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參數(shù)資料
| 型號： | TISP4A270H3BJ |
| 廠商： | BOURNS INC |
| 元件分類： | 浪涌電流限制器 |
| 英文描述： | LCAS R LINE Protector |
| 中文描述： | 217 V, 60 A, SILICON SURGE PROTECTOR, DO-214AA |
| 封裝： | ROHS COMPLIANT, PLASTIC, SMB, 2 PIN |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 242K |
| 代理商： | TISP4A270H3BJ |
APRIL 2002 - REVISED FEBRUARY 2005
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4A270H3BJ LCAS R
LINE
Protector
Calculation of the TISP4A270H3BJ Voltage Values (Continued)
Box A:
The voltage rating of the break and ring return switches and their isolation decreases with temperature. At the minimum LCAS
operating temperature of -40
°
C, the switch rating is
±
310 V.
Box B:
A switch pole voltage rating to ground is reduced by any opposing bias voltage applied to the other pole. For battery-backed ringing
the d.c. bias on T
is zero. Bias voltages are applied to the R
and T
BAT
poles by the SLIC. For SLIC output levels of zero and -60 V, the
R
LINE
and T
LINE
voltage ratings to ground become +250 V and -310 V at -40
°
C.
Box C:
Allowing for the extreme condition of a power fault at -40
°
C, the overvoltage protector V
at its highest temperature must not
exceed +250 V and -310 V. The IEEE Standard
C62.37.1-2000, IEEE Guide for the Application of Thyristor Surge Protective Devices, pp 25-27
recommends a factor of 1.15 for the ratio of the power fault V
(BO)
to the 25
°
C V
(BO)
. Applying this factor makes the 25
°
C V
(BO)
voltage values
+217 V and -270 V.
Box D:
From the V
(BO)
values the values of protector 25
°
C V
DRM
were determined as +160 V and -222 V.
Box E:
Derating the 25
°
C V
down to the LCAS minimum operating temperature gives -40
°
C V
values of +148 V and -206 V.
A further rating check has to be done on the ringing access switch, SW4. The limit condition is in the negative ringing polarity. The applied
ringing voltage to the R
terminal must not exceed -205 V when the R
terminal is at +250 V. For a battery voltage of -40 V and -60 V
the a.c. ringing levels must not exceed 117 V rms and 102 V rms respectively. In IVD (Integrated Voice Data) applications the a.c. ringing level
must be reduced by the level of digital signal applied to the line. For a 20 V peak ADSL signal level, the ringing voltages reduce to 103 V rms
and 89 V rms respectively.
Figure 9 shows a typical application circuit. Fuses F1 and F2 need high breaking capacity to safely interrupt 40 A rms (UL 60950) and
60 A rms (Telcordia GR-1089-CORE) currents from a 600 V rms source. The Bourns
Telefuse
type B1250T is a surface mount fuse which
has UL recognition for these UL and Telcordia standards. The TISP4A270H3BJ is overload rated to carry currents up to 60 A rms for the time
period that it takes the fuse to operate.
Figure 9. ADSL IVD using Common Protection
TISP4A270H3
TI
B1250T
B1250T
SP4165H3
R
G
Ring
generator
R1
V
BAT
V
RING
SLIC
RING
TIP
SW3
Ring
return
switch
SW4
Ringing
access
switch
SW1
Break
switch
C
l
AI4AITAMA
F1
F2
ADSL
MODEM
V
bat
V
ADSL
T
LINE
R
RINGING
T
RINGING
T
BAT
F
GND
R
BAT
V
BAT
SW2
Break
switch
S
p
R
LINE
Low
pass
filter
High
pass
filter
C1
R2
Fuse
overcurrent
protectors
D
GND
V
DD
T
SD
LATCH
INPUT
'7581 LCAS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TISP4A270H3BJR | 功能描述:硅對稱二端開關(guān)元件 RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復(fù)通態(tài)電流: 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:25 V 關(guān)閉狀態(tài)漏泄電流（在 VDRM IDRM 下）: 保持電流（Ih 最大值）:50 mA 開啟狀態(tài)電壓:5 V 關(guān)閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AA |
| TISP4A270H3BJR-S | 功能描述:硅對稱二端開關(guān)元件 PROTECTOR - SINGLE BIDIRECTIONAL RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復(fù)通態(tài)電流: 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:25 V 關(guān)閉狀態(tài)漏泄電流（在 VDRM IDRM 下）: 保持電流（Ih 最大值）:50 mA 開啟狀態(tài)電壓:5 V 關(guān)閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-214AA |
| TISP4C015L1NR-S | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 8 V(DRM) 30A(IPP) 15V(BO) RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
| TISP4C020L1NR-S | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 POTECTOR SNGLE BIDRE RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
| TISP4C025L1NR-S | 功能描述:PROTECTOR SGL BIDIRECTIONAL LF RoHS:是 類別:過電壓，電流，溫度裝置 >> TVS - 晶閘管 系列:- 產(chǎn)品培訓(xùn)模塊:ESD Protection Products 標(biāo)準(zhǔn)包裝:3,000 系列:- 電壓 - 擊穿:95V 電壓 - 斷路:75V 電壓 - 導(dǎo)通狀態(tài):3V 電流 - 峰值脈沖(8 x 20µs):220A 電流 - 峰值脈沖(10 x 1000µs):50A 電流 - 保持 (Ih):150mA 元件數(shù):1 電容:83pF 封裝/外殼:DO-214AA，SMB 包裝:帶卷 (TR) |
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