THICK FILM
(
ANTI SURGE
)
Flat Chip Resistors
EU
RoHS
SG73S
Endured Surge Voltage Flat Chip Resistors
■Construction
c
L
c
W
⑥
⑤
t
d
②
③
④
①
Protective coating ④
Ni plating
②
Resistive film
⑤
Sn plating
③
Inner electrode
⑥
Ceramic substrate
①
Coating color
：Black（1E）
Green（1J, 2A, 2B, 2E, 2E1）
■Dimensions
■Features
・
Superior to RK73 series chip resistors in surge withstanding
voltage and high power.
・
Resistance tolerance is available from ±0.5％.
・
Suitable for both reflow and flow solderings.
・
Products with lead free termination meet EU-RoHS
requirements. EU-RoHS regulation is not intended for Pb-glass
contained in electrode, resistor element and glass.
・
AEC-Q200 Tested.
Type
（Inch Size Code）
1E（0402）
1J（0603）
1J AT（0603）
2A（0805）
2A AT（0805）
2B（1206）
2B AT（1206）
2E（1210）
2E1（1210）
L
1.0
＋0.1
－0.05
1.6±0.2
2.0±0.2
Dimensions（mm）
W
c
d
0.5±0.05 0.15±0.1
0.25
＋0.05
－0.1
0.3±0.1
0.3±0.1
0.8±0.1
0.35±0.15
0.5±0.2
＋0.2
0.3
－0.1
0.3
＋0.2
－0.1
1.25±0.1
0.45±0.25
0.6±0.2
0.4
＋0.2
0.4
＋0.2
－0.1
－0.1
1.6±0.2
0.55±0.35 0.8±0.2
2.6±0.2
0.4
＋0.2
－0.1
0.4
＋0.2
－0.1
Weight
（g）
（1000pcs）
t
0.35±0.05
0.68
0.45±0.1
0.5±0.1
0.55±0.1
0.6±0.1
15.5
2.14
4.54
9.14
3.2±0.2
■Applications
・
E.C.U.
・
Circuits to catch inductive lighting surge.
■Type Desiqnation
■Reference Standards
IEC 60115-8
JIS C 5201-8
EIAJ RC-2134C
Example
SG73S
Product
Code
2A
Power
Rating
Characteristic
T
TD
103
J
Resistance
Tolerance
D：±0.5%
F：±1%
G：±2%
J ：±5%
Terminal
Surface Material
T：Sn
Taping
TP:2mm pitch
punch paper
TD:4mm pitch
punch paper
TE:4mm pitch
plastic
embossed
BK:Bulk
Nominal
Resistance
D,F：4 digits
G,J：3 digits
1E : 0.125W
Nil：Standard
0.2W
※1
NEW
A：Heat shock
resistance
※2
1J : 0.2W
0.33W
※1
2A : 0.25W
0.5W
※1
2B : 0.33W
0.75W
※1
2E : 0.5W
0.75W
※1
2E1: 1W
※1
■Ratings
Type
Power
Rating
0.125W
0.2W
※1
0.2W
1J
0.33W
2A
2B
2E
2E1
※1
※2 With type A, only T is available as the terminal surface material.
Contact us when you have control request for environmental hazardous material other than the substance specified by
EU-RoHS.
For further information on taping, please refer to APPENDIX C on the back pages.
Rated
Ambient
Temp.
70℃
70℃
70℃
Rated
Terminal
Part Temp.
125℃
105℃
135℃
T.C.R.
（×10
−6
/
K）
±200
±100
±100
※3
±100
±100
※3
±200
±200
±200
±200
Resistance Range（Ω）
G:±2％
D:±0.5％
F:±1％
J :±5％
E24・E96
E24・E96
E24
10½1M
510½576k
10½499
590k½1M
510½576k
10½499
590k½1M
10½1M
10½1M
10½1M
10½1M
1½1M
510½576k
1½499
590k½1M
510½576k
1½499
590k½1M
1½1M
1½1M
1½1M
1½1M
1½10M
510½560k
1½470
620k½10M
510½560k
1½470
620k½10M
1½10M
1½10M
1½10M
1½10M
Max.
Working
Voltage
75V
Max.
Overload
Voltage
100V
Packaging & Q’ty/Reel（pcs）
TP
10,000
TD
—
TE
—
1E
150V
200V
10,000
5,000
—
70℃
70℃
70℃
70℃
70℃
70℃
70℃
70℃
125℃
125℃
100℃
125℃
105℃
125℃
110℃
95℃
0.25W
0.5W
※1
0.33W
0.75W
※1
0.5W
0.75W
※1
1.0W
※1
400V
200V
200V
200V
600V
※4
（800V）
400V
400V
400V
10,000
—
—
—
5,000
5,000
5,000
5,000
4,000
※5
4,000
※5
4,000
※5
4,000
※5
Operating Temperature Range：−55℃∼＋155℃
Rated voltage＝
√￣￣￣￣￣￣￣￣￣￣￣￣￣￣
or Max. working voltage, whichever is lower.
Power Rating×Resistance value
※1 If you use at the rated power, please keep the condition that the terminal of the resistor is below the rated terminal part temperature. Please refer to the derating curves based on the terminal
temperature of right side on the next page.
※3 Cold T.C.R.（−55℃∼＋25℃） is ±150×10
−6
/K.
※4 Applies when power rating is 0.4W or lower.
※5 Standard packaging：TD(4mm pitch punch paper)
If any questions arise whether to use the“Rated Ambient Temperature”or the“Rated Terminal Part Temperature”in your usage conditions, please give priority to the“Rated Terminal Part
Temperature”.
For more details, please refer to“Introduction of the derating curves based on the terminal part temperature”on the beginning of our catalog.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
Contact our sales representatives before you use our products for applications including automotives, medical equipment and aerospace equipment.
Contact our sales representatives before you use our products for applications including automotives, medical equipment and aerospace equipment.
Malfunction or failure of the products in such applications may cause loss of human life or serious damage.
Malfunction or failure of the products in such applications may cause loss of human life or serious damage.
Jun.
2021
Oct.
2021
www.koaglobal.com
■Derating Curve
Ambient temperature
100
Percent rated power ％）
（
Flat Chip Resistors
Flat Chip Resistors
Terminal part temperature
100
Terminal part temperature
100
Percent rated power
Percent rated power
80
60
40
20
0
-60 -40 -20
-55
80
60
40
20
0
-60 -40 -20
-55
1E/0.125W
（125℃）
2A/0.25W
（125℃）
2B/0.33W
（125℃）
2E/0.5W
（125℃）
1J/0.2W
（135℃）
80
60
40
20
0
-60 -40 -20
-55
2E1/1W
（95℃）
2A/0.5W
（100℃）
1E/0.2W,2B/0.75W
（105℃）
2E/0.75W
（110℃）
1J/0.33W
（125℃）
0
60 80 100 120 140 160
70
155
Ambient temperature
（℃）
20
40
80 100 120 140 160
125 135 155
Terminal part temperature
（℃）
あ1
0
20
40
60
80 100 120 140 160
95 105 110 125
155
あ1
Terminal part temperature
（℃）
0
20
40
60
For resistors operated at an ambient temperature of 70℃ or higher,
the power shall be derated in accordance with the above derating
curve.
When the terminal part temperature of the resistor exceeds the rated terminal part temperature shown above, the power shall be
derated according to the derating curve.
あ1
あ1
If you want to use at the rated power of ※1 or ※4, please use the derating curves based on the terminal part temperature of right side.
※Please refer to“Introduction of the derating curves based on the terminal part temperature”on the beginning of our catalog before use.
■ESD Limiting Voltage
8 8
8
ESD Limiting Voltage (kV)
ESD Limiting Voltage (kV)
ESD Limiting Voltage (kV)
SG73S 1E
SG73S 1E1E
SG73S
ESD Limiting Voltage (kV)
10 10
10
ESD Limiting Voltage (kV)
ESD Limiting Voltage (kV)
SG73S 1J
SG73S 1J 1J
SG73S
ESD Limiting Voltage (kV)
12 12
12
ESD Limiting Voltage (kV)
ESD Limiting Voltage (kV)
SG73S 2A
SG73S 2A2A
SG73S
Human model
Human model
Human model
Machine model
Machine model
Machine model
7 7
7
6 6
6
5 5
5
4 4
4
3 3
3
2 2
2
1 1
1
0 0
0
1 11
10 10
10
Human model
Human model
Human model
Machine model
Machine model
Machine model
8 8
8
6 6
6
4 4
4
2 2
2
0 0
0
1 1
1
Human model
Human model
Human model
Machine model
Machine model
Machine model
10 10
10
8 8
8
6 6
6
4 4
4
2 2
2
0 0
0
1 1
1
10 10
10
100
100k
100 100 1k 1k
1k
10k10k 100k
10k
100k
Nominal Resistance（
Nominal Resistance Ω） Ω）
Nominal ResistanceΩ）
（ （
1M 1M
1M
10M
10M10M
10 10
10
100
10k
100k 1M1M 10M
10M
100100 1k 1k
1k 10k 10k 100k
100k
1M
10M
Nominal Resistance（
Nominal Resistance Ω） Ω）
Nominal ResistanceΩ）
（ （
100
10k
100k 1M1M 10M
10M
100100 1k 1k
1k 10k 10k 100k
100k
1M
10M
Nominal Resistance（
Nominal Resistance Ω） Ω）
Nominal ResistanceΩ）
（ （
16 16
16
ESD Limiting Voltage (kV)
ESD Limiting Voltage (kV)
ESD Limiting Voltage (kV)
SG73S 2B
SG73S 2B2B
SG73S
ESD Limiting Voltage (kV)
20 20
20
Machine model
Machine model
Machine model
ESD Limiting Voltage (kV)
ESD Limiting Voltage (kV)
SG73S 2E, 2E1
SG73S 2E,2E,2E1
SG73S 2E1
Human model
Human model
Human model
Machine model
Machine model
Machine model
14 14
14
12 12
12
10 10
10
8 8
8
6 6
6
4 4
4
2 2
2
0 0
0
1 1
1
10 10
10
Human model
Human model
Human model
18 18
18
16 16
16
14 14
14
12 12
12
10 10
10
8 8
8
6 6
6
4 4
4
2 2
2
0 0
0
1 1
1
100
10k
100k 1M1M 10M
10M
100100 1k 1k
1k 10k 10k 100k
100k
1M
10M
Nominal Resistance（
Nominal Resistance Ω） Ω）
Nominal ResistanceΩ）
（ （
10 10
10
100
10k
100k 1M1M 10M
10M
100100 1k 1k
1k 10k 10k 100k
100k
1M
10M
Nominal Resistance（
Nominal Resistance Ω） Ω）
Nominal ResistanceΩ）
（ （
■Temperature Rise
SG73S 1E-1J
120
SG73S 2A-2E
200
1J
0.33W）
（
①
1E
（0.2W）
①
180
160
2B
（0.75W）
①
2E
（1W）
①
2B
（0.75W）
②
2E
（1W）
②
2A
（0.5W）
①
2A
（0.5W）
②
100
1J
0.33W）
（
②
1E
（0.2W）
②
Temperature Rise
（℃）
Temperature Rise
（℃）
Regarding the temperature rise, the
value of the temperature varies per
conditions and board for use since the
temperature is measured under our
measuring conditions.
80
140
120
100
80
60
40
20
60
40
Measurement condition
Room temperature: 25℃
PCB: FR-4t = 1.6mm
Cu foil thickness: 35µm
① Hot spot
：
② Terminal
：
20
0
0
25
50
75
100
0
0
Power Rating
（%）
Power Rating
（%）
25
50
75
100
■Performance
Test Items
Resistance
T.C.R.
Overload
（Short time）
Resistance to
soldering heat
Rapid change of
temperature
Performance Requirements ΔR±
（％＋0.1Ω）
Limit
Typical
Within specified tolerance
—
Within specified T.C.R.
—
2
1
0.5
0.75
Test Methods
25℃
＋25℃/－55℃ and ＋25℃/＋125℃
Rated voltage×2.5 for 5s（2A : 0.4W, 0.5W, 2B : 0.75W, 2E : 0.75W,
2E1 : 1W Rated voltage×2 for 5s）
260℃±5℃, 10s±1s
0.5：Characteristic「Nil」Standard）
（
0.3：Characteristic「Nil」Standard）
（
Characteristic「Nil」
（Standard）
：ー55℃
（30min.）
/＋125℃
（30min.） cycles
100
1
：Characteristic「A」Heat shock resistance） 0.5：Characteristic「A」Heat shock resistance） Characteristic「A」
（
（
（Heat shock resistance）
：ー55℃
（30min.）
/＋125℃
（30min.）
1000 cycles
40℃±2℃, 90%½95%RH, 1000h
Moisture resistance
3
0.75
1.5h ON/0.5h OFF cycle
Endurance at 70℃ or rated
70℃±2℃ or rated terminal part temperature ±2℃ 1000h
3
0.75
terminal part temperature
1.5h ON/0.5h OFF cycle
High temperature exposure 1
0.3
＋155℃, 1000h
■Precautions for Use
・
The substrate of chip resistors is alumina. Cracks may occur at the connection of solder (solder fillet portion) due to the difference of the coefficient of thermal
expansion from a mounting board when heat stress like heat cycle, etc. are repeatedly given to them. Care should be taken to the occurrence of the cracks when
the change in ambient temperature or ON/OFF of load is repeated. The occurrence of the crack by heat stress may be influenced by the size of a pad, solder
volume, heat radiation of mounting board etc., so please pay careful attention to designing when a big change in ambient temperature and conditions for use like
ON/OFF of load can be assumed.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
Contact our sales representatives before you use our products for applications including automotives, medical equipment and aerospace equipment.
Contact our sales representatives before you use our products for applications including automotives, medical equipment and aerospace equipment.
Malfunction or failure of the products in such applications may cause loss of human life or serious damage.
Malfunction or failure of the products in such applications may cause loss of human life or serious damage.
Jun.
2021
Oct.
2021
www.koaglobal.com
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