resistors UR73 current sensing chip resistor EU features • • • • • Very low resistance, high precision reliability Utilization of thick film Low T.C.R. achieved (±100 ppm/°C) Marking: Indigo body color with white marking Products with lead-free terminations meet EU RoHS requirements. EU RoHS regulation is not intended for Pb-glass contained in electrode, resistor element and glass. dimensions and construction L a UR73 a W Ni Plating h b Protective Coating Resistive Inner Film Electrode Dimensions inches (mm) W h a Size Code Resistance Range (Ω) D1E 24m ~ 100m D1J .022±.004 +.005 10m ~ 27m .063±.008 .031 -.004 .02±.004 .014±.004 (0.55±0.1) +0.15 30m ~ 100m (1.6±0.2) (0.8 (0.5±0.1) (0.35±0.1) .014±.004 -0.1 ) (0.35±0.1) D2A 10m ~ 16m .079±.008 .049±.008 .022±.004 .016±.008 18m ~ 30m (2.0±0.2) (1.25±0.2) (0.55±0.1) (0.4±0.2) 2A 33m ~ 100m .079±.008 .049±.008 .02±.004 .016±.008 L b +.004 .039 +.004 -.002 .020 -.002 +0.1 ) (1.0 -0.05 .016±.002 .010±.004 .012±.004 +0.1 ) (0.4±0.05) (0.25±0.1) (0.3±0.1) (0.5 -0.05 Ceramic Substrate a UR73D L D2B W Solder Plating h 2B Ni Plating b Resistive Film Ceramic Protective Substrate Coating Inner Electrode ordering information New Part # UR73 Type UR73 UR73D (2.0±0.2) (1.25±0.2) (0.55±0.1) (0.4±0.2) a 2A T Power Rating 1E: 0.125W 1J: 0.2W 2A: 0.25W 2B: 0.5W 2H: 0.75W 3A: 1W Termination Material T: Sn .024±.008 (0.6±0.2) .02±.008 (0.5±0.2) .012 +.008 -.004 (0.3 +0.2 -0.1 ) .039±.008 10m ~ 16m .126±.008 .063±.008 .024±.004 .020±.008 (1.0±0.2) 18m ~ 27m (3.2±0.2) (1.6±0.2) (0.6±0.1) (0.5±0.2) .031±.008 (0.8±0.2) 30m ~ 100m .126±.008 .063±.008 .024±.004 .020±.012 (3.2±0.2) (1.6±0.2) (0.6±0.1) (0.5±0.3) .016 +.008 -.004 (0.4 +0.2 -0.1 ) D2H .063±.012 10m ~ 30m .197±.008 .098±.008 .026±.004 .026±.012 (1.6±0.3) 33m ~ 100m (5.0±0.2) (2.5±0.2) (0.65±0.1) (0.65±0.3) .026±.012 (0.65±0.3) D3A .079±.012 10m ~ 30m .248±.008 .122±.008 .024±.004 .031±.012 (2.0±0.3) 33m ~ 100m (6.3±0.2) (3.1±0.2) (0.6±0.1) (0.8±0.3) .031±.012 (0.8±0.3) TD Packaging TP: 2mm pitch punch paper (1E) TD: 7" punched paper tape (1J, 2A, 2B) TE: 7" embossed plastic (2H, 3A) R100 Nominal Resistance All values less than 0.1Ω (100mΩ) are expressed in mΩ with “L” as decimal. Ex: 20mΩ = 20L0 F Tolerance F: ±1% 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. 38 1/10/11 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com current sensing chip resistor applications and ratings Part Designation Power* Rating UR73D1E 1/8W (.125W) UR73D1J 1/5W (.2W) UR73D2A 1/4W (.25W) UR732A 1/4W (.25W) UR73D2B 1/2W (.5W) UR732B 1/2W (.5W) UR73D2H 3/4W (.75W) UR73D3A 1W (1W) T.C.R. (ppm/°C) Max. Resistance Range ±100 30mΩ - 100mΩ ±500 24mΩ - 27mΩ ±100 47mΩ - 100mΩ F (±1%) E-24, 25mΩ, 50mΩ ±200 30mΩ - 43mΩ ±300 10mΩ - 27mΩ ±250 10mΩ - 30mΩ ±100 47mΩ - 100mΩ ±250 33mΩ - 43mΩ ±200 10mΩ - 27mΩ ±100 47mΩ - 100mΩ ±200 30mΩ - 43mΩ ±250 10mΩ - 30mΩ ±100 33mΩ - 100mΩ ±250 10mΩ - 30mΩ ±100 33mΩ - 100mΩ Absolute Maximum Working Voltage Maximum Overload Voltage (5 sec. max.) √P•R √P•R x 2.5 Operating Temperature Range -55°C to +125°C * Power rating is guaranteed by the Temperature Rise data shown below environmental applications Derating Curve Surface Temperature Rise UR73 2A, 2B 33mΩ 100 UR73D 1J, 2A, 2B, 2H, 3A 10mΩ UR73D 1E 24mΩ 100 100 3A (1) 60 40 20 0 -60 -40 -55 -20 0 20 40 60 80 70 Ambient Temperature (°C) 100 120 140 125 Temperature Rise (°C) Temperature Rise (°C) % Rated Power 80 75 2B (1) 2B (2) 2A (1) 50 2A (2) 25 0 0 25 75 50 2H (1) 75 2B (2) 50 2A (1) 1J (1) 1E (1) 2A (2) 1J (2) 1E (2) 25 0 100 3A (2) 2H (2) 2B (1) 0 For resistors operated at an ambient temperature of 70°C or above, a power rating shall be derated in accordance with the above derating curve. 25 75 50 100 % Power Rating % Rated Power 1 1 2 2 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. Performance Characteristics Parameter Resistance T.C.R. Overload (Short time) Requirement ∆ R ±(%+0.005Ω) Limit Typical Within specified — tolerance Within specified — T.C.R. ±2% ±0.5% Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70°C ±1% ±1% ±2% ±0.3% ±0.5% ±1% ±2% ±1% High Temperature Exposure ±1% ±0.3% Test Method 25°C +25°C/+55°C and +25°C/+125°C Rated power x 2.5 for 5 seconds 260°C ± 5°C, 10 ± 1 second -55°C (30 minutes), +125°C (30 minutes), 100 cycles 40°C ± 2°C, 90%~95%RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle +125°C, 1000 hours Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/17/12 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 39 resistors UR73