參數(shù)資料
型號： P3300AA61
英文描述： solid state crowbar devices
中文描述： 固態(tài)撬棍設(shè)備
文件頁數(shù)： 86/161頁
文件大?。?/td> 986K
代理商： P3300AA61
ITU-T K.20 and K.21
SIDACtor
Data Book
4 - 12
Teccor Electronics
(972) 580-7777
External Protectors
For equipment being tested to the exposed level, it is standard practice for external
line protectors (typically gas tubes) to be used in order to handle the large surge
currents generated during K.20 and K.21 qualification. Realizing that these protectors
can affect the characteristics of the EUT, it is important that the protectors used be
agreed upon by the principal parties involved (the equipment supplier and testing
administrator). Once agreed upon, the protectors should be used when primary
protection is specified, and allowance should be given for a new set of protectors after
the completion of each test sequence.
Note:
An alternative to using external protectors is for the test administrator to simulate the
conditions expected (as if the external protectors were used) by modifying the surges
found in K.20 and K.21.
Equipment Boundaries
Because of the numerous types of equipment, during K.20 and K.21 testing ITU-T
looks at each EUT as a
“
black box
”
with three terminals (A, B, and E). The applicant is
expected to define the boundaries of this
“
black box
”
, and in doing so, should be aware
that any protective device within these boundaries is considered an unchangeable part
of that piece of equipment.
Permitted Malfunction or Damage
During K.20 and K.21 qualification, ITU-T recognizes two levels of malfunction or
damage to the EUT:
Level A states that equipment withstands the test without damage or disturbance
and operates properly after the test. If specifically permitted, the administration
may accept the opening of the fuse.
Level B states that a fire hazard does not occur in the equipment as a result of the
test, and that any permanent damage or malfunction is confined to a small number
of external line interface circuits (as defined by the test administrator).
The acceptable level of malfunction for each test is specified under Acceptance
Criteria.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P3300AA61L 功能描述:硅對稱二端開關(guān)元件 3Chp 300V 50A RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復通態(tài)電流: 額定重復關(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 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AA
P3300AA61RP 功能描述:硅對稱二端開關(guān)元件 3Chp 300V 50A RoHS:否 制造商:Bourns 轉(zhuǎn)折電流 VBO:40 V 最大轉(zhuǎn)折電流 IBO:800 mA 不重復通態(tài)電流: 額定重復關(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 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AA
P3301 制造商:TYAN 功能描述:- Bulk
P-3301 制造商:Eveready 功能描述:
P3-30100 制造商:OTTO Engineering Inc 功能描述:S/A P3-31111 WITH
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