OAR3-R025JI TT Electronics

OAR D.qxd 8/9/04 4:15 PM Page 1 OAR D.qxd 8/9/04 4:15 PM Page 1 Open Air Open Air Open Air Welwyn Components Sense Resistors Sense Resistors Welwyn Components Sense Resistors OAR Series OAR Series OAR Series 1, 3 and 5 watts 1, 3 and 5 watts 1, 3 and 5 watts 1% or 5% tolerance1% or 5% tolerance Resistance wire TCR 20 ppm/C 1% or 5% tolerance Resistance wire TCR 20 ppm/C Resistance values down to 0R005 ohms Resistance wire TCR 20 ppm/C Resistance values down to 0R005 ohms Resistance values down to 0R005 ohms Electrical Data Electrical Data OAR-1 OAR-3 OAR-5 Power rating at 85C watts 1 3 5 OAR-1 OAR-3 OAR-5 Resistance range ohms 0R005* to 0.10 0R005 to 0.10 0R005 to 0.05 Power rating at 85C watts 1 3 5 * Contact factory for values below 0R005 ohms Resistance range ohms 0R005* to 0.10 0R005 to 0.10 0R005 to 0.05 * Contact factory for values below 0R005 ohms Physical Data Physical Data Dimensions (mm) Type A B C E F Dimensions (mm) OAR-1 11.43 +1.020/-0.508 5.08 2.54 3.18 0.762 1.65 +0.254/-0.127 1.02 0.051 Type A B C E F OAR-3 15.24 +1.020/-0.50 25.4 max. 3.18 0.762 1.65 +0.254/0.127 1.02 0.051 OAR-1 11.43 +1.020/-0.508 5.08 2.54 3.18 0.762 1.65 +0.254/-0.127 1.02 0.051 OAR-5 20.32 +1.020/-0.50 25.4 max. 3.18 0.762 1.65 +0.254/-0.127 1.02 0.051 OAR-3 15.24 +1.020/-0.50 25.4 max. 3.18 0.762 1.65 +0.254/0.127 1.02 0.051 OAR-5 20.32 +1.020/-0.50 25.4 max. 3.18 0.762 1.65 +0.254/-0.127 1.02 0.051 On lower ranges stand-off may be eliminated On lower ranges stand-off may be eliminated B NOTE: Contact factory for: B NOTE: 1.Variations of A dimension C Contact factory for: 2.Different lead diameter 1.Variations of A dimension C 2.Different lead diameter A F Test Point (Kelvin connection) A F Test Point (Kelvin connection) E E General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. General Note General All Noteinformation is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of TT electronics reserves the right to make changes in product specification without notice or liability. Welwyn Components reserves the right to make changes in product specification without notice or liability. TT electronics plc All information Welwyn is subject Components to Welwyns own Limiteddata and is Bedlington, considered Northumberland accurate at time NE22 of going 7AA, to UKprint. A subsidiary of All information is subject to TT electronics own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com TT electronics Issue plcD 08.04 Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK TT electronics plc Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue D 08.04 101 11. 11 101OAR D.qxd 8/9/04 4:15 PM Page 2 Open Air Open Air Sense Resistors Sense Resistors OAR Series Welwyn Components OAR Series Height Standards All Resistances are in ohms. All Tolerances are 2.54. Dimensions (mm) OAR-1 Resistance 0.005 - 0.100 Height 5.080 OAR-3 Resistance 0.005 0.010 0.015 0.020 0.025 0.030 0.040 0.050 0.070 0.080 0.10 Height 16.002 16.510 16.510 17.018 22.098 22.860 16.002 18.288 22.860 21.590 22.860 OAR-5 Resistance 0.005 0.010 0.015 0.020 0.025 Height 15.240 19.304 19.304 22.860 22.860 Performance Data Maximum change Load life: 1000 hrs at 25C R% 1 Moisture No Load 100 hrs R% 1 Temperature Cycle at -40C & +125C (1000 cyc): R% 1 Features Welded Construction Flameproof Inductance less than 10 nanohenries Solderable copper leads Applications Current Sensing Feedback Low inductance Surge and pulse Ordering Procedure Example: OAR3 at 10 milliohms and 5% tolerance in bulk pack - O A R 3 R 0 1 J I Type Value (use IEC62 code) Tolerance (use IEC62 code) F 1% J 5% Packing I Bulk Standard General Note TT electronics reserves the right to make changes in product specification without notice or liability. Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK All information is subject to TT electronics own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue D 08.04 TT electronics plc 102 11. 11