Surface Mount Sense Resistors OARS SERIES ● Flexible leads for thermal expansion ● Resistance wire TCR ±20 ppm/°C ● Tolerance down to 1% ● 50V continuous pulse rating/rated voltage ● Values down to 3mΩ Electrical Data OARS-1 Power rating Resistance range watts ohms 1 @ 85°C 2 @ 25°C .003, .004, .005, .010, .015, .020, .025, .030, .040, .050 *Contact factory for values outside these specifications Physical Data Dimensions (mm) Type L OARS-1 11.18±0.381 H 3.05±0.762 T 2.36±0.254 L D 4.83±0.762 W 3.175max Recommended pad dimensions (mm) W 3.07 9.37 3.23 3.07 3.2 H T D Performance Data Operating Characteristics Load life: 1000 hrs at 70°C Moisture no load 1000 hrs Temperature Cycle 1000 cyc at -40°C and +125°C FEATURES ● Superior thermal expansion cycling ● Inductance less than 10 nanohenries ● Flameproof ● Solderable pads (60/40 solder plated) ● Lead flexible for thermal expansion ● Low termination stress (‘J’ leads) ∆R% ∆R% ∆R% Maximum 1 1 1 APPLICATIONS ● Current sensing ● Feedback ● Low inductance ● Surge and pulse ● AC applications General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print. © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, England Tel: 01670 822181 Fax: 01670 829465 Web: http://www.Welwyn-TT.co.uk Issue A 07/99 51 Surface Mount Sense Resistors OARS SERIES Packaging Data Dimensions (mm) Size A OARS 4.32±0.08 B 11.7±0.08 C 24.0±0.30 D 11.5±0.10 E 1.75±0.10 F 8.0±0.10 G 4.0±0.1 G E C D B F OARS Pulse Handling A Packaging Resistors are supplied taped and reeled. 1,000 pcs per reel. © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, England Tel: 01670 822181 Fax: 01670 829465 Web: http://www.Welwyn-TT.co.uk 52 Issue A 07/99