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P4KE440 PDF预览

P4KE440

更新时间: 2024-01-18 05:04:25
品牌 Logo 应用领域
鲁光 - LGE 瞬态抑制二极管局域网
页数 文件大小 规格书
4页 291K
描述
400 Watts Transient Voltage Suppressor Diodes

P4KE440 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Transferred零件包装代码:DO-41
包装说明:O-PALF-W2针数:2
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8541.10.00.50风险等级:5.3
其他特性:UL RECOGNIZED最大击穿电压:484 V
最小击穿电压:396 V外壳连接:ISOLATED
配置:SINGLE二极管元件材料:SILICON
二极管类型:TRANS VOLTAGE SUPPRESSOR DIODEJEDEC-95代码:DO-41
JESD-30 代码:O-PALF-W2湿度敏感等级:1
最大非重复峰值反向功率耗散:400 W元件数量:1
端子数量:2最高工作温度:175 °C
最低工作温度:-65 °C封装主体材料:PLASTIC/EPOXY
封装形状:ROUND封装形式:LONG FORM
峰值回流温度(摄氏度):NOT SPECIFIED极性:UNIDIRECTIONAL
最大功率耗散:1 W认证状态:Not Qualified
最大重复峰值反向电压:356 V表面贴装:NO
技术:AVALANCHE端子形式:WIRE
端子位置:AXIAL处于峰值回流温度下的最长时间:NOT SPECIFIED
Base Number Matches:1

P4KE440 数据手册

 浏览型号P4KE440的Datasheet PDF文件第1页浏览型号P4KE440的Datasheet PDF文件第2页浏览型号P4KE440的Datasheet PDF文件第3页 
P4KE SERIES  
400 Watts Transient Voltage Suppressor Diodes  
TVS APPLICATION NOTES:  
Transient Voltage Suppressors may be used at various points in a circuit to provide various degrees of  
protection. The following is a typical linear power supply with transient voltage suppressor units placed at  
different points. All provide protection of the load.  
FIGURE 1  
Transient Voltage Suppressors 1 provides maximum protection. However, the system will probably require  
replacement of the line fuse(F) since it provides a dominant portion of the series impedance when a surge is  
encountered.  
However, we do not recommend to use the TVS diode here, unless we can know the electric circuit  
impedance and the magnitude of surge rushed into the circuit. Otherwise the TVS diode is easy to be  
destroyed by voltage surge.  
Transient Voltage Suppressor 2 provides execllent protection of circuitry excluding the transformer(T).  
However, since the transformer is a large part of the series impedance, the chance of the line fuse opening  
during the surge condition is reduced.  
Transient Voltage Suppressor 3 provides the load with complete protection. It uses a unidirectional  
Transient Voltage Suppressor, which is a cost advantage. The series impedance now includes the line fuse,  
transformer, and bridge rectifier(B) so failure of the line fuse is further reduced. If only Transient Voltage  
Suppressor 3 is in use, then the bridge rectifier is unprotected and would require a higher voltage and current  
rating to prevent failure by transients.  
Any combination of these three, or any one of these applications, will prevent damage to the load. This would  
require varying trade-offs in power supply protection versus maintenance(changing the time fuse).  
An additional method is to utilize the Transient Voltage Suppressor units as a controlled avalanche bridge.  
This reduces the parts count and incorporates the protection within the bridge rectifier.  
FIGURE 2  
http://www.luguang.cn  
mail:lge@luguang.cn  

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