Flat Chip Resistors THICK FILMPRECISION RK73H EU RoHS Flat Chip Resistors (Precision Grade) Construction L c c W t d Coating colorBlack1F, 1H , Blue1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2 Features Small size and light weight. Excellent heat resistance and weather resistance are ensured by the use of metal glaze thick film. High stability and high reliability with the triple-layer structure of electrode. Applicable to various kinds of automatic mounters for taping, etc. Suitable for both flow and reflow solderings. Products with lead free termination meet EU-RoHS requirements. EU-RoHS regulation is not intended for Pb-glass contained in electrode, resistor element and glass. AEC-Q200 qualified (Exemption 1F). Reference Standards IEC 60115-8 JIS C 5201-8 EIAJ RC-2134C 1F Power Rating 0.03W Rated Ambient Rated Terminal T.C.R. Temp. Part Temp. x10-6/K 70 -- 0.05W 70 125 1E 0.1W 70 125 1J 0.125W 70 125 2A 0.25W 70 125 2B 0.25W 70 125 200 250 200 400 100 200 100 200 100 200 100 200 400 100 200 400 100 2E 0.5W 70 125 200 400 100 W2H 0.75W 70 125 200 400 100 W3A 1W 70 125 200 400 100 W3A2 2W5 Type L Inch Size Code 1F 01005 0.40.02 1H 0201 0.60.03 1E 0402 1.0 0.1 -0.05 1J 0603 1.60.2 2A 0805 2.00.2 2B 1206 3.20.2 2E 1210 1 W2H 2010 5.00.2 1 W3A 2512 6.30.2 1 W3A2 2512 Dimensions mm Weight g W c d t 1000pcs 0.20.02 0.100.03 0.110.03 0.130.02 0.04 0.30.03 0.10.05 0.150.05 0.230.03 0.14 0.05 0.50.05 0.20.1 0.25 -0.1 0.350.05 0.68 0.80.1 0.30.1 0.30.1 0.450.1 2.14 0.2 0.50.1 4.54 1.250.1 0.40.2 0.3 -0.1 9.14 1.60.2 0.4 0.2 -0.1 2.60.2 15.5 2.50.2 0.60.1 24.3 0.50.3 0.650.15 3.10.2 37.1 1 RK73H 2H, 3A and 3A2 are also still available (different" d"dimensions=0.40.2 -0.1 mm) Type Designation Example RK73H 2B T TD 1002 F Product Code Power Rating Terminal Surface Material Taping Nominal Resistance Resistance Tolerance 4 digits D0.5% F1% TSn TX4mm widthGAu2 1mm pitch plastic LSn/Pb3 embossed TBLTCTCM 2mm pitch press paper TPLTP 2mm pitch punch paper TD4mm pitch punch paper TE4mm pitch plastic embossed BKBulk 2 Products with gold plated electrodes are also available with 1E, 1J and 2A types101M , so please consult with us. 3 W ith type 1F, 1H, W2H, W3A, W3A2 only T is available as the terminal surface material. The terminal surface material lead free is standard. 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. 1H 0.1W Protectivecoating Niplating Resistivefilm Solderplating Innerelectrode Ceramicsubstrate Dimensions 1F0.03W 1H0.05W 1E0.1W 1J 0.1W 0.125 2A0.25 2B0.25W 2E0.5W W2H0.75W W3A1W W3A22W5 Ratings Type 70 95 200 400 Resistance Range D:0.5% F:1% E24E96 E24E96 100k2M4 -- 1091k4 101M 1010M4 -- 19.14 101M 101M 19.76 -- 1.02M10M 1.02k1M 1.02k1M -- 1.02M10M 101k 101k -- 19.76 101M 101M 19.76 -- 1.02M10M 101M 101M 19.76 1.02M5.6M -- 5.62M10M 101M 101M 19.76 1.02M5.6M -- 5.62M10M 101M 101M 19.76 1.02M5.6M -- 5.62M10M 101M 101M 19.76 1.02M5.6M -- 5.62M10M 101M 101M 19.76 1.02M5.6M -- 5.62M10M Max. Working Voltage Max. Overload Voltage 20V 30V 25V 75V 150V 200V 50V Packaging & Q'ty/Reel pcs TX TBL TCTCM TPLTP TD TE 40,000 20,000 -- -- -- -- -- -- TC 10,000 TCM15,000 -- -- -- -- -- -- TPL20,000 TP 10,000 -- -- -- -- -- TP 10,000 5,000 -- -- -- -- TP 10,000 5,000 4,000 -- -- -- -- 5,000 4,000 -- -- -- -- 5,000 4,000 -- -- -- -- -- 4,000 100V 200V 400V 200V 400V -- -- -- -- -- 4,000 200V 400V -- -- -- -- -- 4,000 Operating Temperature Range :-551251F -551551H1E1J2A2B2EW2HW3AW3A2 Rated voltage Power RatingxResistance value or Max. working voltage, whichever is lower. For flat chip jumper resistor, please refer to RK73Z series. 4 The nominal resistance value for RK73H1F F1% and RK73H1H1R9.1, 1MR10Mis E24. 5 I f you use at the rated power, please keep the condition that the terminal of the resistor is below the rated terminal part temperature. Please refer to the derating curves based on the terminal temperature of right side on the next page. If any questions arise whether to use the"Rated Ambient Temperature"or the"Rated Terminal Part Temperature"in your usage conditions, please give priority to the"Rated Terminal Part Temperature" . For more details, please refer to"Introduction of the derating curves based on the terminal part temperature"on the beginning of our catalog. While using under high power, the temperature of the product may increase depending on the condition of heat dissipation from PCB. Be sure to check the terminal part temperature as well as precautions to use on delivery specifications before 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. Malfunction or failure of the products in such applications may cause loss of human life or serious damage. Jan. 2020 www.koaglobal.com Ambient temperature 40 20 0 20 40 60 125 60 40 20 0 -60 -40 -20 155 -55 For resistors operated at an ambient temperature of 70 or higher, the power shall be derated in accordance with the above derating curve. 0 20 40 60 RK73H 2A-2E RK73H 1F-1J 1E 35 Temperature Rise 1J 1E 30 1H 25 1F 1H 20 1F 15 10 90 2E 80 2E 2B 2A 60 2B 50 2A 40 30 10 0 0 50 75 100 0 20 40 60 80 100 120 140 160 95 Terminalparttemperature 155 Regarding the temperature rise, the value of the temperature varies per conditions and board for use since the temperature is measured under our measuring conditions. W3A2 W3A2 70 5 25 -55 155 250 200 W3A W2H 150 W3A 100 W2H Measurement condition Room temperature: 25 PCB: FR-4t = 1.6mm 20 Power Rating% 20 RK73H W2H-W3A2 Temperature Rise [] 1J 40 40 300 100 45 0 125 60 0 -60 -40 -20 80 100 120 140 160 70 Terminalparttemperature 80 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. Temperature Rise Temperature Rise 80 80 100 120 140 160 70 Ambienttemperature 1H,1E,1J,2A,2B,2E, W2H,W3A1W Percentratedpower Percentratedpower Percentratedpower 60 -55 100 100 1H,1E,1J,2A,2B 2E,W2H,W3A1W, W3A22W 1F 80 0 -60 -40 -20 Terminal part temperature RK73H W3A2 Terminal part temperature 100 Flat Chip Resistors Derating Curve Cu foil thickness: 35m 50 Hot spot 0 25 50 75 Power Rating% 0 100 Terminal 0 25 50 75 Power Rating% 100 One-Pulse Limiting Electric Power RK73H 2B-W3A2 10 2A 1 1J 1E 0.1 1H 1F 0.01 0.001 0.01 0.1 1 10 Pulse Durationms 100 1000 One-Pulse Limiting Electric PowerW One-Pulse Limiting Electric PowerW RK73H 1F-2A 100 1000 100 W3A/W3A2 2H/W2H 10 2E 2B 1 0.001 0.01 0.1 1 10 100 1000 Pulse Durationms The maximum applicable voltage is equal to the max. overload voltage. Please ask us about the resistance characteristic of continuous applied pulse. The pulse endurance values are not assured values,so be sure to check the products on actual equipment when you use them. Performance Performance RequirementsR0.1 Limit Typical Resistance Within specified tolerance -- T.C.R. Within specified T.C.R -- 11F Overload Short time 2 0.5others 11FW3A10R1M 0.51FW3A10R1M Resistance to soldering heat 31HW3AR10, R1M 11HW3AR10, R1M 11F 0.51F Rapid change of temperature 0.5others 0.3others 0.751J, 2A, 2B 21J, 2A, 2B Moisture resistance 1.51F 3others 1others 21J, 2A, 2B 0.751J, 2A, 2B Endurance at 70 or rated terminal part temperature 3others 1others 0.51F High temperature exposure 1 0.3others Test Items Test Methods 25 25 /-55 and 25 /125 Rated voltagex2.5 for 5s 1E, 2B, W3A2Rated voltagex2 for 5s 2605, 10s1s -5530min./12530min.100 cycles 402, 90%95%RH, 1000h 1.5h ON/0.5h OFF cycle 702 or rated terminal part temperature 2 1000h 1.5h ON/0.5h OFF cycle 125, 1000h1F 155, 1000h1H, 1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2 Precautions for Use The substrate of chip resistors is alumina. Cracks may occur at the connection of solder (solder fillet portion) due to the difference of the coefficient of thermal expansion from a mounting board when heat stress like heat cycle, etc. are repeatedly given to them. Care should be taken to the occurrence of the cracks when the change in ambient temperature or ON /OFF of load is repeated, especially when large types of W2H/W3A/W3A2 which have large thermal expansion and also self heating. By general temperature cycle test using glass-epoxy (FR-4) boards under the maximum/minimum temperatures of operating temperature range, the crack does not occur easily in the types of 1F2E, but the crack tends to occur in the types of W2H/W3A/W3A2. The occurrence of the crack by heat stress may be influenced by the size of a pad, solder volume, heat radiation of mounting board etc., so please pay careful attention to designing when a big change in ambient temperature and conditions for use like ON/OFF of load can be assumed. Care should be taken that RK73H1F may be damaged when static electricity occurs and is applied in the equipment. 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. Jan. 2020 www.koaglobal.com