SMD Power Resistors Type 3520 Series Key Features 1 Watt at 70C Small Size to Power Ratio Supplied on Tape Available via Distribution Value Marked on Resistor 400 Volt Maximum Overload 200 Volt Working Voltage Laboratory Kit Available Low Profile TE Connectivity is 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 7 reels of 4000 pieces. Characteristics - Electrical 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 80 60 40 20 0 -55 -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. 1773139 CIS BI 10/2011 Dimensions are in millimeters Dimensions are shown for For email, phone or live chat, go to: te.com/help and inches unless otherwise reference purposes only. specified. Values in brackets Specifications subject are standard equivalents. to change. Rated Power (%)SMD Power Resistors Type 3520 Series Dimensions L a W t b LW a b t 6.40 3.20 0.70 0.70 0.60 0.20 0.20 0.10 0.20 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 1 ohm 1000 milli ohms 1R0 3520 1K ohm J - 5% T - 4000 / reel 1000 ohms 1K0 1 Meg ohm 1000000 ohms 1M0 TE Connectivity, TE connectivity (logo) and TE (logo) are trademarks. Other logos, product and Company names mentioned herein may be trademarks of their respective owners. While TE has made every reasonable effort to ensure the accuracy of the information in this datasheet, TE does not guarantee that it is error-free, nor does TE make any other representation, warranty or guarantee that the information is accurate, correct, reliable or current. TE reserves the right to make any adjustments to the information contained herein at any time without notice. TE expressly disclaims all implied warranties regarding the information contained herein, including, but not limited to, any implied warranties of merchantabili- ty or fitness for a particular purpose. The dimensions in this datasheet are for reference purposes only and are subject to change without notice. Specifications are subject to change without notice. Consult TE for the latest dimensions and design specifications.