current sense dimensions and construction L Dimensions inches (mm) c c Size Resistance UR73V Code L W c d t Range () .028.008 W UR73VD 10m~16m (0.70.2) .079.008 .049.008 .016.008 .024.004 2A (2.00.2) (1.250.2) (0.40.2) .024.008 (0.60.1) (0805) 18m~36m Ni (0.60.2) t Plating .079.008 .049.008 .016.008 .024.004 UR73V 2A .016.008 39m~100m d Protective Resistive Inner (2.00.2) (1.250.2) (0.40.2) (0.40.2) (0.60.1) (0805) Coating Film Electrode .049.008 Ceramic 10m~13m (1.250.2) Substrate .045.008 UR73VD 15m~16m L (1.150.2) .126.008 .063.008 .016.012 .024.004 c c UR73VD 2B (3.20.2) (1.60.2) (0.40.3) (0.60.1) .043.008 (1206) 18m~20m (1.10.2) W .039.008 22m~27m (1.00.2) Solder .039.012 Plating 30m~33m t (1.00.3) Ni +.008 Plating UR73V .016 .035.012 -.004 .126.008 .063.008 .024.004 Resistive Inner d 2B 36m~39m (0.90.3) +0.2 Film Electrode (3.20.2) (1.60.2) (0.60.1) (0.4 ) (1206) -0.1 Protective .026.012 Ceramic Coating 43m~100m Substrate (0.650.3) UR73V low resistance, low T.C.R. flat chip resistor EU features Current detecting resistors for power supplies, motor circuits, etc. Low resistance (100m or under) and high accuracy (1%) for current detection -6 High reliability and performance with T.C.R. 75x10 /K Suitable for flow and reflow solderings Products will meet EU RoHS requirements AEC-Q200 qualified Derating Curve 100 100 2A 0.5W 2A 0.5W (100C) 80 2B 0.5W 80 2B 0.5W (125C) 2B 1W (110C) 60 60 40 40 20 20 0 0 -60 -40 -20 0 20 40 60 80 100 120 140 160 -60 -40 -20 0 20 40 60 80 100 120 140 160 -55 70 155 -55 110 125 155 Ambient Temperature Terminal Part Temperature (C) (C) For resistors operated at an ambient temperature of 70C or For resistors operated at a terminal part temperature of described for each size or above, above, the power rating shall be derated in accordance with the power rating shall be derated in accordance with the above derating curve. the above derating curve. Please refer to Introduction of the derating curve based on the terminal part temperature in the beginning of our catalog prior use. ordering information UR73V 2B T TD 30L0 F Power Termination Nominal Type Packaging Tolerance Rating Material Resistance UR73V 2A: 0.5W T: Sn TD: 4mm pitch R indicates decimal on values = F: 1% punch paper 100m Ex: R100 = 100m UR73VD: 2B: 0.5W Face-down L indicates decimal on values New 2B: 1W <100m Ex: 10L0 = 10m For further information on packaging, please refer to Appendix A. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/25/19 124 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com % Rated Power % Rated Power % UR73V low resistance, low T.C.R. flat chip resistor applications and ratings Rated Rated Operating Resistance Range Part Power* T.C.R. Resistance Ambient Terminal Temperature -6 () Designation Rating (X10 /K) Tolerance Temperature Temperature Range E24 & 25m, 50m UR73V 2A 0.5W 75 39m~100m 70C 100C 75 15m~36m 70C 100C UR73VD 2A 0.5W 12m~13m 0~+150 0~+250 10m~11m 33m~75m 75 0.5W 70C 125C -55C 30m, 82m~100m 100 to UR73V 2B F: 1% 75 33m~75m +155C New 1W** 95C 100 30m, 82m~100m 0~+250 10m~11m 0.5W 70C 125C 75 12m~27m UR73VD 2B 0~+250 10m, 11m New 1W** 95C 12m~27m 75 * Rated voltage = Power Rating X Resistance Value ** Please keep the resistor operating according to the derating curve of the terminal part temperature based on the specified power rating. If any questions should arise whether to use the Rated Ambient Temperature or the Rated Terminal Part Temperature, please give priority to the Rated Terminal Part Temperature. Prior to use and for more details refer to Introduction of the derating curves on the terminal part temperature in the beginning of the catalog. environmental applications Temperature Rise One-Pulse Limiting Electric Power UR73V/UR73VD 2A-2B UR73VD 2A-2B UR73V 2A-2B 1000 70 90 2B 80 2A 60 2A 2B 750 70 2B 2A 50 2A 60 2B 40 50 500 40 30 30 20 2B 20 2A 250 10 10 1 0 0 10 20 30540060 70 80 90 100 10 20 30540060 70 80 90 100 .001 .01 .1 1 10 100 1000 Power Rating Power Rating Pulse Duration (ms) (%) (%) UR73V UR73VD Regarding the temperature rise, the value of the The maximum applicable voltage is equal Measurement condition Measurement condition temperature varies per conditions and board for Room temperature: 25C to the max. overload voltage. Please Room temperature: 25C PCB: FR-4t = 1.6mm PCB: FR-4t = 1.6mm use since the temperature is measured under our contact factory for resistance characteristics Cu foil thickness: 35m Cu foil thickness: 35m measuring conditions. of continuous applied pulse. Hot spot Hot spot Terminal Terminal Performance Characteristics Requirement R (%+0.005) Parameter Limit Typical Test Method Within specified Resistance 25C tolerance Within specified T.C.R. +25C/-55C and +25C/+125C T.C.R. Overload (Short time) 2% 0.5% Rated voltage x 2.5 for 5 seconds Resistance to Solder Heat 1% 0.3% 260C 5C, 10 1 second Rapid Change of Temperature 1% 0.5% -55C (30 minutes), +125C (30 minutes), 100 cycles Moisture Resistance 2% 1% 40C 2C, 90%~95%RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Endurance at 70C 2% 1% 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle High Temperature Exposure 1% 0.3% +155C, 1000 hours Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/17/19 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com 125 Temperature Rise (C) Temperature Rise (C) One-Pulse Limiting Electric Power (W) current sense