LCAS Asymmetrical Multiport Device
LCAS Asymmetrical Multiport Device
This is an integrated multichip solution for protecting multiple twisted pair from
1
(R )
6
(T )
overvoltage conditions. Based on a six-pin surface mount SOIC package, it is
equivalent to four discrete DO-214AA or two TO-220 packages. Available in surge
current ratings up to 500 A, the multiport line protector is ideal for densely populated
line cards that cannot afford PCB inefficiencies or the use of series power resistors.
1
2
5
(G )
2
(G )
2
1
3
(T )
4
(R )
For a diagram of an LCAS (Line Circuit Access Switch) application, see Figure 3.21.
1
2
Electrical Parameters
VDRM
VS
VDRM
Volts
Pins 1-2, 4-5
180
230
VS
CO
pF
Volts
Part
Volts
Volts
VT
IDRM
IS
IT
IH
Number *
A1220U_4
A1225U_4
Pins 3-2, 6-5
100
100
Volts
µAmps
mAmps Amps mAmps
Pins 3-2, 6-5, 1-2, 4-5
130
130
220
290
4
4
5
5
800
800
2.2
2.2
120
120
30
30
* For individual “UA”, “UB”, and “UC” surge ratings, see table below.
General Notes:
•
•
•
•
•
•
•
All measurements are made at an ambient temperature of 25 °C. IPP applies to -40 °C through +85 °C temperature range.
I
PP is a repetitive surge rating and is guaranteed for the life of the product.
Listed SIDACtor devices are bi-directional. All electrical parameters and surge ratings apply to forward and reverse polarities.
V
DRM is measured at IDRM.
VS is measured at 100 V/µs.
Special voltage (VS and VDRM) and holding current (IH) requirements are available upon request.
Off-state capacitance is measured between Pins 1-2 and 3-2 at 1 MHz with a 2 V bias and is a typical value for “UA” product. “UB”
and “UC” capacitance is approximately 2x higher.
Surge Ratings
IPP
IPP
IPP
IPP
IPP
ITSM
60 Hz
Amps
2x10 µs
Amps
8x20 µs
Amps
10x160 µs
Amps
10x560 µs
Amps
10x1000 µs
Amps
di/dt
Series
Amps/µs
A
B
C
150
250
500
150
250
400
90
150
200
50
100
150
45
80
100
20
30
50
500
500
500
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© 2002 Teccor Electronics
®
SIDACtor Data Book and Design Guide
TECCOR [ TECCOR ELECTRONICS ]
