Coat-Insulated Precision Fixed Metal Film Resistors
■Construction
C
①
①
②
②
③
③
④
④
⑤
⑤
⑥
L
⑥
⑦
φd
φd
D
④ Electrode cap
④ 電極キャップ
⑤ Lead wire
⑤ リード線
⑥ Resistive
⑥ 抵抗皮膜
film
Electrode cap
Lead wire
Resistive film
Coating color：Light gray
Marking：Alphanumeric
① Insulation coating
① 絶縁塗装
Insulation coating
② トリミングライン
② Trimming line
Trimming line
③ Ceramic core
③ セラミック
Ceramic core
■Features
・
High precision resistors with resistance tolerance ±0.1%
−6
and T.C.R. ±5×10 /K.
・
Excellent long term stability in resistance value.
・
Automatic insertion is applicable.
・
Products meet EU-RoHS requirements.
・
AEC-Q200 Tested (RNS1).
■Dimensions
Type
RNS1/8
RNS1/4
RNS1/2
RNS1
L±1
6.4
9.5
13.5
15.5
Dimensions（mm）
D±0.5
d
（Nominal）
2.3
0.6
3.5
5.5
0.8
ℓ
※
±3
38
Weight
（g/1000pcs）
260
440
530
1400
※ Lead length changes depending on taping and forming type.
■Standard Approved
MIL-R-10509G standard (USA)
■Type Designation
Example
RNS
Product
Code
1/8
Power
Rating
1/8：0.125W
1/4：0.25W
1/2：0.5W
1：1W
E
C
T52
Taping &
Forming
See table
below
A
Packaging
A : AMMO
R : REEL
Nil : BOX
1003
Nominal
Resistance
4 digits
B
Resistance
Tolerance
B：±0.1％
C：±0.25％
D：±0.5％
F：±1％
Super Precision Type Resistors
T.C.R.
Termination
（×10
−6
/K） Surface Material
Y：±5
C : SnCu
T：±10
E：±25
C：±50
Contact us when you have control request for environmental hazardous material other than the substance specified by
EU-RoHS.
For further information on taping and forming, please refer to APPENDIX C on the back pages.
■Taping & Forming Matrix
Type
RNS1/8
RNS1/4
RNS1/2
RNS1
T26
○
—
—
—
Axial Taping
T52
T521
○
—
○
—
○
—
—
○
VT
○
—
—
—
Radial Taping
VTP
VTE
○
○
—
—
—
—
—
—
■Ratings
Type
Power
Rating
T.C.R.
（×10
−6
/K）
Y：±5
T：±10
E：±25
C：±50
E：±25
C：±50
E：±25
C：±50
E：±25
C：±50
B：±0.1％
E24・E192
100½100k
100½200k
5.1½750k
5.1½1M
5.1½1.5M
5.1½1.5M
5.1½2M
5.1½2M
5.1½2.4M
Resistance Range（Ω）
C：±0.25％ D：±0.5％
E24・E192
E24・E192
100½100k 100½100k
100½200k 100½200k
5.1½1.62M
5.1½2M
5.1½2M
5.1½2.4M
5.1½2.4M
0.2½2M
0.2½2M
0.2½5.1M
0.2½2.4M
0.2½5.1M
0.2½5.1M
F：±1％
E24・E96
100½100k
100½200k
0.2½2M
0.2½2M
0.2½5.1M
0.2½4.7M
0.2½5.1M
0.2½5.1M
0.2½6.8M
250V
300V
350V
500V
600V
700V
700V
700V
1000V
＋70℃
－55℃½
0
＋165℃
Max.
Working
Voltage
200V
Max.
Overload
Voltage
400V
Dielectric
Withstanding
Voltage
500V
Rated Ambient
Temperature
Operating
Temperature
Range
－25℃½
0
＋85℃
RNS1/8
（RN55）
RNS1/4
（RN60）
RNS1/2
（RN65）
RNS 1
（RN70）
0.125W
0.25W
0.5W
1W
Rated voltage＝
√￣￣￣￣￣￣￣￣￣￣￣￣
or Max. working voltage, whichever is lower.
Power Rating×Resistance value
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
Percent rated power ％）
（
80
60
40
20
0
-60 -40
-55
-20 0
-25
20
40
60 80 100 120 140 160165
②
②
①
①
70 85
Ambient temperature
（℃）
①T.C.R.：Y
（±5×10
−6
/K）T
, （±10×10
−6
/K）
−6
, （±50×10
−6
/K）
②T.C.R.：E
（±25×10 /K）C
For resistors operated at an ambient temperature of 70℃ or higher, the power shall be derated
in accordance with the above derating curve.
■Performance
Test Items
Resistance
T.C.R.
Overload
（Short time）
Resistance to soldering heat
Rapid change of temperature
Moisture resistance
Endurance at 70℃
Performance Requirements
ΔR±
（％＋0.05Ω）
Limit
Within specified tolerance
Within specified T.C.R.
0.25
0.2
0.2
0.75
0.5
Typical
—
—
0.15
0.075
0.075
0.5
0.35
25℃
Y, T：＋25℃/＋65℃
E, C：＋25℃/＋125℃
Rated voltage×2.5 or Max. overload vol., whichever is lower, for 5s.
350℃±10℃, 3.5s±0.5s
－55℃
（30min.）/＋85℃
（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
Test Methods
Super Precision Type Resistors
Super Precision Type Resistors
■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.
