EU RoHS CARBON FILM CF Coat-Insulated Fixed Carbon Film Resistors Construction C T T L D Marking Electrode cap Insulation coating Lead wire Trimming line Resistive film Ceramic core CFS1/4 Dimensions Coating colorCFS1/4-Ivory Others-venetian red Dimensions mm 3 Weight (g) Marking : Color code Type L C Max. D d (Nominal) (1000pcs) Standard Long +0.2 CFS1/4 3.20.2 3.4 1.7 0.45 80 Features 0.1 1 2 14 min. 20 min. CF1/4 6.10.5 7.1 2.30.3 0.6 160 z CFS1/2 6.30.5 7.1 2.850.3 0.6 290 20 min. z CFB1/2 9.0 1.0 11.0 3.5 0.5 0.7 520 z 1 S 3 z 1 Forming code S is applied for bulk type. 3 Lead length changes depending on taping and forming type. 2 Long z 1/4W CFS 1/4 2 Long type is custom-made. z RoHS z General-purpose lead-type resistors. Type Designation z Automatic insertion is applicable. Example z Various types of formings are available. CF 1/4 C T52 A 103 J z Stronger in pulse resistance than chip resistors of the same power. z The smaller type of 1/4W(CFS 1/4) is available. Product Power Terminal Taping & Packaging Nominal Resistance z Products meet EU-RoHS requirements. Code Rating Surface Material Forming Resistance Tolerance S1/4 : 0.25W C : SnCu A : AMMO 3 digits G:2% Reference Standards 1/4 : 0.25W See table A : AMMO J :5% IEC 60115-2 B1/2 : 0.5W below R : S1/2 : 0.5W R : REEL JIS C 5201-2 : EIAJ RC-2136 Nil : BOX EU-RoHS 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, please refer to APPENDIX C on the back pages. Taping & Forming Matrix U M Straight Axial Taping Radial Taping U Forming M Forming Type S Nil T26 T52 VT MT MHT VTP VTE U UCL M5 M10 M12.5 M12.5 1 2 CFS 1/4 M5F 1 2 CF 1/4 M10H M12.5H CFS 1/2 M10H CFB 1/2 M12.5K Ratings /AMMO -6 Power Resistance RangeE24 T.C.R.10 /K Max. Working Max. Overload Dielectric Taping & Q ty/AMMO (pcs) Type Rating 350450 0700 01000 01300 Voltage Voltage Withstanding Voltage T26A T52A G: 2% J:5% CFS 1/4 0.25W 10330k 2.21M 2.247k 51k100k 110k330k 360k1M 250V 500V 300V 5,000 3,000 CF 1/4 0.25W 2.2 5.1M 2.2 100k 110k 330k 360k 1M 1.1M 5.1M 300V 600V 500V 2,000 CFS 1/2 0.5W 101M 1.05.1M 1.091k 100k1M 1.1M2.2M 2.4M5.1M 350V 700V 2,000 700V CFB 1/2 0.5W 2.25.1M 2.2100k 110k1M 1.1M2.2M 2.4M5.1M 400V 800V Rated Ambient Temperature +70 Operating Temperature Range-55 +155 Rated voltage = Power RatingResistance value or Max. working voltage, whichever is lower. Nov. 2018 Specications given herein may be changed at any time without prior notice. Please conrm technical specications 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.koaglobal.com Low Power Type Resistors d Low Power Type Resistors Derating Curve 70 100 For resistors operated at an ambient temperature of 70C or above, a power rating shall be derated in accordance with the left derating curve. 80 60 40 20 0 -60 -40 -20 0 20 40 60 80 100 120 140 160 -55 70 155 Ambient temperature C Surface Temperature Rise Load Life At 701000Hr +2 60 CFS1/4 50 +1 CFS1/2 40 CFB1/2 CFS1/4 30 0 CF1/4 20 -1 10 0 -2 0 25 50 75 100 10 100 1k 10k 100k 1M Power Rating Ratio Resistance Performance Performance Requirements R0.05 Test Items Test Methods Limit Typical 10mm1mm Resistance Within specied tolerance Measuring points are at 10mm1mm from the end cap. 25/125 T.C.R. Within specied T.C.R. 2.55 1 0.5 Rated voltage2.5 or Max. overload vol., whichever is lower, for OverloadShort time 5s. 1 0.5 2605, 10s1s Resistance to soldering heat No lead-coming off and loose Twist 360, 5 times Terminal strength terminals 1 0.5 5530min./12530min.5 cycles Rapid change of temperature 40 2 , 90% 95%RH, 1000h 5 2.5 Moisture resistance 1.5 ON 0.5 OFF 1.5h ON/0.5h OFF cycle 70 702, 1000h 3 1.5 Endurance at 70 1.5ON0.5OFF 1.5h ON/0.5h OFF cycle Precautions for Use z RMA z 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. Nov. 2018 Specications given herein may be changed at any time without prior notice. Please conrm technical specications 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.koaglobal.com Percent rated power Surface temp. rise R/R