high power, wide terminal type flat chip resistors
EU
features
•
Flat chip resistors of wide terminal type
•
High reliability and performance with T.C.R.
±100 x 10
-6
/K, resistance tolerance ±1%
•
Marking: Black protective coat
•
Products with lead-free terminations meet EU RoHS
requirements. EU RoHS regulation is not intended for
Pb-glass contained in electrode, resistor element and glass.
•
AEC-Q200 Qualified: 0612(2B), 1020(2H), 1218(2J),
1225(3A)
dimensions and construction
c
L
Type
c
(Inch Size Code)
L
Dimensions
inches
(mm)
W
c
d
t
W
2B
(0612)
Solder
Plating
Ni
Plating
.063±.006 .126±.006 .012±.008 .018±.006
(1.6±0.15) (3.2±0.2)
(0.3±0.2) (0.45±0.15)
.098±.006 .197±.006 .016±.008
(2.5±0.15) (5.0±0.15) (0.4±0.2)
.122±.006 .181±.006 .016±.008 .030±.006
(3.1±0.15) (4.6±0.15) (0.4±0.2) (0.75±0.15)
.122±.006 .252±.006 .018±.008
(3.1±0.15) (6.3±0.15) (0.45±0.2)
2H
(1020)
2J
(1218)
2A
(1225)
t
d
Inner
Resistive Electrode
Film
.024±.004
(0.6±0.1)
Protective
Coating Ceramic
Substrate
Derating Curve
100
80
% Rated Power
% Rated Power
60
40
20
0
-60 -40 -20
-55
100
80
60
40
20
0
-60 -40 -20
-55
3A (90°C)
2H, 2J (100°C)
2B (105°C)
0
20
40
60
80 100 120 140
70
Ambient Temperature
(°C)
160
155
0
80 100 120 140 160
90 105
155
TerminalTemperature
(°C)
40
60
20
For resistors operated at an ambient temperature of 70°C or above, a
power rating shall be derated in accordance with the above derating curve.
ordering information
New Part #
WK73S
Type
WK73S
WK73R
2J
Size
2B: 0.75W
2H: 1W
2J: 1W
3A: 1.5W
T
Termination
Material
T: Sn
For resistors operated terminal temperature of described for each size
or above, a power rating shall be derated in accordance with the derating
curve above.
TE
Packaging
33L0
Nominal
Resistance
±1%: 3 significant
figures + 1 multiplier
“R” indicates decimal
on value <100Ω
±5%: 2 significant
figures + 1 multiplier
“R” indicates decimal
on values <10Ω
All values less than 0.1Ω
(100mΩ) are expressed in
mΩ with “L” as decimal.
Ex: 33mΩ, 1% = 33L0
F
Resistance
Tolerance
D: ±0.5%
F: ±1%
J: ±5%
TD: 0612: 7" 4mm pitch
punched paper
TE: 1020, 1218, 1225:
7" embossed plastic
TED: 1020, 1218, 1225:
10" embossed plastic
For further information on
packaging, please refer
to Appendix A
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/16/13
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
17
resistors
WK73
WK73
high power, wide terminal type flat chip resistors
applications and ratings
Part
Designation
Power
Rating
@ 70°C
T.C.R.
(ppm/°C)
Max.
±800
±200
±100
±100
±800
±200
±100
±200
±100
±800
±200
±100
±200
±100
±800
±300
±200
±100
±200
±100
Resistance Range (Ω)
E-24/E-96
(D±0.5%)
—
—
—
10 - 1M
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
E-24
(F±1%)
—
30m - 422m
430m - 9.76
10 - 1M
—
27m - 215m
220m - 9.76
432k - 1M
10 - 430k
—
33m - 237m
240m - 9.76
511k - 1M
10 - 510k
—
22m - 32.4m
33m - 357m
360m - 9.76
332k - 1M
10 - 330K
E-24
(J±5%)
10m - 27m
30m - 390m
430m - 9.1
10 - 1M
10m - 24m
27m - 200m
220m - 9.1
470k - 1M
10 - 430k
10m - 30m
33m - 220m
240m - 9.1
560k - 1M
10 - 510k
10m - 20m
22m - 30m
33m - 330m
360m - 9.1
360k - 1M
10 - 330K
Maximum
Working
Voltage
Maximum
Overload
Voltage
Operating
Temperature
Range
resistors
WK73S2B
WK73R2B
WK73S2H
0.75W
0.75W
1.0W
1.0W
200V
400V
200V
400V
WK73R2H
WK73S2J
WK73R2J
1.0W
1.0W
200V
400V
-55°C
to
+155°C
WK73S3A
1.5W
200V
400V
WK73R3A
1.5W
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%
±0.5%
±0.1%
±2%
±0.2%
±2%
±0.2%
Test Method
25°C
+25°C/-55°C and +25°C/+125°C
Rated Voltage x 2.5 for 5 seconds
260°C ± 5°C, 10 seconds ± 1 second
Holding point 90mm, Bending 1 time, Bending 5mm
-55°C (30 minutes), +155°C (30 minutes), 5 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
±2%: WK73S (±5%) ±0.5%: WK73S (±5%)
+155°C, 1000 hours
±0.2%: all others
±1%: all others
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.
12/16/13
18
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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