RW Series High Power SMD Wirewound Resistors 5 and 7 watt Ohmite has used its thermal management expertise to produce a unique resistor design. The resistor body incorporates fins identical to a heatsink. These fins, as with a heatsink, increase the surface area of the part and allow for greater power dissipation. This unique design allows a small footprint for the SMD device and a high power dissipation. These 5 and 7 watt resistors are extremely stable with a load life drift of only 1%. A special flat has been designed in to the part for pick and place operations. F e at u r e s •Finned design facilitates cooling •High Power Density •Wide Resistance Range •Tight Tolerance •Low TCR Characteristics Resistance range Non-inductive range RW5S0 RW7S0 7 watts 5 watts 10 watts 7 watts 0.1Ω ~ 50K 0.1Ω ~ 100K 0.1Ω ~ 12.5K 0.1Ω ~ 20K Tolerance 100 0.5%, 1%, 5% Temperature Coefficient 0.1Ω ~ 0.99Ω: ±90ppm 1Ω ~ 10Ω: ±50ppm 10Ω+: ±20ppm Operating temp. range 70 80 60 40 20 0 0 -55°C ~ +155°C Max. working voltage Weight Derating Percent Rated Power Power at 25°C at 70°C 25 50 75 100 125 Ambient Temperature, oC 150 (PxR)1/2 5.67g 11.34g P e rf o r m a n c e D ATA Temp. cycle (-55°C to 125°C, 1000 cycles) Load Life (1000 hours at 25°C) Immersion (260°C for 10 sec.) Leaching (260°C Solder immersion, 60 sec.) Thermal Shock (Units at -55°C, then rated power applied) Flammability UL Material rating ±0.5%+.05Ω ±1.0%+.05Ω ±0.1%+.05Ω No visible leaching No mechanical damage UL94V0 (continued) 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 35 RW Series High Power SMD Wirewound Resistors 5 and 7 watt dimensions ±0.020 in. / ±0.51 mm Tape and Reel Overall Dimensions RW5S0 RW7S0 Length Width Height 0.806 / 20.47 0.365 / 9.27 0.406 / 10.31 1.128 / 28.65 0.471 / 11.96 M 0.600 / 15.24 5S0 (FA) N 77mm Reel Width 46mm Tape Width L 7S0 (FB) FA (5S0) Reel Hub Diameter Reel Outer Diameter 0.51 / 12.95 Land Pattern 0.890 / 22.61 N 1.000 / 25.40 1.330 / 29.59 M L 0.200 / 5.08 0.220 / 5.59 Pitch O FB (7S0 ) 77mm 560mm 560mm 44mm 44mm 20mm 46mm 24mm 0.450 / 11.43 0.520 / 13.21 Power Rating and Temperature Rise data based on the recommended Land Patterns using 10 oz. copper PCB. FR-4 material. 0.062" thick. 4 layer. O o rd e r i n g i n f o r m a t i o n Component type R = resistor Type of Base S = standard Package FA = 5W FB = 7W Package Modifier A, B sequential Tolerance D = 0.50% F = 1% J = 5% RW5S0FA1K00FET Component Modifier Wattage 70°C 25°C 5S0 = 5W 7W W = wirewound 7S0 = 7W 10W 36 Standard part numbers For RW Series T = Tape and Reel (optional) 5W=300/reel 7W=250/reel E = RoHS compliant Resistance Value R = Decimal Examples: K = 1,000 R249 = 0.249 ohms M = 1,000,000 24R9 = 24.9 ohms 2K49 = 2,490 ohms Resistance 0.10 1.0 10 20 47 Tolerance Part Number 1% 1% 5% 5% 5% RW5S0FAR100FE RW5S0FA1R00FE RW5S0FA10R0JE RW5S0FA20R0JE RW5S0FA47R0JE 100 470 1000 4700 10,000 5% 5% 5% 5% 5% RW5S0FA100RJE RW5S0FA470RJE RW5S0FA1K00JE RW5S0FA4K70JE RW5S0FA10K0JE 1.0 10 100 1000 10,000 100,000 1% 1% 1% 1% 1% 1% RW7S0FB1R00FE RW7S0FB10R0FE RW7S0FB100RFE RW7S0FB1K00FE RW7S0FB10K0FE RW7S0FB100KFE 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]