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參數(shù)資料
| 型號： | SSRP130 |
| 英文描述： | DUAL ASYMMETRICAL OVERVOLTAGE PROTECTION FOR TELECOM LINE - (ASD) |
| 中文描述： | 雙不對稱的電信線過電壓保護- （ASD）的 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大小： | 124K |
| 代理商： | SSRP130 |
Fig 1 :
Topology of the classical line card protection.
APPLICATION INFORMATION
Fig 2 :
Classical use of the SSRP130B1.
The classical line card requires protection before
the ring relay and a second one for the SLIC (fig.1).
The use of new SLICs with integrated ring
generator or board based on solid state ring relay
suppresses this second protection (Fig. 2). Then
the only remaining stage, located between the line
and the ring relay, has to optimize the protection.
The classical symmetrical first stage protector
becomes not sufficient to avoid any circuit
destruction during surges.
The SSRP130B1 device takes into account this
fact and is based on asymmetrical voltage
characteristics (Fig.3a). The ring signal being
shifted back by the battery voltage, the
SSRP130B1 negative breakover value Vbo- is
greater than the positive one Vbo+. This point
guarantees a protection operation very close to the
peak of the normal operating voltage without any
disturbance of the ring signal.
Fig 3 :
SSRP130B1 electrical characteristics.
I
V
Vbo-
Vbo+
a : Line to ground characteristics.
V
BR
-
V
BR
-
b : Line to line characteristics.
In addition with the 2 crowbar functions which
perform the protection of both TIP and RING lines
versus ground, a third cell assumes the differential
mode protection of the SLIC. The breakdown
voltage values of this third cell are the same for
both positive and negative parts of the
characteristics and are equivalent to the negative
breakdown voltage value of the TIP and RING
lines versus GND cells (Fig.3 b).
PTC
PTC
R
R
SLIC
SSRP130B1
Tip
Ring
(*)
(*) SLIC with integrated ring generator or solid state relay.
LINE
1st
stage
2nd
stage
PTC
PTC
R
R
SLIC
Ring generator
Line
Tip
Ring
SSRP130B1
2/7
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SSRP130B1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL ASYMMETRICAL OVERVOLTAGE PROTECTION FOR TELECOM LINE |
| SSRP130B1RL | 功能描述:TVS二極管陣列 Dual Overvolt Protec RoHS:否 制造商:Littelfuse 極性: 通道:4 Channels 擊穿電壓: 鉗位電壓:11.5 V 工作電壓:2.5 V 峰值浪涌電流:20 A 安裝風格:SMD/SMT 端接類型:SMD/SMT 系列: 最小工作溫度:- 40 C 最大工作溫度:+ 85 C |
| SSRPCDM12D5 | 制造商:Schneider Electric 功能描述:SOLID STATE RELAY PANEL MOUNT 100VDC 12A 制造商:SCHNEIDER ELECTRIC 功能描述:solid state relay - panel mounting - input 3-32 V |
| SSRPCDM25D5 | 制造商:Schneider Electric 功能描述:SOLID STATE RELAY PANEL MOUNT 100VDC 25A |
| SSRPCDM40D5 | 制造商:Schneider Electric 功能描述:SOLID STATE RELAY PANEL MOUNT 100VDC 40A |
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