Metal Film Flat Chip Resistors (For Automotive, High reliability)
■Construction
c
L
c
W
t
d
①
②
⑦
③
⑥
⑤
④
① Protective coating
② Resistive film
③ Inner electrode
④ Ni plating
⑤ Sn plating
⑥ Ceramic substrate
⑦ Inner protective coat
Coating color：Black
■Features
・
SMD metal film resistors.
・
High precision type ±0.05％ is also available as standard.
−6
・
High performance T.C.R. ±5×10 /K is also available as
standard.
・
Low current noise.
・
Operating temperature range ∼155℃.
Rated ambient temperature：85℃
・
High reliability with ΔR of ±0.1% in the long-term reliability test.
・
Endurance at 85℃ (3,000h) : ΔR of ±0.1%
・
Improved moisture resistance by special protective coating.
・
High precision resistor solution for tough environments,
especially in high reliable automotive, medical and industrial
applications.
・
Suitable for both flow and reflow solderings.
・
Products meet EU-RoHS requirements.
・
AEC-Q200 Tested.
・
Sulfur resistance verified according to ASTM B 809-95.
■Dimensions
Type
（Inch Size Code）
1E
（0402）
1J
（0603）
2A
（0805）
2B
（1206）
2E
（1210）
L
1.0
＋0.1
－0.05
1.6±0.2
2.0±0.2
3.2±0.2
Dimensions（mm）
W
c
d
00.5±0.05
0.25±0.10
0.25
＋0.05
－0.1
0.8±0.1
0.3±0.1
0.3±0.1
1.25±0.20
0.4±0.2
0.3
＋0.2
－0.1
1.6±0.2
0.5±0.3
0.4
＋0.2
－0.1
2.5±0.2
Weight
（g）
（1000pcs）
t
0.35±0.05
0.68
0.45±0.10
2.14
0.5±0.1
4.54
9.14
0.6±0.1
14.50
■Type Designation
Example
RN73H
Product
Code
2B
Power
Rating
1E :0.063W
1J: 0.1W
2A :0.125W
2B: 0.25W
2E: 0.25W
T
Terminal
Surface Material
T:Sn
G:Au
※1
TD
Taping
TP:2mm pitch
punch paper
TD:4mm pitch
paper
TE:4mm pitch
plastic
embossed
BK:Bulk
1002
Nominal
Resistance
4 digits
B
Resistance
Tolerance
A :±0.05%
B :±0.1%
C:±0.25%
D:±0.5%
F :±1%
25
T.C.R.
（×10
−6
/K）
05
10
25
50
100
■Applications
・
Automotive electronics (Power Train, Body Control)
・
Industrial equipment
・
Medical equipment
・
Measurement equipment
■Reference Standards
IEC 60115-8
JIS C 5201-8
EIAJ RC-2133A
※1 Products with gold plated electrodes are also available with 1E and 1J type, so please consult with us.
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
Power
Rating
Rated
Ambient
Temp.
85℃
Rated
T.C.R.
Terminal
（×10
−6
/K）
Part Temp.
A:±0.05%
－
NEW
±500
±100
－
90℃
±250
－
±500
－
±500
100½59k
±100
47½59k
95℃
±250
47½59k
±500
－
±100
－
±500
100½100k
±100
47½100k
100℃
±250
47½100k
±500
－
±100
－
±500
100½300k
±100
47½300k
110℃
±250
47½300k
±500
－
±100
－
±100
100½510k
±250
51½510k
110℃
±500
－
±100
－
Resistance Range（Ω）
E24・E96・E192
B:±0.1% C:±0.25% D:±0.5%
220½10k
－
－
47½100k
47½100k
47½100k
47½300k
47½300k
47½300k
47½300k
47½300k
10½300k
100½59k
－
－
47½360k
47½360k
47½360k
15½1M
15½1M
10½1M
15½1M
15½1M
10½1M
－
－
10½1M
100½100k
－
－
47½1M
47½1M
47½1M
15½1.5M
15½1.5M
10½1.5M
15½1.5M
15½1.5M
10½1.5M
－
－
10½1.5M
100½300k
－
－
47½1M
47½1M
47½1M
15½1M
15½1M
10½1M
15½1M
15½1M
10½1M
－
－
10½1M
100½510k 100½510k 100½510k
15½1M
15½1M
10½1M
15½1M
15½1M
10½1M
－
－
10½1M
F:±1%
－
47½100k
47½300k
10½300k
－
47½360k
10½1M
10½1M
10½1M
－
47½1M
10½1.5M
10½1.5M
10½1.5M
－
47½1M
10½1M
10½1M
10½1M
100½510k
10½1M
10½1M
10½1M
Max.
Working
Voltage
50V
Max.
Overload
Voltage
100V
Taping & Q’
ty/Reel
(pcs)
TP
TD
TE
10,000
－
－
1E
0.063W
1J
0.1W
85℃
75V
150V
－
5,000
－
2A
0.125W
85℃
150V
300V
－
5,000
4,000
2B
0.25W
85℃
200V
400V
－
5,000
4,000
2E
0.25W
85℃
200V
400V
－
5,000
4,000
Operating Temperature Range：−55℃∼＋155℃
Rated voltage＝
√￣￣￣￣￣￣￣￣￣￣￣￣
or Max. working voltage, whichever is lower.
Power Rating×Resistance value
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.
Aug.
2021
Oct.
2021
www.koaglobal.com
■Derating Curve
Percent rated power ％）
（
Percent rated power ％）
（
100
80
60
40
20
0
-60 -40 -20
-55
20 40 60 80 100 120 140 160
85
155
Ambient temperature
（℃）
0
100
80
60
40
20
0
-60 -40 -20 0 20 40 60 80 100 120 140 160
155
-55
90 95110
Terminal part temperature
（℃）
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
temperature”on the beginning of our catalog before use.
Flat Chip Resistors
Flat Chip Resistors
1E
（90℃）
1J 95℃）
（
2A
（100℃）
2B, 2E 110℃）
（
For resistors operated at an ambient temperature of 85℃ or higher, the power shall be
derated in accordance with the above derating curve.
■Performance
Test Items
Performance Requirements
ΔR±
（％＋0.05Ω）
Limit
Resistance
T.C.R.
Overload
（Short time）
Resistance to soldering heat
Rapid change of temperature
Moisture resistance
Endurance at 85℃
High temperature exposure
※2 Depends on resistance value.
Test Methods
Typical
－
－
0.01
0.01
0.02
0.05
0.03
0.05
25℃
＋25℃/＋125℃：T.C.R.＝±5
（×10
－6
/K）
＋25℃/－55℃ and ＋25℃/＋155℃：others
Rated voltage × 2.5 or Max. overload., whichever is less, for 5s
260℃±5℃, 10s±1s
1E, 1J, 2A：－55℃
（30min.）
/＋155℃
（30min.）
1000 cycles
2B, 2E：－55℃
（30min.）
/＋155℃
（30min.）
500 cycles
85℃±2℃, 85％±5％RH, 1000h
1.5h ON/0.5h OFF cycle
85℃±2℃, 3000h
1.5h ON/0.5h OFF cycle
＋155℃, 1000h
Within specified tolerance
Within specified T.C.R.
0.05
0.05
※2
0.1
※2
0.1
※2
0.1
0.1
※2
■Precautions for Use
・
The properly and electrostatically measured taping materials are used for the components, but attention should be paid to the fact that there is some danger the
parts absorb on the top tapes to cause a failure in the mounting and the parts are destructed by static electricity (1J, 2A, 2B, 2E: 1kV and more, 1E: 0.5kV and
more at Human Body Model 100pF, 1.5kΩ) to change the resistance in the conditions of an excessive dryness or after the parts are given vibration for a long
time as they are packaged on the tapes. Similarly, care should be given not to apply the excessive static electricity when mounting on the boards.
・
Ionic impurities such as flux etc. that are attached to these products or those mounted onto a PCB, negatively affect their moisture resistance, corrosion
＋
−
resistance, etc. The flux may contain ionic substances like chlorine, acid, etc. while perspiration and saliva include ionic impurities like sodium (Na ), chlorine (Cl )
etc. Therefore these kinds of ionic substances may induce electrical corrosion when they invade into the products. Either thorough washing or using RMA solder
and flux are necessary since lead free solder contains ionic substances. Washing process is needed, before putting on moisture proof material in order to prevent
electrical corrosion.
・
When heat-resistant masking tapes are attached to the chip resistors at the time of mounting and then detached, there is a possibility of exfoliation of the top
electrodes. It is known that the heat applied in the mounting process will enhance the adhesion strength of the tape adhesive so please avoid the use. If the use of
masking tapes are unavoidable, then please be sure not to attach the tape adhesives directly on the products.
When high-pressure shower cleaning is implemented, there is a possibility of exfoliation of the top electrodes caused by the water pressure stress so please avoid
the implementation.
If the implementation is unavoidable, then please evaluate the products beforehand.
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.
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