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SMP100MC-320 View Datasheet(PDF) - STMicroelectronics

Part Name
Description
Manufacturer
SMP100MC-320
ST-Microelectronics
STMicroelectronics ST-Microelectronics
SMP100MC-320 Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
SMP100MC
Figure 8: Variation of thermal impedance
junction to ambient versus pulse duration
(Printed circuit board FR4, SCu=35µm,
recommended pad layout)
Zth(j-a)/Rth(j-a)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.E-02
1.E-01
tp(s)
1.E+00
1.E+01
1.E+02
1.E+03
Figure 9: Relative variation of junction
capacitance versus reverse voltage applied
(typical values)
C [VR] / C [VR=2V]
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1
10
VR(V)
100
F =1MHz
VOSC = 1VRMS
Tj = 25°C
1000
APPLICATION NOTE
In wireline applications, analog or digital, both central office and subscriber sides have to be protected.
This function is assumed by a combined series / parallel protection stage.
Ring
relay
Line
Line
Ex. Analog line card
Ex. ADSL line card or terminal
In such a stage, parallel function is assumed by one or several Trisil, and is used to protect against short
duration surge (lightning). During this kind of surges the Trisil limits the voltage across the device to be
protected at its break over value and then fires. The fuse assumes the series function, and is used to pro-
tect the module against long duration or very high current mains disturbances (50/60Hz). It acts by safe
circuits opening. Lightning surge and mains disturbance surges are defined by standards like GR1089,
FCC part 68, ITU-T K20.
Fuse TCP 1.25A
Fuse TCP 1.25A
Tip L
T1
SMP100MC-xxx
Gnd
T2
Fuse TCP 1.25A
Ring L
Tip S
SMP100MC-xxx
Gnd
SMP100MC-xxx
Ring S
Typical circuit for subscriber side
Typical circuit for central office side
5/10
 

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