Data Sheet

SMD Power Resistors

Type 3520 Series

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.

Key Features

I 1 Watt at 70°C

I Small Size to Power Ratio

I Supplied on Tape

I Available via Distribution

I Value Marked on Resistor

I 400 Volt Maximum Overload

I 200 Volt Working Voltage

I Laboratory Kit Available

I 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 70°C**

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

-55 -40 -20 0 20 40 60 70 80 100 120 125

100

Rated Power (%)

Ambient Temperature (°C)

For resistors operated in ambient temperatures above 70°C,

power rating must be derated in accordance with this curve.

PAGE 1
SMD Power Resistors Type 3520 Series Key Features I 1 Watt at 70°C I Small Size to Power Ratio I Supplied on Tape I Available via Distribution I Value Marked on Resistor I 400 Volt Maximum Overload I 200 Volt Working Voltage I Laboratory Kit Available I 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.
PAGE 2
SMD Power Resistors Type 3520 Series 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.