ASD鈩?/div>
MAIN APPLICATIONS
Where asymmetrical protection against lightning
strikes and other transient overvoltages is required :
s
Solid-State relays
s
SLIC with integrated ring generator
DESCRIPTION
The SSRP105B1 is a dual asymmetrical transient
voltage suppressor designed to protect a
solid-state ring relay or SLICs with integrated ring
generator from overvoltages.
The asymmetrical protection configuration is
necessary to allow the use of all different types of
ringing schemes.
SO-8
FUNCTIONAL DIAGRAM
FEATURES
s
s
s
Dual bi-directional asymmetrical protection
Stand-off voltages:
q
Between Line and Ground
+105V for positive voltages
-180V for negative voltages
q
Between Line and Line
+180V for positive voltages
-180V for negative voltages
Peak pulse current: I
PP
= 50A (5/310碌s)
Holding current:
q
I
H+
= 100mA
q
I
H-
= 150mA
TIP
1
8
GND
NC
2
7
GND
NC
3
6
GND
RING
4
5
GND
COMPLY WITH THE FOLLOWING STANDARDS
Peak Surge
Voltage
(V)
ITU-T K20 / K21
VDE0433
IEC61000-4-5
FCC Part 68
BELLCORE
GR1089 First level
1500
2000
Level 3
Level 4
1500
800
2500
1000
Voltage
Waveform
(碌s)
10/700
10/700
10/700
1.2/50
10/160
10/560
2/10
10/1000
Current
Waveform
(碌s)
5/310
5/310
5/310
8/20
10/160
10/560
2/10
10/1000
Required
Peak
current
(A)
38
50
50
100
200
100
500
100
Min. serial
resistor to meet
standards
(鈩?
-
-
-
-
18
10
10
19
TM: ASD is trademarks of STMicroelectronics.
October 2002 - Ed: 1A
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