THICK FILM
(
ANTI SURGE
)
Flat Chip Resistors
EU
RoHS
SG73P
Endured Pulse Power 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, 1EW）
Green（1J, 2A, 2B, 2E,2E1）
■Dimensions
Type
（Inch Size Code）
1E
（0402）
1EW
（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
W
Dimensions（mm）
c
d
t
0.35±0.05
0.45±0.1
0.5±0.1
0.55±0.10
0.6±0.1
15.5
Weight
（g）
（1000pcs）
0.68
2.14
4.54
9.14
■Features
・
Superior to RK73 series chip resistors in pulse 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.
0.5±0.05 0.15±0.1
0.8±0.1
1.25±0.1
1.6±0.2
0.3±0.1
0.35±0.15
0.3
＋0.2
－0.1
0.45±0.25
0.4
＋0.2
－0.1
0.55±0.35
0.4
＋0.2
－0.1
0.25
＋0.05
－0.1
0.3±0.1
0.5±0.2
0.3
＋0.2
－0.1
0.6±0.2
0.4
＋0.2
－0.1
0.8±0.2
0.4
＋0.2
－0.1
3.2±0.2
2.6±0.2
■Applications
・
E.C.U.
・
Circuits to catch inductive lighting surge.
■Reference Standards
IEC 60115-8
JIS C 5201-8
EIAJ RC-2134C
■Type Designation
Example
SG73P
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
※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.
■Ratings
Type
1E
Power
Rating
0.125W
0.2W
※1
0.25W
※1
0.2W
1J
0.33W
※1
0.25W
2A
0.5W
※1
Rated
Ambient
Temp.
70℃
70℃
70℃
70℃
70℃
70℃
70℃
70℃
70℃
70℃
70℃
70℃
Rated
Terminal
Part Temp.
125℃
105℃
125℃
135℃
125℃
125℃
100℃
125℃
105℃
125℃
110℃
95℃
T.C.R.
（×10
−6
/K）
±200
±100
±200
±100
±100
※3
±100
±100
±100
±200
±100
±200
±100
±200
±100
±200
±200
±200
※3
Resistance Range（Ω）
D:±0.5％
E24・E96
10½1M
10½1M
—
510½576k
10½499
590k½1M
510½576k
10½499
590k½1M
100½100k
10½97.6
102k½1M
100½100k
10½97.6
102k½1M
300½1M
10½294
300½1M
10½294
10½1M
10½1M
F:±1％
E24・E96
1½1M
10½1M
1½9.76
510½576k
1½499
590k½1M
510½576k
1½499
590k½1M
100½100k
1½97.6
102k½1M
100½100k
1½97.6
102k½1M
300½1M
1½294
300½1M
1½294
1½1M
1½1M
G:±2％
J:±5％
E24
1½10M
Max.
Working
Voltage
75V
75V
Max.
Overload
Voltage
100V
100V
Packaging & Q’
ty/Reel（pcs）
TP
10,000
10,000
TD
—
—
TE
—
—
NEW
1EW
0.33W
2B
0.75W
2E
2E1
※1
0.5W
0.75W
※1
1.0W
※1
10½1M
01½9.1
1.1M½10M0
510½560k
1½470
620k½10M
510½560k
1½470
620k½10M
100½100k
1½91
110k½10M
100½100k
1½91
110k½10M
300½1.1M
1½270
1.2M½10M
300½1.1M
1½270
1.2M½10M
1½10M
1½10M
150V
200V
10,000
5,000
—
400V
600V
※4
（800V）
10,000
5,000
4,000
※5
200V
400V
—
5,000
4,000
※5
200V
200V
400V
400V
—
—
5,000
5,000
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” the Rated Terminal Part Temperature” your usage conditions, please give priority to the Rated Terminal Part Temperature”
“
or “
in
“
.
For more details, please refer to Introduction of the derating curves based on the terminal part temperature” the beginning of our catalog.
“
on
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 ％）
（
Percent rated power ％）
（
80
60
40
20
0
-60 -40 -20
-55
Flat Chip Resistors
Flat Chip Resistors
Terminal part temperature
100
80
60
40
20
0
-60 -40 -20
-55
1E/0.125W
（125℃）
1EW/0.25W
（125℃）
2A/0.25W
（125℃）
2B/0.33W
（125℃）
2E/0.5W
（125℃）
1J/0.2W
（135℃）
Terminal part temperature
100
Percent rated power ％）
（
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
（℃）
あ1
Terminal part temperature
0
20
40
60
80 100 120 140 160
95 105 110 125
155
Terminal part temperature
（℃）
あ1
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
あ1
あ1
derated according to the derating curve.
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.
■Temperature Rise
SG73P 1E-1J
140
SG73P 2A-2E
200
1EW
（0.25W）
①
180
1J
0.33W）
（
①
1E
（0.2W）
①
160
2B
（0.75W）
①
2E
（1W）
①
120
Temperature Rise
（℃）
100
Temperature Rise
（℃）
2B
（0.75W）
②
2E
（1W）
②
2A
（0.5W）
①
2A
（0.5W）
②
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.
1EW
（0.25W）
②
1J
0.33W）
（
②
1E
（0.2W）
②
140
120
100
80
60
40
80
60
40
Measurement condition
Room temperature: 25℃
PCB: FR-4t = 1.6mm
Cu foil thickness: 35µm
① Hot spot
：
② Terminal
：
20
20
0
0
Power Rating
（%）
25
50
75
100
0
0
Power Rating
（%）
25
50
75
100
■One-Pulse Limiting Electric Power
SG73P 1E-2A
One-Pulse Limiting Electric Power W）
（
1000
SG73P 2B-2E
One-Pulse Limiting Electric Power W）
（
1000
100
100
10
2A
1J
1E
0.1
0.001
10
2E
2B
1
0.01
0.1
1
10
100
1000
1
0.001
0.01
0.1
1
10
100
1000
Pulse Duration
（ms）
Pulse Duration
（ms）
The maximum applicable voltage is equal to the max. overload voltage.
Please ask us about the resistance characteristic of continuous applied pulse.
The pulse endurance values are not assured values,so be sure to check the
products on actual equipment when you use them.
■Performance
Test Items
Resistance
T.C.R.
Overload
（Short time）
Resistance to
soldering heat
Rapid change of
temperature
Moisture resistance
Endurance at 70℃ or
rated terminal part
temperature
Performance Requirements ΔR±
（％＋0.1Ω）
Limit
Within specified tolerance
Within specified T.C.R.
2
1
Typical
—
—
0.5
0.75
Test Methods
25℃
＋25℃/－55℃ and ＋25℃/＋125℃
Rated voltage×2.5 for 5s 1EW : 0.25W, 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
3
3
0.75
0.75
0.3
40℃±2℃, 90%½95%RH, 1000h
1.5h ON/0.5h OFF cycle
70℃±2℃ or rated terminal part temperature ±2℃ 1000h
1.5h ON/0.5h OFF cycle
＋155℃, 1000h
High temperature exposure 1
■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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