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| OARS XP Open Air Sense Resistors Metal Alloy Strip OARS-XP Series * * * * * * * Zero ohm jumper available Resistance values 1m to 25m 1% or 5% tolerance Open air design provides cooler operation Lead Free RoHS compliant construction available Extended power surface mount current sense resistor Unique form factor provides TCE compliant termination Electrical Data Resistance Value () 0.001 0.002 0.005 0.010 0.020 0.025 Available Tolerances (%) 1, 5 1, 5 1, 5 1, 5 1, 5 1, 5 Absolute TCR (ppm/C) 240 40 40 40 40 40 Rated Power (W) 5 5 5 5 5 5 Features: * Superior thermal expansion cycling * Inductance less than 10 nanohenries * Flameproof * Lead flexible for thermal expansion Applications: * Current sensing * Feedback * Low inductance * Surge and pulse * AC applications (please contact factory) Electrical Data Test Spec: AEC Q200 TCR +125 to -55C Thermal Shock High Temperature Exposure 125C Temperature Cycling: -40 to +125C Operational Life Biased Humidity Mechanical Shock Vibration Moisture Resistance Terminal Strength Solvent Resistance 1m 240ppm <0.75% <1.75% <1.0% <2.0% <0.75% <1.5% <1.0% <1.0 2m - 7m 40ppm <0.75% <0.5% <1.0% <1.0% <0.5% <1.0% <1.0% <2.5% Meets JIS-C-6429 Meets MIL-STD-202 Method 215 Meets J-STD-002 Method B >7m 40ppm <0.75% <1.0% <0.75% <1.0% <0.5% <1.0% <1.0% <2.0 Solderability General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC's own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc OARS-XP Issue May 2009 Sheet 1 of 3 Wire and Film Technologies Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com OARS XP Open Air Sense Resistors Metal Alloy Strip Physical Data L W H D T Dimensions (Inches and (mm)) IRC Type OARS-XP L (Resistance Dependant) 0.425 - 0.470 (10.7 - 12.0) H (Resistance Dependant) 0.090 - 0.180 (2.28 - 4.57) T 0.093 0.010 (2.36 4.57) D 0.190 0.030 (4.83 0.76) W 0.250 0.015 (6.35 0.38) Power Derating Curve 6.0 Note: 5.0 Power Rating (watts) 4.0 3.0 2.0 0.0 25 The power derating curve is a guidance based on a conservative design model. The OARS XP is a solid metal alloy construction that can withstand significantly greater operating temperatures than conservative design models permit. The resistive alloys can withstand temperatures in exess of 350C. Therefore, the system thermal design is a more significant design parameter due to the heat limitations of solder joints and/or circuit board substrate materials. Refer to additional information below. 60 95 130 165 195 225 Ambient Temperature (C) The thermal image (not a simulation) to the left is of an OARS XP 2.5 m running at 5 Watts. Notice the hotpsot is nearly 205C, but the solder joint is approximately 115C (FR4 is rated for 130C). The unique construction of the OARS XP isolates the hotspot from the circuit board material preventing damage. Additionally, the thermal energy is dissipated to the air instead of being conducted into the circuit board potentially causing a nearby power component to exceed its rating. The standard test circuit board consists of a four layer FR4 material with 2 ounce outer layers and 1 ounce inner layers, which is typical of many industry designs. Contact IRC for more details or for other thermal image test data for specific resistance values and power levels. OARS XP R0025 Thermal Image @ 5 Watts Ambient conditions, No forced air. Wire and Film Technologies Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com OARS-XP Issue May 2009 Sheet 2 of 3 OARS XP Open Air Sense Resistors Metal Alloy Strip Pulse/Surge Chart Note: 120 Joules (watts-second) 100 80 60 40 20 0 0 5 10 15 20 25 30 The high pulse surge capability of the OARS parts is attributed to the solid metal alloy construction. In many applications the cross-section of the OARS is greater than the cross-section of the board traces connecting the parts to the circuit board. Cross-Sectional area ranges from approximately 1375 mils to 7250 mils. Resistance (milli ohms) Recommended Pad Layout OARS XP PAD (2 TERMINAL) 0.377 (9.58) 0.125 (3.18) 0.125 (3.18) 0.145 (3.67) OARS XP PAD (4 TERMINAL) 0.418 (10.57) 0.020 (0.51) 0.020 (0.51) 0.145 (3.67) 0.113 (2.79) 0.280 (7.11) 0.280 (7.11) 0.280 (7.11) 0.060 (1.52) 0.127 (3.23) 0.125 (3.16) 0.242 (6.15) 0.242 (6.15) 0.020 (0.51) 0.060 (1.52) 0.280 (7.11) 0.110 (2.79) 0.125 (3.16) NOTE: "RECOMMENDED VOLTAGE SENSE PADS FOR KFT VIN CONNECTION" 0.127 (3.23) 0.011 (15.52) 0.242 (6.15) 0.011 (15.52) 0.242 (6.15) Ordering Data Sample Part No. IRC Type OARS OARS - XP R005 J LF Size Resistance Range (ohms) Tolerance (F = 1%, J = 5%) RoHS Indicator Wire and Film Technologies Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com OARS-XP Issue May 2009 Sheet 3 of 3 |
Price & Availability of OARS-XPR005FLF
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