surge current flat chip resistors
(anti-surge, anti-sulfuration)
EU
features
•
Excellent anti-sulfuration characteristic
due to using high sulfuration-proof inner
top electrode material/pulse
•
Superior to RK73 series chip resistors
in pulse withstanding voltage
•
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 Tested
dimensions and construction
c
L
c
Type
(Inch Size Code)
L
Dimensions
inches
(mm)
W
c
d
t
SG73 1J
(0603)
Sn
Plating
.063±.008 .031±.004 .012±.004 .012±.004 .018±.004
(1.6±0.2)
(0.8±0.1)
(0.3±0.1)
(0.3±0.1) (0.45±0.1)
.079±.008 .049±.004 .016±.008
(2.0±0.2) (1.25±0.1) (0.4±0.2)
.063±.008
(1.6±0.2)
.102±.008
(2.6±0.2)
.012
(0.3
.016
(0.4
.02±.012
(0.5±0.3)
.026±.006
(0.65±0.15)
+.008
-.004
+0.2
)
-0.1
+.008
-.004
+0.2
)
-0.1
W
SG73 2A
(0805)
SG73 2B
(1206)
SG73 2E
(1210)
.02±.004
(0.5±0.1)
t
d
Protective
Coating
Resistive Inner
Film
Electrode
Ni
Plating
.126±.008
(3.2±0.2)
Ceramic
Substrate
SG73 W2H
.197±.008 .098±.008
(2010)
(5.0±0.2)
(2.5±0.2)
SG73 W3A
.248±.008 .122±.008
(6.3±0.2)
(3.1±0.2)
(2512)
.024±.004
(0.6±0.1)
ordering information
SG73
Type
SG73
2A
Power
Rating
1J
2A
2B
2E
W2H
W3A
RT
Termination
Material
RT: Sn
Anti-Sulfur
TD
Packaging
TP: 0402, 0603, 0805: 7" 2mm pitch
punch paper
TD: 0603, 0805, 1206, 1210:
7" 4mm pitch punched paper
TDD: 0603, 0805, 1206, 1210:
10" paper tape
TE: 0805, 1206, 1210, 2010 & 2512:
7" 4mm embossed plastic
TED: 0805, 1206, 1210, 2010 & 2512:
10" embossed plastic
For further information on packaging,
please refer to Appendix A
103
Nominal
Resistance
±10%, ±20%:
2 significant figures
+ 1 multiplier “R”
indicates decimal on
value <10Ω
K
Resistance
Tolerance
K: ±10%
M:±20%
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
10/21/20
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
61
resistors
SG73-RT
SG73-RT
surge current flat chip resistors
(anti-surge, anti-sulfuration)
applications and ratings
Part
Designation
SG73 1J
(0603)
SG73 2A
(0805)
SG73 2B
(1206)
SG73 2E
(1210)
SG73 W2H
(2010)
SG73 W3A
(2512)
Power
Rating
0.1W
0.125W
0.33W
0.50W
0.75W
1W
Rated
Ambient
Temp.
70°C
70°C
70°C
70°C
70°C
70°C
Rated
Terminal Part
Temp.
125°C
125°C
125°C
125°C
125°C
125°C
T.C.R.
(ppm/°C)
Max.
±400
±200
±400
±200
±400
±200
±400
±200
±400
±200
±400
±200
Resistance Range
K: ±10%
M: ±20%
E-12
1Ω - 8.2Ω
10Ω - 1MΩ
1Ω - 8.2Ω
10Ω - 1MΩ
1Ω - 8.2Ω
10Ω - 1MΩ
1Ω - 8.2Ω
10Ω - 1MΩ
1Ω - 8.2Ω
10Ω - 1MΩ
1Ω - 8.2Ω
10Ω - 1MΩ
Maximum
Working
Voltage
50V
150V
Maximum
Overload
Voltage
100V
200V
-55°C
to
+155°C
200V
400V
Operating
Temp.
Range
% Rated Power
% Rated Power
resistors
Rated voltage =
√Power
rating x resistance value or max. working voltage, whichever is lower
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
Derating Curve
100
80
60
40
20
0
-60 -40 -20
-55
100
80
60
40
20
0
-60 -40 -20
-55
0
80 100 120 140 160
155
70
Ambient Temperature
(°C)
20
40
60
0
20
40
60 80
100 120 140 160
125
155
Terminal Part Temperature
(°C)
For resistors operated at an ambient temperature
of 70°C or above, a power rating shall be
derated in accordance with the derating curve.
For resistors operated at a terminal part temperature
of described for each size or above, a power rating
shall be derated in accordance with the derating curve.
Please refer to “Introduction of the derating curve
based on the terminal part temperature” in the
beginning of our catalog before use.
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Solder Heat
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
High Temperature Exposure
Sulfuration Test
Requirement
∆
R
Limit
Within specified
tolerance
Within specified
T.C.R.
±2%
±1%
±0.5%
±3%
±3%
±1%
±5%
±(%+0.1Ω)
Typical
—
—
±0.5%
±0.75%
±0.3%
±0.75%
±0.75%
±0.3%
±0.2%
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
-55°C (30 minutes), +125°C (30 minutes), 100 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
Soaked in industrial oil with 3.5% sulfur concentration 105°C ± 3°C, 500 hours
Test Method
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.
12/10/20
62
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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