RK73H Flat Chip Resistors (Precision Grade) Construction L c c W t d 1H , 1E, 1J, 2A, 2B, 2E, 2H, 3A Coating colorBlack1H , Blue1E, 1J, 2A, 2B, 2E, 2H, 3A Features 3 Small size and light weight. RoHS RoHS 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, bulk case, etc. Suitable for both flow and reflow solderings. Products with lead free termination meet RoHS requirements. RoHS regulation is not intended for Pbglass contained in electrode, resistor element and glass. Old Type Type Inch Size Code 1H 0201 1E 0402 1J 0603 2A 0805 2B 1206 2E 1210 2H 2010 3A 2512 L New Type RK73H 2B Product Code T Power Terminal Rating Surface Material 1H0.05W TSn 1E0.063W GAu1 1J 0.1W LSn/Pb 2A0.125 2B0.25W 2E0.33W 0.5W 2H0.75W 3A1W Ni plating Solder plating Ceramic substrate Dimensions mm W c d Weightg 1000pcs t 0.30.03 0.10.05 0.150.05 0.230.03 0.14 1.0 0.1 . -0.05 0.50.05 0.20.1 0.25 0.05 -0.1 . 0.350.05 0.68 1.60.2 0.80.1 0.30.1 0.30.1 0.450.1 2.14 2.00.2 1.250.1 0.40.2 0.3 0.2 . -0.1 0.50.1 4.54 1.60.2 9.14 0.4 0.2 . -0.1 3.20.2 2.60.2 15.5 0.50.3 5.00.2 0.60.1 2.50.2 24.3 0.650.15 6.30.2 3.10.2 37.1 Derating Curve 100 TD 10k F TD 1002 F Taping Nominal Resistance 4 digits Resistance Tolerance D0.5% F1% TCTCM2mm pitch press paper TP2mm pitch punch paper TD4mm pitch punch paper TE4mm pitch plastic embossed BCBulk case BKBulk 0.60.03 Type Designation 2B Dimensions Example RK73H Protective coating Resistive film Inner electrode 1 1E1J2A101M 1 Products with gold plated electrodes are also available with 1E, 1J and 2A types 101M , so please consult with us. APPENDIX C For further information on taping, please refer to APPENDIX C on the back pages. Percent rated power Flat Chip Resistors THICK FILMPRECISION 1H 80 1E,1J,2A,2B, 2E,2H,3A 60 40 20 0 -60 -40 -20 0 20 40 60 80 100 120 140 160 -55 70 125 155 Ambient temperature 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. Reference Standards IEC 60115-8 JIS C 5201-8 EIAJ RC-2134A Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. www.koanet.co.jp Type 1H 1E 1J 2A Ratings T.C.R. x10-6/K 200 400 200 100 400 200 100 Power Rating 0.05W 0.063W 0.1W 400 0.125W 100 400 2B 0.25W 200 100 0.5W 400 2E 0.33W 200 0.5W 0.33W 100 400 2H 0.75W 200 100 400 3A 1.0W 200 100 Resistance Range D:0.5% E24E96 101M2 10976k 101M F:1% E24E96 101M2 1.09.76 1.02M10M 101M 1.09.76 1.02M10M 101M 1.09.76 1.02M10M 101M 101M 1.09.76 5.62M10M 1.02M5.6M 101M 101M 1.09.76 5.62M10M 1.02M5.6M 101k 101k 1.02k1M 1.02k1M 1.09.76 5.62M10M 1.02M5.6M 101M 101M 1.09.76 5.62M10M 1.02M5.6M 101M 101M Max. Working Voltage 25V 50V 150V 200V Max. Overload Voltage 50V Packaging & Q'ty/Reel or Case Bulk Case Taping TC 10,000 TCM 15,000 TP TD TE BC 10,000 10,000 5,000 25,000 10,000 5,000 4,000 10,000 5,000 4,000 5,000 5,000 4,000 4,000 4,000 100V 200V 400V Rated Ambient Temperature :70 Operating Temperature Range :-551251H -551551E1J2A2B2E2H3A x Rated voltage Power RatingxResistance value or Max. working voltage, whichever is lower. 2 RK73H1HD0.5F1E24 2 The nominal resistance value for RK73H1HD0.5, F1is E24. Performance Performance Requirements R 0.05 Limit Typical Within specified tolerance Within specified T.C.R. Test Items Resistance T.C.R. OverloadShort time 2 Resistance to soldering heat Rapid change of temperature Moisture resistance 70 Endurance at 70 Low temperature exposure High temperature exposure 0.5 Test Methods 25 25 / -55 and 25 / 125 x 2.5 5 Rated voltage x 2.5 for 5s 11H 0.751H 1E3A10R1M 11E3AR10, R1M 2605, 10s1s 31E3AR10, R1M 0.5another 0.5 0.3 -55 30min. /125 30min.100 cycles 21J, 2A, 2B 3another 21J, 2A, 2B 3another 0.751J, 2A, 2B 1another 0.751J, 2A, 2B 1another 402, 90%95%RH, 1000h 1.5 ON / 0.5 OFF 1.5h ON / 0.5h OFF cycle 702, 1000h 1.5 ON / 0.5 OFF 1.5h ON / 0.5h OFF cycle 1 0.3 -55, 1h 1 0.3 125, 1000h1H 155, 1000h1E, 1J, 2A, 2B, 2E, 2H, 3A Precautions for Use 2H3A (FR-4) 1H2E2H3A The substrate of chip resistors are 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 2H/3A 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 1H2E, but the crack tends to occur in the types of 2H/3A. 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. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. www.koanet.co.jp Flat Chip Resistors