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參數(shù)資料
| 型號： | TISP4350L3BJ |
| 廠商： | Power Innovations International, Inc. |
| 英文描述： | BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS |
| 中文描述： | 雙向可控硅過電壓保護器 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大小： | 223K |
| 代理商： | TISP4350L3BJ |
P R O D U C T I N F O R M A T I O N
9
AUGUST 1999 — REVISED NOVEMBER 1999
TISP4070L3BJ, TISP4350L3BJ
BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
fuse values
There are two areas of fuse criteria; surge capability (FCC Part 68 impulse) and power cross capability
(UL1950 clause 6.6 and annex NAC).
To survive an impulse, a fuse must have a melting I
2
t rating greater than the impulse I
2
t. The fuse I
2
t rating
should be specified for the impulse waveshape current as the normal d.c. rating may not result in adiabatic
conditions. Alternatively, the fuse may be specified for a rated current under the impulse waveshape
conditions.
An exponentially decaying impulse with a current amplitude I
PP
and 50 % amplitude decay time of t
D
has an
I
2
t value of 0.72I
PP2
t
D
. Test waveforms have tolerences and the formula can be approximated to I
PP2
t
D
, giving
about an 40 % allowance to cover tolerences e.g. +5 % on I
PP
and +30 % on t
D
. Using the approximate
formula, the I
2
t values for typical waveforms are shown in the table below.
Fuse power cross current capability can be determined from it’s time-current curve. The fuse must be rated to
break the current at the applied power cross a.c. voltage level.
fuse values for FCC Part 68
Fuses must not blow on the Type B surge. To survive a 37.5 A Type B surge, the fuse needs to have an I
2
t of
greater than 0.45 A
2
s. Fuses, such as the 1 A surface mount SMTelecom 0436001.PR or the 0.5 A axial
lead 2AG Surge Withstand 230.500 (both from the Littelfuse) will meet this criteria.
boxes G and H
The criterion for box G is a fire enclosure and spacings (See box D
comments).
A yesresult passes the equipment and a noresult leads to box H.
The criterion for box H is to pass Tests 2, 3 and 4. Test 2 is not required
if there is overcurrent protection that reduces currents above 1.3 A
(See box C).
High performance modems, using fuses and without fire enclosures,
must pass tests 2, 3, possibly 3A if the fuse opens, and 4. For standard
modems, using fuses of 1 A or less and without fire enclosures, tests
3, 3A and 4 must be passed.
If the two pass criteria of each of the tests performed are met, this is a
yes and the equipment passes.
A no result fails the equipment.
SPECIFICATION
AMPLITUDE I
PP
A
200
100
37.5
37.5
500
100
CURRENT WAVESHAPE
t
R
/t
D
(μs)
10/160
10/560
5/320
5/310
2/10
10/1000
MELTING I
2
t
A
2
s
6.4
5.6
0.45
0.45
2.5
10
FCC Part 68, Type A
FCC Part 68, Type B
UL 1950 / ITU-T K21
TELCORDIA (FORMALLY BELLCORE)
GR-1089
FLOW
COMMENT
Y
Y
G
N
H
N
Fail
Pass
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TISP4350L3BJR | 功能描述:硅對稱二端開關元件 RoHS:否 制造商:Bourns 轉折電流 VBO:40 V 最大轉折電流 IBO:800 mA 不重復通態(tài)電流: 額定重復關閉狀態(tài)電壓 VDRM:25 V 關閉狀態(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 關閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AA |
| TISP4350L3BJRS | 制造商:Bourns Inc 功能描述: |
| TISP4350L3BJR-S | 功能描述:硅對稱二端開關元件 RoHS:否 制造商:Bourns 轉折電流 VBO:40 V 最大轉折電流 IBO:800 mA 不重復通態(tài)電流: 額定重復關閉狀態(tài)電壓 VDRM:25 V 關閉狀態(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 關閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AA |
| TISP4350L3LM | 功能描述:硅對稱二端開關元件 RoHS:否 制造商:Bourns 轉折電流 VBO:40 V 最大轉折電流 IBO:800 mA 不重復通態(tài)電流: 額定重復關閉狀態(tài)電壓 VDRM:25 V 關閉狀態(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 關閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AA |
| TISP4350L3LMR | 功能描述:硅對稱二端開關元件 RoHS:否 制造商:Bourns 轉折電流 VBO:40 V 最大轉折電流 IBO:800 mA 不重復通態(tài)電流: 額定重復關閉狀態(tài)電壓 VDRM:25 V 關閉狀態(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 關閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AA |
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