Datasheet

Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
PWR263S-35 Series Power Resistor
DIMENSIONS:
MM
(INCHES)
Soldering Profi le
Power dissipation is 2.8 W at an ambient temperature of 25 ˚C when mounted on a
double-sided copper board using FR4 standard, 70 µm of copper, 39 x 30 x 1.6 mm.
Pulse Power Rating
Energy in Joules
Overload Duration in Seconds
10
100
1
0.1
0.01
10
-7
10
-6
10
-5
10
-4
10
-3
10
-2
10
-1
The energy absorbed by the resistor expressed in Joules can be calculated by
multiplying the peak power of the pulse in watts times the length of the pulse in
seconds.
The energy should not exceed the limits shown in the graph. The overload voltage
should not exceed 1.5 times the maximum operating voltage.
Product Dimensions
7.8
(0.307)
10.1
(0.398)
8.0
(.315)
11.0
(.433)
5.08
(0.20)
1.3
(.051)
1.4
(0.055)
1.92
(0.076)
0.25
(0.010)
2.4
(0.095)
0.26
(0.10)
4.23
(0.166)
48 °
1.6
(0.063)
4.02
(0.158)
15.39
(0.606)
8.8
(0.347)
10.4
(0.409)
REF.
10.52
(0.414)
3.1
(0.122)
4.5
(0.177)
2.25
(0.089)
TOLERANCE:
±0.38
UNLESS OTHERWISE NOTED
(±0.015)
LEAD 0.102 MAX AT MOUNTING
COPLANARITY: (0.004) SURFACE
Recommended Pad Layout
25
75
125
175
225
275
0 50 100 150 200 250 300
Time (seconds)
Temperature (°C)
60 - 120 seconds
60 - 90
seconds
260 °C peak
190 °C
150 °C
220 °C
Ramp Down
6 °C/second
245 °C
Maximum of 20 seconds between
+245 °C and +260 °C
Ramp Up
3 °C/second maximum
10 seconds minimum
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