METAL FILM
EU
RoHS
MF
涂层绝缘型金属膜固定电阻器
Coat-Insulated Fixed Metal Film Resistors
■ 结构图
Construction
C
d
L
Marking
Insulation coating
Trimming line
Ceramic core
Electrode cap
Lead wire
Resistive film
D
外观颜色：浅灰色
Coating color：Light gray
表示：颜色代码
Marking : Color code
■ 特点
Features
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是高精度、½T.C.R.的金属膜电阻器。
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可以自动插入。
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可以进行各种成½加工。
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长期稳定性优异。
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符合欧盟RoHS。
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AEC-Q200相关数据已取得。
（MF1/2除外）
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High precision and low T.C.R. metal film resistors.
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Automatic insertion is applicable.
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Various formings are available.
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Excellent stability for a long time.
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Products meet EU-RoHS requirements.
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AEC-Q200 qualified (Exempition MF1/2).
■ 外½尺寸
Dimensions
型号
Type
MFS1/4
MF1/4
MFS1/2
MF1/2
L
3.2±0.2
6.3±0.5
9.0±1.0
尺寸
Dimensions
（mm）
C Max.
D
d (Nominal)
3.4
1.7
+0.2
0.45
–0.1
7.1
11.1
2.3±0.3
3.5±0.4
0.6
±3
※
28
Weight (g)
(1000pcs)
120
215
215
360
※ 引线长度按照成型和编带不同而改变。
※
Lead length changes depending on taping and forming type.
½功率型电阻器
Low Power Type Resistors
■ 参考标准
Reference Standards
IEC 60115-2
JIS C 5201-2
EIAJ
RC-2137
■ 品名构成
Type Designation
实例
MF
Product
Code
Example
1/4
Power
Rating
S1/4 0.25W
1/4 0.25W
S1/2 0.5W
1/2 0.5W
D
T.C.R.
×10
6
/K
C ±50
D ±100
L ± 200
C
Termina
l
Surface Material
C SnCu
T52
Taping &
Forming
See table
below
A
Packing
A AMMO
A AMMO
R
R REEL
Nil BOX
1002
Nominal
Resistance
D, F 4 digits
G 3 digits
F
Resistance
Tolerance
D ± 0.5
F ±1
G ±2
欲知关于此产品含有的环境负荷物质详情（除EU-RoHS以外），请与我们联系。
编带细节请参考卷末附½C。
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.
■ 二次加工对应表
Taping & Forming Matrix
型号
Type
MFS1/4□C
MF1/4□C
MFS1/2□C
MF1/2□C
½向编带
Axial Taping
T26
T52
○
○
○
○
○
○
○
–
VT
○
○
○
–
径向编带
Radial Taping
VTP
VTE
–
–
○
○
○
○
–
–
MT
○
–
–
–
U成½
U Forming
U
○
○
–
–
M5
M5F
–
–
–
M5R
–
–
–
M成½
M Forming
M10
–
M10F
M10R
–
M12.5
–
M12.5R
–
M12.5R
M15
–
–
–
M15R
□：T.C.R.
■ 额定值
Ratings
型 号
Type
MFS1/4CC
MFS1/4DC
MF1/4CC
MF1/4DC
MF1/4LC
MFS1/2CC
MFS1/2DC
MF1/2CC
MF1/2DC
MF1/2LC
额定功率
Power
Rating
0.25W
0.25W
0.5W
0.5W
电阻温度系数
T.C.R.
(×10
-6
/K)
C：±50
D：±100
C：±50
D：±100
L：±200
C：±50
D：±100
C：±50
D：±100
L：±200
电阻值范围
Resistance Range（Ω）
D:
±0.5%
F:±1%
G:
±2%
E24
E24 • E192
E24 • E96
49.9½562k
10½2.21M
–
10½1M
10½5.05M
–
10½1M
10½2.21M
1.0½10
10½2.21M
10½4.99M
10½5.11M
1.0½10
–
–
0.51½10
10½2.21M
–
0.51½10
350V
700V
700V
–
250V
500V
500V
最高½用电压
Max. Working
Voltage
最高过½½电压
Max. Overload
Voltage
耐电压
Dielectric
Withstanding
Voltage
300V
编带和包装数/AMMO包装
Taping & Q'ty/AMMO (pcs)
T26A
3,000
3,000
2,000
2,000
2,000
2,000
2,000
T52A
3,000
3,000
2,000
2,000
2,000
2,000
2,000
2,000
2,000
2,000
额定环境温度
Rated Ambient Temperature
：+70℃
½用温度范围
Operating Temperature Range：-55℃½+155℃
额定电压是
√
额定功率×公称电阻值所算出的值或表中最高½用电压两者中小的值为额定电压。
Rated voltage =
√
Power Rating×Resistance value or Max. working voltage, whichever is lower.
本产品目½中记½½的产品规格如有变更，恕不一一奉告。订购以及½用之前，请仔细确认规格表的内容。
用于½½½设备、医疗设备、航空设备以及其它涉及人身安全、或可½引起重大损失的设备上时，请务必事先与我公司联系。这些产品在这类用途中出现故障或失灵可½导致人身事故或严重损坏。
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.
Malfunction or failure of the products in such applications may cause loss of human life or serious damage.
Nov. 2017
www.koaglobal.com
■ 负荷减½特性曲线
Derating Curve
100
Percent rated power
80
60
40
20
0
-60 -40 -20
-55
0
20
60 80 100 120 140 160
70
155
Ambient temperature
40
在环境温度70℃以上½用时，应按照上图负荷减½特性曲线，减小额定功率。
For resistors operated at an ambient temperature of 70ºC or above, a power rating shall be
derated in accordance with the above derating curve.
■ 性½
Performance
试验项目
Test Items
电阻值
Resistance
电阻温度系数
T.C.R.
标准值
Performance Requirements
ΔR±（％＋0.05
Ω）
保证值
Limit
在规定的允许偏差内
Within specified tolerance
在规定值以内
Within specified T.C.R.
代表值
Typical
–
–
试验方法
Test Methods
＋25℃
＋25℃/＋125℃
额定电压×2.5倍或最高过½½电压½的一方½加5秒钟。：MFS1/4,
MF1/4, MF1/2
额定电压×2倍或最高过½½电压½的一方½加5秒钟。：MFS1/2
Rated voltage
×2.5
or Max. overload vol., whichever is lower, for
5s : MFS1/4, MF1/4, MF1/2
Rated voltage
×2
or Max. overload vol., whichever is lower, for 5s
: MFS1/2
260℃±5℃, 10s±1s
－55℃（30min.）/＋155℃（30min.）5
cycles
40℃±2℃, 90%½95%RH, 1000h
1.5小时ON、0.5小时OFF的周期 1.5h ON/0.5h OFF cycle
70℃±2℃, 1000h
1.5小时ON、0.5小时OFF的周期 1.5h ON/0.5h OFF cycle
½功率型电阻器
Low Power Type Resistors
过½½（短时间）
Overload（Short time）
0.5
0.3
耐焊接热
Resistance to soldering heat
温度突变
Rapid change of temperature
耐湿负荷
Moisture resistance
在70℃时的耐久性
Endurance at 70℃
0.75：MFS1/4
0.5：MF1/4, MFS1/2, MF1/2
1.0
1.5：MFS1/4
1：MF1/4, MFS1/2, MF1/2
1.5：MFS1/4
1：MF1/4, MFS1/2, MF1/2
0.4：MFS1/4
0.25：MF1/4, MFS1/2, MF1/2
0.3
1：MFS1/4
0.75：MF1/4, MFS1/2, MF1/2
1：MFS1/4
0.75：MF1/4, MFS1/2, MF1/2
■ ½用注意事项
Precautions for Use
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助焊剂等在本产品和安装的印刷电路板上附着离子性杂质时，其耐湿性•耐腐蚀性将受到½响。助焊剂内有时含有氯•酸等离子性物质，为除去这
些离子性物质应进行清洗。特别是½用无铅助焊剂时，由于湿润性提高了，有时会含有大量离子性物质，所以在½用RMA系的焊锡或助焊剂时，
应充分进行清洗。并且，保管环境和安装条件、环境等，附着了汗•盐等离子性物质时，其耐湿性•耐腐蚀性也将受到½响。对于这种污染，为了
除去这些离子性物质，应½进行清洗。
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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.
本产品目½中记½½的产品规格如有变更，恕不一一奉告。订购以及½用之前，请仔细确认规格表的内容。
用于½½½设备、医疗设备、航空设备以及其它涉及人身安全、或可½引起重大损失的设备上时，请务必事先与我公司联系。这些产品在这类用途中出现故障或失灵可½导致人身事故或严重损坏。
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.
Malfunction or failure of the products in such applications may cause loss of human life or serious damage.
Nov. 2017
www.koaglobal.com
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