SMD POWER RESISTORS Type 3521 Series Key Features 2 Watts at 70C Small size to power ratio Supplied on tape Value marked on resistor Available via distribution TE Connectivity is pleased to introduce this low cost high power device, 500 volt suitable for auto placement in volume, and for most applications, including maximum high frequency operations, owing to the short lead structure. It is overload attractively priced and available on 7 reels of 4000 pieces. 250 volt Characteristics Electrical working voltage Power rating at 70C 2W Max RCWV* 250V Terminal finish Max overload voltage 500V matte Sn over Resistance Tolerance 1% Ni Resistance range 1R0 - 1M0 Temperature Coefficient <10R 200PPM 10R 1M0 100PPM >1M0 200PPM Temperature range -55C ~ +155C Ambient temperature 70C * 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. Dimensions in Dimensions Shown for 9-1773463-5 CIS WR 02/2015 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change SMD POWER RESISTORS Power derating curve For resistors operated in ambient temperatures above 70C, power rating must be derated in accordance with this curve. Dimensions L 0.10 W 0.15 t 0.10 a 0.25 b 0.20 6.35 3.20 0.55 0.60 1.80 Dimensions in Dimensions Shown for 9-1773463-5 CIS WR 02/2015 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change