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參數(shù)資料
| 型號： | P1803AC |
| 英文描述： | SIDAC|210V V(BO) MAX|800MA I(S)|TO-220VAR |
| 中文描述： | SIDAC的|高達210V五（公報）最大| 800mA的我（縣）|對220VAR |
| 文件頁數(shù)： | 60/161頁 |
| 文件大?。?/td> | 986K |
| 代理商： | P1803AC |
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Analog Line Cards
SIDACtor
Data Book
3 - 20
Teccor Electronics
(972)580-7777
Reference Diagrams
Figure 3-19
uses Teccor
’
s
“
C
”
rated SIDACtors and the F1250T TeleLink fuse to meet
the surge immunity requirements of Bellcore 1089. On-hook protection is
accomplished using Teccor
’
s P1200SC and P200SC which were specifically designed
to protect Lucent Microelectronics Line Card Access Switch (LCAS). Off-hook
protection is accomplished using two P0641SC
’
s. Note the absence of any additional
series resistance. This is because the
“
C
”
series SIDACtor and F1250T TeleLink were
designed to withstand GR 1089 without the aid of additional components such as line
feed resistors and PTC
’
s.
Figure 3-20
uses the P2600SA and P0721SA for over voltage protection and the
F0500T for over current protection in addition to 20
of series resistance on both TIP
and RING. The series resistance is required to limit the transient surge currents to
within the surge current rating of the
“
A
”
series SIDACtors and the F0500T TeleLink
fuse.
Figure 3-21
uses Teccor
’
s Battrax to protect AMD
’
s Am79R79 from over-voltages and
the F1250T to protect against sustained power cross conditions. The Battrax was
designed specifically to protect SLIC
’
s that can not withstand potential differences
greater than V
REF
±10V.
Figure 3-22
shows how to protect a SLIC by utilizing 20
series resistors on both TIP
and RING in addition to Teccor
’
s Battrax (B1100CC) and a diode bridge (General
Semiconductor p/n EDF1BS). However, the overshoot caused by the diode bridge
must be considered. The series resistance (a minimum of 20
on TIP and 20
on
RING) limits the 100A simultaneous surge current from TIP to GND and RING to GND
(200A total) to within the surge current rating of the SIDACtor and Battrax. The diode
bridge shunts all positive voltages to GND and the B1100CC shunts all negative
voltages greater than |-V
REF
–
1.2V| to GND.
Some applications may require the use of 50
line feed resistors. In this instance,
Figure 3-23
shows how to replace multiple SLIC protectors using one B1160CC and
two EDF1BS diode bridges. The overshoot caused by the diode bridge must be
considered. The only caution in such an approach with regards to the Battrax is that it
is imperative that the sum of the loop currents does not exceed the Battrax
’
s holding
current. In
Figure 3-23
, the loop current would have to be limited to 80mA. For
applications that would require 4 twisted pair to be protected with one Battrax, the
B1200CC should be used and the loop current would have to be limited to 50mA.
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