Meggitt CGS Low Ohmic Resistor SMD for current sense - thick film Key features up to 1 watt at 70°C values down to R10 supplied on tape ideal for current sensing value marked packaged on 7" reels SMD Resistors custom designs available attractive pricing Specification Type Power Rating Maximum Working Voltage RL73_2A 0.125W 1.11V RL73_2B 0.25W 1.58V RL73_2E 0.5W 2.23V RL73_2H 0.75W 2.73V RL73_3A 1.0W 3.16V Electrical Operating Resistance Range ( ohms ) F (± 1%) G (± 2%)J(± 5%) Temperature Range E-96, E-24 E-24 R20 ~ 10R ----R10 ~ 10R R20 ~ 10R ----R10 ~ 10R R20 ~ 10R ---55°C to +125°C --R10 ~ 10R R20 ~ 10R ----R10 ~ 10R R20 ~ 10R ----R10 ~ 10R Rated AmbientTemperature +70°C Temperature Coeffificent of Resistance type RL73 series The RL73 series has a special metal glaze resistive element and a barrier layer beneath the solder to extend terminal life. This product satisfies the demand for a low ohmic shunt resistor to act as a current sensor. We can offer sizes and tighter tolerances as "specials" where demand justifies. A ±1% is offered between the resistance values 200 milli ohms and 10 ohms. Resistors with 1% tolerance will have a TCR of 100ppm/°C Resistors with 2% or 5% tolerance will have a TCR of 200ppm/°C Recommended Circuit Board Design If this device is anticipated to run at full continuous power then action to improve the cooling should be taken. This can be a metal substrate, copper pad left under the chip or an opening in the PCB. Dimensions Type Dimensions (mm) L ± 0.2 W ± 0.2 C ± 0.3 D ± 0.1 RL73 2A 2.0 1.25 0.4 0.5 RL73 2B 3.2 1.6 0.5 0.6 RL73 2E 3.2 2.6 0.5 0.6 RL73 2H 5.0 2.5 0.5 0.6 RL73 3A 6.3 3.1 0.5 0.6 Packaging: 4000 Pieces (7" Reel) 5000 Pieces (7" Reel) 10000 Pieces (13" Reel) L d -+0.2 0.1 0.3 0.4 0.4 0.4 0.4 W D d C How to Order RL73 K Common Part T.C.R. RL73 H - 100ppm (± 1% Tol) K - 200ppm (± 2%/5% Tol) 2A 1R0 Chip Size Resistance Value 2A - 08:05 2B - 12:06 0.1 ohm (100 milli ohms) R10 2E - 12:10 1.0 ohm (1000 milli ohms) 1R0 2H - 20:10 10 ohm (10 ohms) 10R 3A - 25:12 G Tolerance F - ± 1% G - ± 2% J - ± 5% TD Pack Style TG - Cut Tape Lengths TE - 4000 Reel TD - 5000 Reel TP - 10000 Reel Please Request Full Data Sheet F0744 MEGGITT ELECTRONIC COMPONENTS