LT73V linear positive temperature coefficient flat chip resistors (for automotive) EU thermal protection features •SMD thin film resistors with thermo-perceptivity •Various TCRs +150 - +4500×10−6/K are available •Operating temperature range -155°C Rated ambient temperature: 85°C •The evaluation based on AEC-Q200 has been examined •Coating color: orange •Products meet EU RoHS requirements dimensions and construction L c W 2A (0805) Dimensions inches (mm) L W c d t −.004 .079±.008 .049±.008 .016±.008 .012 +.008 .020±.004 (2.0±0.2) (1.25±0.2) (0.4±0.2) (0.3 +0.2 (0.5±0.1) −0.1 ) 2B (1206) .126±.008 .063±.008 .020±.012 (3.2±0.2) (1.6±0.2) (0.5±0.3) Type c Ceramic Substrate Solder Plating −.004 .016 +.008 .024±.004 (0.4 +0.2 (0.6±0.1) −0.1 ) Ni Plating t d Protective Resistive Coating Film Inner Electrode ordering information LT73V 2B T TD 102 J 0900 Type Power Rating Termination Material Taping Nominal Resistance Resistance Tolerance T.C.R. (×10−6/K) 2A:0.1W 2B:0.125W T:Sn 3 digits G:±2% J :±5% 4 digits TD:4mm pitch paper TE:4mm pitch plastic embossed applications and ratings Type Power Rating Max. Working Voltage Max. Overload Voltage Thermal Time Constant* Thermal Dissipation Constant* 2A 2B 0.1W 0.125W 50V 75V 100V 150V 1.0s 1.5s 1.37mW/°C 1.47mW/°C Rated Ambient Temperature +85°C Operating Temperature Range −55°C - +155°C Taping & Q’ty/Reel (pcs) TD TE 5,000 5,000 4,000 4,000 * Thermal time constant and dissipation constant are reference values, which are values of elements and vary with connecting or fixing methods. T.C.R.. (×10−6/K) 150, 250, 350, 450, 500 600, 700, 800, 900 1000, 1200, 1400 1600, 1800 2000, 2200, 2400 2600, 2800, 3000 3300, 3600, 3900 4200 4500 T.C.R. Tolerance ±100×10−6/K ±150×10−6/K ±15% ±10% (Ω) Resistance Range (E24) 2A 2k - 15k 1k - 8.2k 1k - 6.8k 510 - 4.7k 510 - 4.7k 2B 2k - 22k 1k - 15k 1k - 8.2k 1k - 6.8k 510 - 6.8k 510 - 3k 510 - 6.2k 100 - 1k 51 - 510 100 - 2k 51 - 510 Resistance Tolerance G: ±2% J: ±5% T.C.R. Measuring Temperature: +25°C - +75°C Rated voltage = √Power Rating×Resistance value or Max. working voltage, whichever is lower. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 186 12/19/12 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com LT73V linear positive temperature coefficient flat chip resistors (for automotive) Derating Curve Temperature Characteristics of Resistance % Resistance changing rate % Percent rated power 100 80 60 40 20 0 -60 -40 -55 -20 0 20 40 60 80 100 120 85 Ambient temperature (°C) 140 160 155 70 60 50 40 30 20 10 0 −10 −20 −30 −40 −75 T.C.R. (×10−6/K) 4500 3300 2400 1600 −50 −25 0 25 50 75 100 125 150 Ambient temperature (°C) For resistors operated at an ambient temperature of 85°C or above, a power rating shall be derated in accordance with the above derating curve. Approximate Expression for Resistance- Temperature Characteristics Values are not guaranteed but typical. RT=R25 (C0+C1T+C2T2)RT: T°CRT: Resistance value at T°C R25: 25°C R25: Resistance value at 25°C T: (°C) T: Ambient temperature (°C) C0, C1, C2: C0, C1, C2: Constants T.C.R. (×10−6/K) C0 C1 C2 3000 3300 3600 3900 4200 4500 0.9288 0.9232 0.9175 0.9099 0.9026 0.8948 0.0028 0.0030 0.0032 0.0035 0.0038 0.0041 1.9983×10−6 2.9980×10−6 4.0000×10−6 4.0064×10−6 3.9964×10−6 4.0064×10−6 Performance Characteristics T.C.R. Performance Requirements ∆R±(%+0.05Ω) Limit Typical Within specified − tolerance Within specified T.C.R. − Overload (Short Time) 1% 0.02% 1% 0.10% 2% : TCR≤+3300 5% : TCR≥+3600 0.53% 2.59% Parameters Resistance Resistance to Soldering Heat Rapid Change of Temperature Moisture Resistance Endurance at 85°C High Temperature Load Life High temperature Exposure Low Temperature Exposure 3% 0.15% 2% : TCR≤+3300 5% : TCR≥+3600 2% : TCR≤+3300 5% : TCR≥+3600 2% : TCR≤+3300 5% : TCR≥+3600 0.30% 0.76% 0.40% 2.17% 0.81% 3.20% 2% −0.10% Test Methods 25°C +25°C/+75°C Rated voltage × 2.5 or Max. overload Vol., whichever is lower, for 5 seconds 260°C ± 5°C, 10 seconds ± 1 second −55°C (30min.)/+155°C (30min.), 1000 cycles 85°C ± 2°C, 85% ± 5% RH, 1/10 rated power, 1.5h ON/0.5h OFF cycle. 1000 hours 85°C ± 2°C, 1000 hours 1.5h ON/0.5h OFF cycle. 125°C, Rated voltage, 1000 hours 155°C, 1000h −55°C, 1000h Please pay attention not to be applied ESD, it may cause of resistance change. Actual Value (Out of guarantee) Test Items Reference Test Methods ESD 500V Human model, 100pF, 1.5kΩ Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/19/12 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 187 thermal protection environmental applications