirements.
EU RoHS regulation is not intended for Pb-glass
contained in electrode, resistor element and glass.
• AEC-Q200 Qualified
dimensions and construction
L
c
Type
c
L
(Inch Size Code)
2B
(0612)
W
.063±.006
(1.6±0.15
Dimensions inches (mm)
W
c
d
+.004
.126± -.012
+0.1)
(3.2± -0.3
t
.016±.008 .018±.006 .024±.004
(0.4±0.2) (0.45±0.15) (0.6±0.1)
Ceramic Substrate
Sn Plating
t
Ni Plating
d
Protective Resistive Inner
Electrode
Coating Film
Derating Curve
80
80
% Rated Power
100
% Rated Power
100
60
40
20
60
40
20
0
-60 -40 -20
-55
0
20
40
0
-60 -40 -20
-55
60
80 100 120 140 160
70
155
Ambient Temperature
(°C)
For resistors operated at an ambient temperature of 70°C or above, the
power rating shall be derated in accordance with the above derating curve.
20 40 60 80 100 120 140 160
105
155
Terminal Part Temperature
(°C)
0
For resistors operated at a terminal part temperature
of 105°C or above, the power rating shall be derated
in accordance with the above derating curve.
Please refer to the “Introduction of the derating curves based
on terminal part temperature” in the beginning of the catalog.
ordering information
New Part #
WU73
2B
Type
Size
WU73
2B: 1W
T
Termination
Material
T : Sn
TD
Packaging
TD: 4mm pitch punched paper
For further information on
packaging, please refer
to Appendix A
10L0
F
Nominal
Resistance*
4 digits: 3 significant
figures + 1 multiplier
Ex.
10L0: 10mΩ
R100: 100mΩ
Resistance
Tolerance
F: ±1%
* Resistance value: 10mΩ~75mΩ = 10L0~75L0
Resistance value: 0.1Ω = R100
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
30
12/03/15
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
wide terminal type low resistance flat
chip resistors
applications and ratings
Part
Designation
Power
Rating
Rated
Ambient
Temperature
Rated
Terminal Part
Temperature
T.C.R.
(X 10-6/K)
Resistance
Range (Ω)
E-24, 25m, 50m
Resistance
Tolerance
Operating
Temperature
Range
WU732B
1.0W
70°C
105°C
±150
±100
10m~12m
13m~100m
F: ±1%
-55°C to
+155°C
Rated voltage = √Power rating x resistance value
If any questions should arise whether to use the “Rated Ambient Temperature” or the “Rated Terminal Part Temperature,” please give priority
to the “Rated Terminal Part Temperature.” Prior to use and for more details refer to “Introduction of the derating curves on the terminal part
temperature” in the beginning of the catalog.
environmental applications
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Solder Heat
Bending Test
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
High Temperature Exposure
Requirement ∆ R ±(%+0.005Ω)
Limit
Typical
Within specified
—
tolerance
Within specified
—
T.C.R.
±2%
±0.2%
±1%
±0.2%
±1%
±0.1%
±2%
±0.3%
±2%
±0.1%
±2%
±0.2%
±1%
±0.1%
Test Method
25°C
+25°C/-55°C and +25°C/+125°C
Rated Voltage x 2 for 5 seconds
260°C ± 5°C, 10 seconds ± 1 second
Holding point 90mm, Bending 1 time, Bending 5mm
-55°C (30 minutes), +125°C (30 minutes), 1000 cycles
40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
+155°C, 1000 hours
Additional environmental applications can also be found at www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/03/15
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
31
resistors
WU73
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