MELF
(
METAL FILM, CARBON FILM
)
RN41
MELF Type Fixed Metal Film Resistors
RD41
MELF Type Fixed Carbon Film Resistors
MELF Type Cross-conductors
CC
■Construction
RN41
RD41
①
② ③
④
EU
RoHS
CC
①
⑤
④
D
3
C
⑥
⑤
C
D
3
Melf Type Resistors
L
① Insulation coating
② Trimming line
③ Ceramic core
L
⑥
③
D
1
D
2
Coating color：RN41/CC：Blue, RD41：Ivoly
Color code：RD41：3 color-bands
RN41 (E24)：4 color-bands
RN41 (E24½96)：5 color-bands
CC：1 color-band
④ Electrode cap
⑤ Resistive film
⑥ Marking
■Dimensions
Type
（Inch/DIN Size Code）
2ES
（1406/0204）
CC12M
（1406/0204）
2E・3AS
（2309/0207）
CC25 2309/0207）
（
L
3.5±0.2
5.9±0.2
C
0.5½0.9
0.5min
Dimensions（mm）
D1
D 2 Max.
1.4±0.1
2.2±0.10
1.55
2.40
D 3 Max.
0.1
0.15
Weight
（g）
（1000pcs）
20
75
■Features
・
SMD resistors.
・
Free direction for mounting due to cylindrical design.
・
High precision products (Resistance tolerance
−6
±0.1% and T.C.R.±25×10 /K) available. (RN41)
・
The electrode strength is firm.
・
The noise characteristics is excellent.
・
Suitable for reflow, flow and iron solderings.
・
Products meet EU-RoHS requirements.
・
AEC-Q200 Tested (RN41 2ES/3AS, CC 12M/25)
■Type Designation
Example
RN41
Product
Code
RN 41
RD 41
2ES
Power
Rating
2ES:0.25W
0.4W
2E:0.25W
3AS:1W
T
Terminal
Surface Material
T:Sn
TE
Packaging
TE：Taping
BK Bulk
：
1001
Nominal
Resistance
B,C,D,F:4 digits
G, J:3 digits
F
Resistance
Tolerance
B : ±0.1%
C : ±0.25%
D : ±0.5%
F : ±1%
G : ±2%
J : ±5%
50
T.C.R.
（×10
−6
/K）
25：±25
50：±50
Nil RD41
：
■Reference Standards
IEC 60115-8
JIS C 5201-8
EIAJ RC-2132A
CC12M
Product
Code
CC12M
CC25
T
Terminal
Surface Material
T：Sn
TE
Packaging
TE : Taping
BK: Bulk
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
0.25W0
※1,※2
Current
Rating
—
—
—
—
—
2A
5A
Rated
Ambient
Temp.
70℃
—
70℃
70℃
70℃
70℃
RN41 2ES
0.4W
RN41 3AS
1W
※1,※2
00
RD41 2ES
0.25W
RD41 2E
0.25W
—
CC12M
CC25
—
Rated
T.C.R.
Terminal Part
B ±0.1%
：
（×10
−6
/K）
Temp.
E24・E96
43½511k
±25
90℃
±50
—
90℃
±50
—
90℃
—
—
—
±50
—
※3
—
※3
—
—
—
—
Resistance Range and Resistance Tolerance
（Ω）
C ±0.25% D ±0.5%
：
：
F ±1%
：
G ±2%
：
E24・E96 E24・E96 E24・E96
E24
100½100k 100½604k
—
—
—
—
—
—
—
—
—
—
—
—
1.0½5.11M
1.0½5.11M
1.0½1M
—
—
—
—
J ±5%
：
E24
—
0.22½0.91
0.22½0.91
Max. Working Max. Overload
Voltage
Voltage
200V
200V
400V
200V
300V
—
400V
400V
600V
400V
600V
—
Packaging & Q’
ty
（pcs）
Reel
Box
40,000
40,000
10,000
40,000
10,000
40.000
10.000
3,000
3,000
1,500
3,000
1,500
3,000
1,500
—
0.22½0.91
2.2½1M
2.2½1M
1.0½2.2M 1.0½2.2M
20mΩ or under
Operating Temperature Range：−55℃∼＋155℃
Rated voltage＝
√￣￣￣￣￣￣￣￣￣￣￣￣
or Max. working voltage, whichever is lower.
Power Rating×Resistance value
※1 A power rating is guaranteed at the terminal part temperature.
※2 A power rating shall be guaranteed with a method shown in the item. (:Performance) Please inquire before you order and/or use.
※3 Please contuct us for T.C.R. of RD41.
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
Percent rated power ％）
（
Percent rated power ％）
（
Percent rated power ％）
（
80
60
40
20
0
-60 -40 -20
-55
0
Percent rated power ％）
（
100
100
80
60
40
20
100
80
60
40
20
100
80
60
40
20
RN41 2ES, 3AS
0
0
0
0 20 -60 -40 -20 100 120 140 160 80 100 120 140 160
20 -60 -40 -20 100 120 140 160 80 100 120 140 -40 -20
40 60 80 0 20 40 60
-60 160
40 60 80 0 20 40 60
70
90
90
-55
-55
-55
155 70
155
155
155
Ambient temperature
（℃）Ambient temperature
（℃）
（℃）
Terminal part temperature 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.
Please contact us about CC series's 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.
Please refer to“Introduction of the derating curves based on the terminal part temperature”on
the beginning of our catalog before use.
Melf Type Resistors
Melf Type Resistors
■Performance
RD41, RN41
Test Items
Type
Performance Requirements
※4
ΔR±
（％＋0.05Ω）
Limit
Resistance
T.C.R.
Overload
（Short time）
Intermittent overload
Resistance to
soldering heat
Rapid change of
temperature
Moisture resistance
Endurance at 70℃
Low temperature
exposure
High temperature
exposure
RN41
RD41
RN41
RD41
RN41
RD41
RD41
RN41
RD41
RN41
RD41
RN41
RD41
RN41
RD41
RD41
RN41
RD41
Within specified
tolerance
Within specified T.C.R.
2ES：Test group D
1.0
1.0
2ES：Test group D
1.0
2ES：Test group D
1.0
2ES：Test group C
5.0
2ES：Test group A
2.0
1.0
2ES：Test group C
2.0
Typical
—
—
0.3
0.5
—
—
0.5
—
0.75
—
2.5
—
1.0
0.75
0.75
1.0
Max. 20mΩ
Max. 20mΩ
Max. 20mΩ
Max. 20mΩ
—
—
Max. 7.5mΩ
Max. 7.5mΩ
Max. 7.5mΩ
Max. 7.5mΩ
—
—
CC
Performance Requirements
Limit
Max. 20mΩ
—
—
Typical
Max. 7.5mΩ
—
—
25℃
＋25℃/＋125℃
Rated voltage×2.5 or Max. overload vol., whichever is
lower, for 5s
Rated voltage×4 or Max. Intermittent overload voltage,
whichever is lower, 10,000 cycles.
260℃±5℃, 10s±1s
－55℃
（30min.）
/＋125℃
（30min.）、 cycles
5
40℃±2℃、
90%½95%RH、
1000h
1.5h ON/0.5h OFF cycle
70℃±2℃、
1000h
1.5h ON/0.5h OFF cycle
－55℃、
1h
＋155℃、
2h
RN41 2ES、
3AS：155℃、
1000h
Test Methods
※4 Performance requirement for RN41 3AS are different from the above, so consult with us about the detail.
RN41 Test group
Stability class for each resistance
Stability class
0.25
0.5
1
2
Resistance range
10½332kΩ
1½＜10Ω
0.22½＜1Ω
＞332kΩ½5.11MΩ
Limit resistance changing attests
Test group
A
B
C
±
（0.25＋0.05Ω）
±
（0.25＋0.05Ω） ±
（0.50＋0.05Ω） ±
（0.50＋0.05Ω）
±
（1.00＋0.05Ω）
±
（0.50＋0.05Ω） ±
（1.00＋0.05Ω） ±
（2.00＋0.05Ω）
D
±
（0.05＋0.05Ω）
±
（0.10＋0.05Ω）
±
（0.25＋0.05Ω）
±
（0.50＋0.05Ω）
■Precautions for Use
・
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. Please wash them to get rid of these ionic substances especially when using lead-
free solder that may contain much of the said substances for improving a wetting characteristic. Using RMA solder or RMA flux, or well-washing is needed. Also,
attaching ionic substances such as perspiration, salt etc. by storage environments or mounting conditions/environments negatively affects their moisture
resistance, corrosion resistance etc. Please wash them to remove the ionic substances when they are polluted.
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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