EU
METAL FILM
RoHS
MF Coat-Insulated Fixed Metal Film Resistors
Construction
Coating colorLight gray
MarkingColor code
Features Dimensions
T.C.R.
Dimensionsmm Weightg
Type L C Max. D dNominal 3 1000pcs
0.2
MFS1/4 3.20.2 3.4 1.7 0.1. 0.45 120
MF1/4 215
6.30.5 7.1 2.30.3 28
RoHS
MFS1/2 0.60 215
AEC-Q200 MF1/2
MF1/2 9.01.0 11.1 3.50.4 360
High precision and low T.C.R. metal film resistors.
Automatic insertion is applicable.
Lead length changes depending on taping and forming type.
Various formings are available.
Excellent stability for a long time.
Reference Standards
Products meet EU-RoHS requirements.
AEC-Q200 Qualified (Exemption MF1/2).
IEC 60115-1
JIS C 5201-1
EIAJ RC-2137
Type Designation
Example
MF 1/4 D C T52 A 1002 F
Product Power T.C.R. Terminal Taping & Packaging Nominal Resistance
6
Code Rating 10 /K Surface Material Forming Resistance Tolerance
S1/40.25W C 50 CSnCu A D, F4 digits D0.5
1/40.25W D100 See table AAMMO G3 digits F1
S1/20.5W L200 below R G2
1/20.5W RREEL
Nil: BOX
EU-RoHS
APPENDIX C
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
Axial Taping Radial Taping U Forming M Forming
Type
T26 T52 VT VTP VTE MT U M5 M10 M12.5 M15
MFS1/4C M5F M5R
MF1/4C M10F M12.5R
MFS1/2C M10R
MF1/2C M12.5R M15R
T.C.R.
Ratings
/
Resistance Range Dielectri
Power Max. Max. Taping & Q'ty/AMMO
Type T.C.R. Withstanding
Rating D0.5 F1 G2 Working Overload pcs
6
10 /K Voltage
E24E192 E24E96 E24 Voltage Voltage T26A T52A
MFS1/4CC C50 3,000 3,000
0.25W 49.9562k 101M 300V
MFS1/4DC D100 3,000 3,000
MF1/4CC C50 250V 500V 2,000 2,000
102.21M 102.21M
MF1/4DC 0.25W D100 2,000 2,000
MF1/4LC L 200 1.010 0.5110 500V 2,000 2,000
MFS1/2CC C50 2,000 2,000
0.5W 101M 102.2M 102.2M
MFS1/2DC D100 2,000 2,000
MF1/2CC C50 104.99M 350V 700V 2,000
105.05M
MF1/2DC 0.5W D100 105.11M 700V 2,000
MF1/2LC L 200 1.010 0.5110 2,000
Rated Ambient Temperature :70
Operating Temperature Range :55155
Rated voltage Power RatingResistance value or Max. working voltage, whichever is lower.
Oct. 2014
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. www.koanet.co.jp
Low Power Type Resistors
Low Power Type Resistors
Derating Curve
70
For resistors operated at an ambient temperature of 70 or above, a power
rating shall be derated in accordance with the above derating curve.
Performance
Performance Requirements
R0.05
Test Items Test Methods
Limit Typical
25
Resistance Within specified tolerance
25/ 125
T.C.R. Within specified T.C.R.
2.55MFS1/4, MF1/4, MF1/2
25MFS1/2
0.5 0.3
OverloadShort time Rated voltage2.5 or Max. overload vol., whichever is lower, for 5sMFS1/4, MF1/4, MF1/2
Rated voltage2 or Max. overload vol., whichever is lower, for 5sMFS1/2
0.75MFS1/4 0.4MFS1/4
2605, 10s1s
Resistance to soldering heat 0.5MF1/4, MFS1/2, MF1/2 0.25MF1/4, MFS1/2, MF1/2
1.0 0.3 5530min./15530min.5 cycles
Rapid change of temperature
1.5MFS1/4 1MFS1/4 402, 90%95%RH, 1000h
Moisture resistance 1MF1/4, MFS1/2, MF1/2 0.75MF1/4, MFS1/2, MF1/2 1.5 ON/ 0.5 OFF 1.5h ON/ 0.5h OFF cycle
70 1.5MFS1/4 1MFS1/4 702, 1000h
Endurance at 70 1MF1/4, MFS1/2, MF1/2 0.75MF1/4, MFS1/2, MF1/2 1.5 ON/ 0.5 OFF 1.5h ON/ 0.5h OFF cycle
Precautions for Use
RMA
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.
Oct. 2014
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. www.koanet.co.jp