WK73 Datasheet, PDF (1/2 Pages) KOA Speer Electronics, Inc. – high power, wide terminal type flat chip resistors

WK73
high power, wide terminal type flat chip resistors
EU
features
• Wide-side termination (reverse-geometry)
type flat chip resistor
• 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
L
c
c
Type
Dimensions inches (mm)
(Inch Size Code)
L
W
c
d
t
2B
.063±.006 .126±.006 .012±.008 .018±.006
W
(0612) (1.6±0.15) (3.2±0.2) (0.3±0.2) (0.45±0.15)
Solder
Plating
t
Inner
Ni
Plating
Resistive ^Electrode
d
Protective
Film
Coating Ceramic
Substrate
Derating Curve
100
80
60
40
20
0
-60 -40 -20
-55
0 20 40 60 80 100 120 140 160
70
155
Ambient Temperature
(°C)
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
2J
T
2H
(1020)
2J
(1218)
.098±.006
(2.5±0.15)
.122±.006
(3.1±0.15)
.197±.006
(5.0±0.15)
.181±.006
(4.6±0.15)
.016±.008
(0.4±0.2)
.016±.008
(0.4±0.2)
.030±.006
(0.75±0.15)
.024±.004
(0.6±0.1)
3A
(1225)
.122±.006 .252±.006 .018±.008
(3.1±0.15) (6.3±0.15) (0.45±0.2)
100
80
3A (90°C)
2H, 2J (100°C)
2B (105°C)
60
40
20
0
-60 -40 -20
-55
0 20 40 60 80 100 120 140 160
90 105
155
Terminal Part Temperature
(°C)
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.
Please refer to “Introduction of the derating curve based on the terminal
part temperature” on the beginning of our catalog before use.
TE
33L0
F
Type
WK73S
WK73R
Size
2B: 0.75W
2H: 1W
2J: 1W
3A: 1.5W
Termination
Material
T: Sn
Packaging
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
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
Resistance
Tolerance
D: ±0.5%
F: ±1%
J: ±5%
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/27/14
24 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: [phone] • www.koaspeer.com