8W CURRENT DETECT CHIP RESISTORS Features…………………………………………………………. Non inductive design. Low TCR, typically less than 30ppm/°C. Low profile surface mount package. Excellent pulse/surge performance. 8W power rating. Applications……………………………………………………… Current sense applications Over current protection in Battery chargers. Servo motor control circuits. DC-DC, DC-AC and intelligent power modules. Industrial PC modules (IPM) and precision measurement systems. Current detection circuits in high-speed CPU peripherals. Specification Type A B C D BCS8 (mm) 12.8+/-0.5 6.4max 2.5max 1.3 B Dimensions (mm) Marking Marking is done by 3 digits resistance value notation and tolerance code F (1%). R001F D A C D Specification Resistance values TCR Tolerance Power Rating BCS8 0.5m, 1m, 2m, 3m, 4m, 5m , 10mΩ +/-50ppm/°C +/-1.0% (F), +/-5.0% (J) 8W Current Rating Maximum Current Series Inductance Operating Temp. Storage Temp. 90A 126A 5nH -55 C to 175 °C -55 C to 175 ° C Short Time Overload Low Temperature Storage High Temperature Storage Heat Shock Vibration Soldering Heat Solderability Humidity Load Life Specifications subject to change without notice. 1 Specifications ∆R+/-(0.5%+0.5mΩ) ∆R +/-(0.5%+0.5mΩ) ∆R +/-(1.0%+0.5mΩ) ∆R +/-(0.5%+0.5mΩ) ∆R +/-(0.5%+0.5mΩ) ∆R +/-(0.25%+0.5mΩ) 90%/terminal surface ∆R +/-(0.5%+0.1mΩ) ∆R +/-(0.5%+0.1mΩ) Remarks Measured +/- 30ppm/ °C Attached to70 micron PCB At 1m Ω 2.5 seconds one time Conditions maximum current, 2.5seconds. -55C, 24hours +175C, 1000hours -55C to +125C, 20min. interval, 5min. 5cycles 10-2000Hz, 1.5mm/20gr, 2hours 260°C+/-5°C, 10+/-1 seconds. 85°C, 85%RH, dc0.1W, 1000 hours 25°C, dc rated power, 90min ON, 30min OFF, 1000hours BCS 8 8W 5025 CURRENT DETECT RESISTOR Temperature Rise Frequency Characteristics Impedance(Ω) Temperature (°C) at hot spot. 250 0.050 200 0.010 150 0.005 100 BCS 8 R001 F 50 0 0.001 10k 100k 1M Frequency(Hz) 0 10M 2 4 6 8 Applied Power (W) 10 12 Dotted line: typical measurement TCR Curves ∆R/R (ppm) Recommended Foot Print (mm) +4000 7.4 Slope of +30ppm/°C +2000 0 -2000 Slope of –30ppm/°C 2.5 2.5 -4000 // -50 9.0 0 25 50 75 Resistor Temperature (°C) 100 125 Soldering Recommendation Due to the enhanced heat dissipation properties of the BCS8, the temperature profile during reflow soldering will need to be increased by: 10 to 20°C. Custom designs Alternative widths and lengths are available, please contact factory for details. FR4 Thermal PCB Characterisation X MM Pad Dimensions (x,y mm) 60, 45 50, 45 40, 40 30, 30 20, 20 10, 10 P90 °C, 70um (W) 5.8 5.4 4.2 3.5 2.9 2.4 P90 °C, 35um (W) 4.6 4.3 4.1 2.8 2.7 2.5 Y M M BCS 8 Notes: Characterisation carried out using 70µm and 35µm PCB copper pad weights, with the temperature of 90°C used as a maximum reference on the PCB. 2 BCS 8 8W 5025 CURRENT DETECT RESISTOR 1.75 Taping specification (BCS8) 11.50. 24.0+/-0.3 13.30 1.50 0.30+/-0.05 2.00 D Dia. 1.50+0.1-0 Dia.1.50+0.1-0 4.80 4.00 t A X C D B P/N BCS8 R001F BCS8 R002F BCS8 R003F BCS8 R003F BCS8 R004F BCS8 R005F A/NA A A A A NA A A 12.8 12.8 12.8 12.8 12.8 12.8 B 4.0 4.0 2.7 4.5 5.3 4.4 C 1.14 0.64 0.64 0.44 0.34 0.34 D 1.4 1.4 1.4 1.4 1.4 1.4 X 10.0 10.0 10.0 10.0 10.0 10.0 t 1.0 0.5 0.5 0.3 0.2 0.2 Note : Above dimensions are approximate. Resistance testing the BCS resistors is done at the side positions of resistor terminals (see figure) using a 4 - port measuring system. For a stated resistance tolerance of +/-1.0%, the measured values should be within the +/-0.8% factory tested values. When surface mount resistor is attached on circuit board, small resistance changes will occur, Custom designs are available, please call the factory. Resistor Contact Probe Current Voltage Ohm Meter Ordering Information BCS 8 R001 F Model Power Rating 8 : 8W Resistance Code R001: 0.001Ω 3 Tolerance J = 5% Tol F = 1% Tol