Pulse Withstanding
Chip Resistors
PWC Series
Welwyn Components
Pulse Performance Data
Single Pulse
1000
Pulse Power P (W)
100
0805
1206
2010
2512
10
1
0.0001
0.001
Single Impulse
The single impulse graph is the result of
50 impulses of rectangular shape
applied at one minute intervals. The
limit of acceptance was a shift in
resistance of less than 1% from the
initial value. The power applied was
subject to the restrictions of the
maximum permissible impulse voltage
graph as shown.
0.01
Pulse Duration ti (s)
0.1
1
Continuous Pulses
100
Pulse Power P (W)
10
0805
1206
2010
2512
1
Continuous Load Due to
Repetitive Pulses
The continuous load grpah was
obtained by applying repetitive
rectangular pulses where the pulse
period was adjusted so that the average
power dissipated in the resistor was
equal to its rated power at 70°C. Again
the limit of acceptance was a shift in
resistance of less than 1% from the
initial value.
0.1
0.0001
0.001
0.01
Pulse Duration ti (s)
0.1
1
Pulse Voltage
10000
Pulse Voltage (Volts)
1000
0805
1206
2010
2512
100
10
0.0001
0.001
0.01
Pulse Duration ti (s)
0.1
1
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue G · 03.06
WELWYN [ WELWYN COMPONENTS LIMITED ]
