Resistors TRIMMABLE CHIP RK73N Trimmable Flat Chip Resistors Construction L c c W t d Features 3 Chip resistors available for function trimming. Smaller and lighter than trimmer potentiometers. Metal glaze thick film makes excellent heat resistance and moisture resistance. High stability and reliability are ensured by the triple layers of the electrodes. Automatic mounting machine can be applied with taping supply. Suitable for both flow and reflow solderings. Type Inch Size Code 1E0402 1J0603 2A0805 2B1206 2E1210 2H2010 3A2512 Ni plating Solder plating Ceramic substrate Dimensions Dimensions mm W c d 0.50.05 0.20.1 0.25 0.05 -0.1 . 0.80.1 0.30.1 0.30.1 1.250.1 0.40.2 0.3 0.2 -0.1 . 1.60.2 2.60.2 0.2 0.50.3 0.4 -0.1 . 2.50.2 3.10.2 L 1.0 0.1 -0.05 . 1.60.2 2.00.2 3.20.2 5.00.2 6.30.2 Protective coating Resistive film Inner electrode t 0.330.05 0.450.1 0.50.1 0.60.1 Weightg 1000pcs 0.68 2.14 4.54 9.14 15.5 24.3 37.1 Type Designation Example Old Type RK73N 2B New Type RK73N 2B Product Code Reference Standards IEC 60115-8 JIS C 5201-8 EIAJ RC-2134A TD 10k N T TD 103 N Power Rating Terminal Surface Material Taping Nominal Resistance Resistance Tolerance 1E:0.063W 1J:0.1W 2A:0.125W 2B:0.25W 2E:0.33W 2H:0.75W 3A:1W TSn LSn/Pb TP: 2mm pitch punch paper TD: 4mm pitch punch paper TE: 4mm pitch plastic embossed BK:Bulk 3 digits N :0-20% P :0-30% W:10% M:20% APPENDIX C For further information on taping, please refer to APPENDIX C on the back pages. Ratings Type 1E 1J 2A 2B 2E 2H 3A Power Rating 0.063W 0.1W 0.125W 0.25W 0.33W 0.75W 1.0W Resistance Resistance Range E12 Tolerance 101M New Type N :0-20 P :0-30 W:10 M:20 Old Type K :0-30 M:20 Max. Working Max. Overload Voltage Voltage 50V 100V 100V 200V T.C.R. x10-6/K 200 200V 400V / Taping & Q ty/Reelpcs TP TD TE 10,000 10,000 5,000 10,000 5,000 4,000 5,000 4,000 5,000 4,000 4,000 4,000 Rated Ambient Temperature70 Operating Temperature Range-55125 x Rated voltage Power RatingxResistance value or Max. working voltage, whichever is lower. Power ratings are changed by total trimmed length. 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 Derating Curve Resistors Percent rated power 100 80 60 40 20 0 -60 -40 -20 0 20 40 60 80 100120 140 -55 70 125 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. Performance Performance Requirements R 0.05 Test Items Test Methods Limit Typical Resistance Within specified tolerance 25 T.C.R. Within specified T.C.R. 25 / -55 and 25 / 125 OverloadShort time 2 0.3 x 2.5 5 Rated voltage x 2.5 for 5s Resistance to soldering heat 1 0.3 2605, 10s1s Rapid change of temperature 0.5 0.3 -55 30min. /125 30min.5 cycles Moisture resistance 3 0.5 402, 90%95%RH, 1000h 1.5 ON / 0.5 OFF 1.5h ON / 0.5h OFF cycle 70 Endurance at 70 3 1 702, 1000h 1.5 ON / 0.5 OFF 1.5h ON / 0.5h OFF cycle Low temperature exposure 1 0.3 -55, 1h High temperature exposure 1 0.3 125, 1000h Applications x2 The Trimmable chip resistor is suitable for the circuit demanding high stability as a replacement of variable resistors for adjusting circuit. Please note that customers need laser trimming equipment. Trimming shall be performed by laser. The resistance rising limits the initial resistance value up to 2 times and the rising rate differs on trimming patterns as shown at the right. Resistance rising rate Initial resistance increase of magnification R/R Magnification 2 Single cut L cut Double reverse cut 1.5 Double cut 1 0 0.5 W /W (W =Total trimmed length) Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1 W www.koanet.co.jp