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1. Define the circuit’s operating parameters.
Fill in the following information about the circuit:
Maximum ambient operating temperature
______________
Normal operating current
______________
Maximum operating voltage (RGE is 16 V max.)
______________
Maximum interrupt current
______________
2. Select the PolySwitch RGE device that will accommodate the
circuit’s maximum ambient operating temperature and
normal operating current.
Look across the top of the table below to find the temperature that
most closely matches the circuit’s maximum ambient operating temper-
ature. Look down that column to find the value equal to or greater than
the circuit’s normal operating current. Now look to the far left of that
row to find the part number for the RGE device that will best accommo-
date the circuit.
The thermal derating curve located on the next page is a normalized
representation of the data in the table below.
I
Hold vs. temperature
Part
Maximum ambient operating temperatures (°C)
number
–40°
–20°
0°
20°
25°
40°
50°
60°
70°
85°
RGE300
4.4
4.0
3.6
3.1
3.0
2.6
2.4
2.1
1.9
1.4
RGE400
5.9
5.3
4.8
4.1
4.0
3.5
3.2
2.8
2.5
1.9
RGE500
7.3
6.6
6.0
5.2
5.0
4.4
4.0
3.6
3.1
2.4
RGE600
8.8
8.0
7.2
6.2
6.0
5.2
4.8
4.2
3.8
2.8
RGE700
10.3
9.3
8.4
7.3
7.0
6.2
5.6
5.0
4.4
3.3
RGE800
11.7
10.7
9.6
8.3
8.0
6.9
6.4
5.6
5.1
3.7
RGE900
13.2
11.9
10.7
9.4
9.0
7.9
7.2
6.4
5.6
4.2
RGE1000 14.7
13.3
12.0
10.3
10.0
8.7
8.0
7.0
6.3
4.7
RGE1100 16.1
14.6
13.1
11.5
11.0
9.7
8.8
7.8
6.9
5.2
RGE1200 17.6
16.0
14.4
12.4
12.0
10.4
9.6
8.4
7.6
5.6
RGE1400 20.5
18.7
16.8
14.5
14.0
12.1
11.2
9.8
8.9
6.5
130 RGE Devices
Raychem Circuit Protection Devices
RGE
Radial Leaded
New
New
New
New
New
New
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RGE(7)
1/15/99 11:16 AM
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