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參數(shù)資料
| 型號(hào)： | 1SMC5387 |
| 廠商： | PanJit International Inc. |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | surface mount silicon Zener diodes |
| 中文描述： | 硅表面貼裝齊納二極管 |
| 文件頁數(shù)： | 5/5頁 |
| 文件大?。?/td> | 275K |
| 代理商： | 1SMC5387 |
APPLICATION NOTE:
Since the actual voltage available from a given zener
diode is temperature dependent, it is necessary to
determine junction temperature under any set of
operating conditions in order to calculate its value. The
following procedure is recommended:
Lead Temperature, T
L
, should be determined from:
T
L
=
LA
P
D
+ T
A
LA
is the lead-to-ambient thermal resistance (
/W)
and P
D
is the power dissipation.
Junction Temperature, T
J
, may be found from:
T
J
= T
L
+
T
JL
T
JL
is the increase in junction temperature above the
lead temperature and may be found from Figure 3 for a
train of power pulses or from Figure 4 for dc power.
T
JL
=
JL
P
D
For worst-case design, using expected limits of Iz, limits
of P
D
and the extremes of T
J
(
T
J
) may be estimated.
Changes in voltage, Vz, can then be found from:
V
=
VZ
T
J
VZ
, the zener voltage temperature coefficient, is fount
from Figures 2.
Under high power-pulse operation, the zener voltage will
vary with time and may also be affected significantly be
the zener resistance. For best regulation, keep current
excursions as low as possible.
Data of Figure 3 should not be used to compute surge
capability. Surge limitations are given in Figure 5. They
are lower than would be expected by considering only
junction temperature, as current crowding effects cause
temperatures to be extremely high in small spots
resulting in device degradation should the limits of
Figure. 5 be exceeded.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 1SMC5388 | 制造商:TRSYS 制造商全稱:Transys Electronics 功能描述:SURFACE MOUNT SILICON ZENER DIODE |
| 1SMC54 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:ZENER OVERVOLTAGE TRANSIENT SUPPRESSORS |
| 1SMC54A | 制造商:EIC 制造商全稱:EIC discrete Semiconductors 功能描述:SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR |
| 1SMC54A TR13 | 功能描述:TVS DIODE 54VWM 87.1VC SMC 制造商:central semiconductor corp 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 類型:齊納 單向通道:1 雙向通道:- 電壓 - 反向關(guān)態(tài)（典型值）:54V 電壓 - 擊穿（最小值）:60V 電壓 - 箝位（最大值）@ Ipp:87.1V 電流 - 峰值脈沖（10/1000μs）:17.2A 功率 - 峰值脈沖:1500W（1.5kW） 電源線路保護(hù):無 應(yīng)用:通用 不同頻率時(shí)的電容:- 工作溫度:-65°C ~ 150°C（TJ） 安裝類型:表面貼裝 封裝/外殼:DO-214AB，SMC 供應(yīng)商器件封裝:SMC 標(biāo)準(zhǔn)包裝:1 |
| 1SMC54AT3 | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 54V 1500W 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 |
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