SMD Power Resistors Type 3520 Series Type 3520 Series Tyco Electronics is Characteristics Electrical pleased to introduce this low cost high power device, suitable for auto placement in volume, and for most applications, including high frequency operations, owing to the short lead structure. It is attractively priced and available on Power Rating: 1 Watt at 70C** Max. RCWV*: 200V Max. Overload Voltage: 400V Resistance Tolerance(%): 5% Resistance Range: 1R0 - 1M0 Temperature Coefficient: 200ppm 350ppm**(below 10R) Resistance Grid Value: E-24 * Rated continuous working voltage (RCWV) shall be determined from RCWV = Rated Power x Resistance Value, or Maximum RCWV listed above, whichever is less ** 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, an opening in the PCB or enlarged silver conductor pads each end. Power Derating Curve 100 7" reels of 4000 pieces. Rated Power (%) 80 Key Features 1 Watt at 70C Small Size to Power Ratio Supplied on Tape Available via Distribution Value Marked on Resistor 60 40 20 0 -55 400 Volt Maximum Overload 200 Volt Working Voltage Laboratory Kit Available Low Profile -40 -20 0 20 40 60 70 80 100 120 125 Ambient Temperature (C) For resistors operated in ambient temperatures above 70C, power rating must be derated in accordance with this curve. Dimensions L a W t b L W a b t 6.40 0.20 3.20 0.20 0.70 0.10 0.70 0.20 0.60 0.10 Handling Recommendations When flow soldering - the land width must be smaller than the Chip Resistor width to properly control the solder application. Generally, the land width can be Chip Resistor width (W) x 0.7 to 0.8. When reflow soldering - solder application amount can be adjusted. Thus the land width can be set to W x 1.0 to 1.3. How to Order 3520 1K0 J T Common Part Resistance Value Tolerance Pack Style J - 5% T - 4000 / reel 1 ohm 1000 milli ohms 1R0 3520 1K ohm 1000 ohms 1K0 1 Meg ohm 1000000 ohms 1M0 Literature No. 1773139 Issued: 09-06 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. Specifications subject to change. www.tycoelectronics.com passives.tycoelectronics.com