THICK FILM
(
FOR HIGH VOLTAGE
)
Flat Chip Resistors
EU
RoHS
HV73
Flat Chip Resistors For High Voltage
■ 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
■Features
・
Superior to RK73 series in maximum working voltage.
・
Suitable for flow and reflow solderings.
・
Products meet EU-RoHS requirements. EU-RoHS regulation
is not intended for Pb-glass contained in electrode, resistor
element and glass.
■ Dimensions
Type
（Inch Size Code）
1J（0603）
2A（0805）
2B（1206）
2H（2010）
3A（2512）
Dimensions（mm）
L±0.2
1.6
2.0
3.2
5.0
6.3
W
0.8±0.1
1.25±0.1
1.6±0.2
2.5±0.2
3.1±0.2
0.5±0.3
0.4
＋0.2
－0.1
.3
c
0.3±0.1
0.4±0.2
d.
0.3±0.1
0.3
＋0.2
－0.1
.3
t±0.1
0.45
0.50
0.6
Weight
（g）
（1000pcs）
2.14
4.54
9.14
24.3
37.1
■Applications
・
Camera Strobe, LCD back-light, AC Adapters etc.
■Reference Standard
s
IEC 60115-8
JIS C 5201-8
EIAJ RC-2134C
■ Type Designation
Example
HV73
Product
Code
2B
Power
Rating
1J:0.1W
2A:0.25W
2B:0.25W
2H:0.5W
3A:1W
T
Terminal
Surface Material
T：Sn
TD
Taping
TD:4mm pitch
punch paper
TE:4mm pitch
plastic
embossed
BK:Bulk
1004
Nominal
Resistance
D,F :4 digits
G,J :3 digits
F
Resistance
Tolerance
D:±0.5%
F:±1%
G:±2%
J :±5%
■ Ratings
Type
1J
2A
2B
Power
Rating
0.1W
0.25W
0.25W
Rated Ambient Rated Terminal
T.C.R.
Temp.
Part Temp.
（×10
−6
/K）
70℃
70℃
70℃
80℃
100℃
100℃
±100
±100
±200
±100
±200
±100
2H
0.5W
70℃
90℃
±200
±300
3A
1W
70℃
105℃
±100
±200
※2
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.
Resistance Range
（Ω）
D:±0.5%
E24・E96
—
100k½1M
—
100k½1M
—
100k½1M
—
—
43k½1M
—
F:±1%
E24・E96
10k½10M
100k½10M
—
100k½10M
—
100k½10M
10.2M½51M
51.1M½100M
43k½10M
10.2M½20M
G:±2%
E24
10k½10M
100k½10M
—
100k½10M
—
100k½10M
11M½51M
56M½100M
43k½10M
11M½20M
J:±5%
E24
10k½10M
100k½10M
11M½51M
100k½10M
11M½51M
100k½10M
Max. Working Max. Overload
※1
Voltage
Voltage
（D.C.）
350V
400V
800V
500V
800V
1000V
Taping & Q’
ty/Reel
（pcs）
TD
5,000
5,000
5,000
TE
－
－
－
11M½51M 2000V
（D.C.）
56M½100M
43k½10M
11M½51M
3000V
（D.C.）
3000V
－
4,000
4000V
－
4,000
Operating Temperature Range：−55℃∼＋155℃
Rated voltage＝
√￣￣￣￣￣￣￣￣￣￣￣￣
or Max. working voltage, whichever is lower.
Power Rating×Resistance value
※1 Max. overload voltage is specified by D.C. voltage.
※2 Cold T.C.R.
（−55℃∼＋25℃）of 1.02MΩ∼10MΩ is ±200×10
−6
/K.
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
46
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.
Oct. 2020
Oct. 2021
www.koaglobal.com
■ Derating Curv
e
100
Percent rated power（％）
80
60
40
20
0
-60 -40 -20
-55
0
20 40 60 80 100 120 140 160
70
155
Ambient temperature
（℃）
Ambient temperature
Flat Chip Resistors
Flat Chip Resistors
100
Percent rated power（％）
80
60
40
20
Terminal part temperature
1J/0.1W
（80℃）
2H/0.5W
（90℃）
2A, 2B/0.25W
（100℃）
3A/1W
（105℃）
0
-60 -40 -20 0 20 40 60 80 100 120 140 160
90 105
-55
155
あ1
Terminal part temperature（℃）
For resistors operated at an ambient temperature of 70℃ or higher, the power shall be
derated in accordance with the above derating curve.
■Temperature Rise
HV73 1J
35
1J
1J
60
70
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.
※Please refer to“Introduction of the derating curves based on the terminal part
あ1
temperature”on the beginning of our catalog before use.
HV73 2A-2B
2B
2A
2B
140
HV73 2H-3A
3A
3A
2H
2H
30
120
Temperature Rise
（℃）
Temperature Rise
（℃）
25
50
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.
2A
100
20
40
80
15
30
60
Measurement condition
Room temperature: 25℃
PCB: FR-4t = 1.6mm
Cu foil thickness: 35µm
① Hot spot
：
② Terminal
：
10
20
40
5
10
20
0
0
25
Power Rating
（%）
50
75
100
0
0
25
Power Rating
（%）
50
75
100
0
0
Power Rating
（%）
25
50
75
100
■One-Pulse Limiting Electric Power
HV73 1J-2A
One-Pulse Limiting Electric Power W）
（
100
HV73 2B-3A
One-Pulse Limiting Electric Power W）
（
1000
10
100
3A
10
2H
1
2A
1J
0.1
2B
1
0.001
0.01
0.1
1
10
100
1000
0.01
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
High temperature exposure
Performance Requirements ΔR±
（％＋0.1Ω）
Limit
Within specified tolerance
Within specified T.C.R.
2
1
Typical
—
—
0.5
0.5
Test Methods
25℃
＋25℃/－55℃ and ＋25℃/＋125℃
Rated voltage
（D.C.）×2.5 for 5s
260℃±5℃, 10s±1s
0.5：
（10kΩ≦R≦10MΩ） 0.3：
（10kΩ≦R≦10MΩ）
－55℃
（30min.）/＋125℃
（30min.）100 cycles
1 ：
（10MΩ<R≦100MΩ） 0.5：
（10MΩ<R≦100MΩ）
2
2
2
0.75
0.75
0.3
40℃±2℃, 90%½95%RH, 1000h
1.5 h ON/0.5 h OFF cycle
70℃±2℃ or rated terminal part temperature ±2℃ 1000h
1.5 h ON/0.5 h OFF cycle
＋155℃, 1000h
■Precautions for Use
・
Max. overload voltage is specified by D.C. voltage. When using in A.C. voltage, the peek value of A.C. voltage shall not exceed the Maximum overload voltage.
・
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, especially when large types of 2H/3A which have large thermal expansion and also self
heating. By general temperature cycle test using glass-epoxy (FR-4) boards under the maximum/minimum temperatures of operating temperature range, the crack
does not occur easily in the types of 1J∼2B, but the crack tends to occur in the types of 2H/3A. 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.
Oct. 2020
Oct. 2021
www.koaglobal.com
47
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