Current Sensing Resistors FEATURES HOW TO ORDER LR2512 - 3 Perfection solution of high precision current sensing, R005 J voltage division and pulse applications including switching M Packaging M = Tape/Reel (4K/Reel, embossed tape) T = Tape/Reel (2K/Reel, embossed tape) O = Tape/Reel (1K/Reel, embossed tape) and linear power supplies, instruments, power amplifiers. Extremely low values start from 0.25mΩ High temperature performance (up to +275°C. Excellent frequency response. All welded construction. Excellent low TCR. and Stable Tolerance (%) F = +1 G = +2* J = +5 D = +0.5 Excellent stability (|∆R/R| ≤ ± 0.5% for 1000h at 100°C) different environmental conditions. EIA Resistance Value R005 = 0.005Ω (5mΩ) R002 = 0.002Ω (2mΩ) R010 = 0.001Ω (10mΩ) APPLICATIONS Power Supply, PC, Power Pack, Battery Pack DIY Tools Power Rating of Watt Inverter/Converter (AC/DC, DC/DC, DC/AC Measurable Instrument, Consumer Electronics Note Book, LED Driver Series Size LR2512, LR2010, LR1206, LR2725, LR2728 Sn Termination DERATING CURVE The Category Temperature Range: -65°C~+275°C For resistors operated in ambient temperature above 100°C, power rating bust be derated in accordance with the curve below: Rated Power (%) 120 100 80 60 40 20 0 -65 -50 -25 0 25 50 75 100 125 150 175 200 225 250 275 Temperature (°C) SPECIFICATIONS Type Maximum Rating Power Maximum Rating Current Maximum Overload Current mΩ/TCR (ppm/°C) LR1206 0.5W 22.36A 44.72A 1.0~4.0m: +50 4.1~15.0m: -25 15.1~50.0m: -15 American Accurate Components, Resistance Range (mΩ)** F ( ±1%); D (±0.5%) G (±2%); J (±5%) 7.0~50.0 1.0~50.0 188 Technology Drive, Unit H Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889 Email: [email protected] Operating Temperature -65~+275°C 1 Current Sensing Resistors LR2010 LR2512 LR2725 LR2728 a. b. 1W 31.62A 63.25A 1W 31.62A 63.25A 1W 44.72A 100.00A 1.5W 54.77A 122.48A 2W 63.25A 141.42A 3W 77.46A 134.16A 4W 126.49A 252.95A 3W 27.39A 47.43A 3.5W 29.58A 51.23A 4W 31.62A 63.25A 1.0~4.0m: +50 4.1~15.0m: -25 15.1~50.0m: -15 1.0~3.0m: +50 3.1~6.9m: -25 7.0~100m: -15 0.5~3.0m: +50 3.1~6.9m: -25 7.0~100m: -15 0.5~3.0m: +50 3.1~6.9m: -25 7.0~75m: -15 0.5~2.0m: +50 2.1~10.0m: -25 0.25~0.9m: +50 1.0~3.0m: -25 4.0~7.0m: -25 7.1~100m: -15 4.0~7.0m: -25 7.1~100m: -15 4.0~7.0m: -25 7.1~50m: -15 7.0~50.0 1.0~50.0 3.0~100 1.0~100 7.0~100 0.5~100 7.0~75.0 0.5~75.0 7.0~10.0 0.5~10.0 -- 0.25~3.0 4.0~100 4.0~100 4.0~100 4.0~100 4.0~50.0 4.0~50.0 The Maximum Power Rating is operated at 100°C “**” customize available for tolerance and range of resistance. RELIABILITY PERFORMANCE Test Item Short Time Overload Dielectric Withstanding Voltage American Accurate Components, Condition of Test Test Method Test Limits The number of rated power are as follow: • LR1206-0.5W: 4 times rated power • LR1206-1W: 4 times rated power • LR2010-1W: 4 times rated power • LR2512-1W 5 times rated power • LR2512-1.5W: 5 times rated power • LR2512-2W: 5 times rated power • LR2512-3W: 3 times rated power • LR2725-4W: 4 times rated power • LR2728-3W: 3 times rated power • LR2728-3.5W: 3 times rated power • LR2728-4W: 4 times rated power Rating power duration: 5 secs JIS C 5201-1 4.13 ±(0.5%+0.0005Ω)∆R Applied 500VAC for 1 minute & limit surge current 50mA (max.) JIS C 5201-1 4.7 Without break down 188 Technology Drive, Unit H Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889 Email: [email protected] 2 Current Sensing Resistors DIMENSIONS Wraparound Termination Type Maximum Power Rating (Watts) Resistance Range (mΩ) LR1206 0.5 & 1.0 1.0~50.00 LR2010 1.0 1.0~3.0 3.1~100.0 Dimensions – in inches (millimeters) L W H T 0.120±0.010 (3.048±0.254) 0.062±0.010 (1.575±0.254) 0.200±0.010 (5.080±0.254) 0.100±0.010 (2.540±0.254) 0.245±0.010 (6.248±0.254) 0.130±0.010 (3.302±0.254) 0.0254±0.010 (0.645±0.254) 0.031±0.010 (0.787±0.254) 0.0254±0.010 (0.645±0.254) 0.031±0.010 (0.787±0.254) 0.0254±0.010 (0.645±0.254) 0.0254±0.010 (0.645±0.254) 0.031±0.010 (0.787±0.254) 0.0254±0.010 (0.645±0.254) 0.020±0.010 (0.508±0.254) 0.051±0.010 (1.295±0.254) 0.031±0.010 (0.787±0.254) 0.074±0.010 (1.880±0.254) 0.044±0.010 (1.118±0.254) 0.034±0.010 (0.868±0.254) 0.074±0.010 (1.880±0.254) 0.044±0.010 (1.118±0.254) 0.074±0.010 (1.880±0.254) 0.044±0.010 (1.118±0.254) 0.066±0.010 (1.676±0.254) 0.5~4.0 LR2512 1.0 & 1.5 4.1~75.0 75.1~100.0 0.5~4.0 LR2512 2.0 4.1~75.0 0.5 LR2512 3.0 0.6~2.9 4.1~10.0 0.031±0.010 (0.787±0.254) 3.0~4.0 0.25, 0.50 1.0 1.5 LR2725 4.0 2.0 0.268±0.010 (6.807±0.254) 0.254±0.010 (6.452±0.254) 0.039±0.010 (0.991±0.254) 0.043±0.010 (1.092±0.254) 0.039±0.010 (0.991±0.254) 0.035±0.010 (0.889±0.254) 2.5 3.0 LR2728 3.0 - 3.5 & 4.0 American Accurate Components, 4.0~100.0 0.264±0.010 (6.706±0.254) 0.283±0.010 (7.1880.254) 0.039±0.010 (0.991±0.254) 188 Technology Drive, Unit H Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889 Email: [email protected] 0.085±0.010 (2.159±0.254) 0.071±0.010 (1.803±0.254) 0.065±0.010 (1.651±0.254) 0.045±0.010 (1.295±0.254) 0.045±0.010 (1.143±0.254) 3 Current Sensing Resistors RATING CURRENT The following equation may be used to determine the Direct Current and Alternating Currents (RMS, root mean square value) of normal rater power. However, if the result value exceeds the highest current of regulated standards, the highest normal rated (see specifications) power is to be used. I = √(P/R) Remark: I: Rating Current P: Rating Power R: Resistance The content of this specification may change without notification 5/15/2015 American Accurate Components, 188 Technology Drive, Unit H Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889 Email: [email protected] 4