SMD Power Resistors
Type 3520 Series
Type 3520 Series
Characteristics Electrical
Power Rating:
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
±200ppm
±350ppm**(below 10R)
Resistance Grid Value:
to
1R0 - 1M0
Temperature Coefficient:
pleased
±5%
Resistance Range:
is
400V
Resistance Tolerance(%):
Electronics
200V
Max. Overload Voltage:
Tyco
1 Watt at 70°C**
Max. RCWV*:
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
I
1 Watt at 70°C
I
Small Size to Power Ratio
I
Supplied on Tape
I
Available via Distribution
I
60
Value Marked on Resistor
40
20
0
-55
I
200 Volt Working Voltage
I
Laboratory Kit Available
I
-20
0 20 40
60 70 80
100
120 125
Ambient Temperature (°C)
400 Volt Maximum Overload
I
-40
Low Profile
For resistors operated in ambient temperatures above 70°C, 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.
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