※1 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
HV73V1J
HV73V2A
HV73V2B
Power
Rating
0.1W
0.25W
0.33W
70℃
Rated Ambient
Temp.
Rated
Terminal
Part Temp.
80℃
100℃
115℃
T.C.R.
（×10
−6
/K）
±100
※3
±100
±200
±100
±200
D:±0.5%
E24・E96
—
100k½1M
—
100k½1M
—
Resistance Range
（Ω）
F:±1%
G:±2%
E24・E96
E24
10k½10M
10k½10M
100k½10M 100k½10M
—
—
100k½10M 100k½10M
—
—
J:±5%
E24
10k½10M
100k½10M
11M½51M
100k½10M
11M½51M
Max. Working
Voltage
350V
400V
800V
Max. Overload
※2
Voltage
（D.C.）
500V
800V
1200V
5,000
Taping & Q’
ty/Reel
（pcs）
TD
Operating Temperature Range：−55℃∼＋155℃
Rated voltage＝
√￣￣￣￣￣￣￣￣￣￣￣￣
or Max. working voltage, whichever is lower.
Power Rating×Resistance value
※2 Max. overload voltage is specified by D.C. voltage.
※3 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
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
100
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
Percent rated power ％）
（
Percent rated power ％）
（
100
80
60
40
20
0
-60 -40 -20
-55
Terminal part temperature
1J/0.1W
（80℃）
2A/0.25W
（100℃）
2B/0.33W
（115℃）
20 40 60 80 100 120 140 160
115
155
Terminal part temperature（℃）
あ1
0
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
HV73V 1J
35
1J
1J
100
90
80
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
※Please refer to“Introduction of the derating curves based on the terminal part
temperature”on the beginning of our catalog before use.
HV73V 2A-2B
2B
2B
2A
2A
30
Temperature Rise
（℃）
25
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.
70
60
50
40
20
15
Measurement condition
30
20
10
Room temperature: 25℃
PCB: FR-4t = 1.6mm
Cu foil thickness: 35µm
① Hot spot
：
② Terminal
：
0
5
10
0
0
Power Rating
（%）
25
50
75
100
0
Power Rating
（%）
25
50
75
100
■One-Pulse Limiting Electric Power
HV73V 1J-2B
One-Pulse Limiting Electric Power W）
（
1000
100
10
2B
1
2A
1J
0.1
0.01
0.001
0.01
0.1
1
10
100
1000
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
Performance Requirements ΔR±
（％＋0.1Ω）
Limit
Within specified tolerance
Within specified T.C.R.
2
1
0.5：
（10kΩ≦R≦10MΩ）
1 ：
（11MΩ≦R≦51MΩ）
Characteristic「A」
（Heat shock resistance）
2
2
Typical
—
—
0.5
0.5
0.3：
（10kΩ≦R≦10MΩ）
0.5：
（11MΩ≦R≦51MΩ）
Characteristic「A」
（Heat shock resistance）
0.75
0.75
Test Methods
25℃
＋25℃/－55℃ and ＋25℃/＋125℃
Rated voltage
（D.C.）×2.5 for 5s
260℃±5℃, 10s±1s
Characteristic
「Nil」
（Standard）
：
ー55℃
（30min.）
/＋125℃
（30min.）
100 cycles
Characteristic
「A」
（Heat shock resistance）
：
ー55℃
（30min.）
/＋125℃
（30min.）
1000 cycles
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
Moisture resistance
Endurance at 70℃ or rated
terminal part temperature
■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. 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.
PCB设计
