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V571HA40 参数 Datasheet PDF下载

V571HA40图片预览
型号: V571HA40
PDF下载: 下载PDF文件 查看货源
内容描述: 压敏电阻产品 - 高能工业 [Varistor Products - High Energy Industrial]
分类和应用: 电阻器压敏电阻非线性电阻器
文件页数/大小: 5 页 / 129 K
品牌: LITTELFUSE [ LITTELFUSE ]
 浏览型号V571HA40的Datasheet PDF文件第1页浏览型号V571HA40的Datasheet PDF文件第2页浏览型号V571HA40的Datasheet PDF文件第3页浏览型号V571HA40的Datasheet PDF文件第5页  
Varistor Products  
High Energy Industrial  
HA Varistor Series  
Power Dissipation Ratings  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
Should transients occur in rapid succession, the average power dissipa-  
tion required is simply the energy (watt-seconds) per pulse times the  
number of pulses per second. The power so developed must be within  
the specifications shown on the Device Ratings and Specifications table  
for the specific device. Furthermore, the operating values need to be  
derated at high temperatures as shown in Figure 1. Because varistors  
can only dissipate a relatively small amount of average power they are,  
therefore, not suitable for repetitive applications that involve substantial  
amounts for average power dissipation.  
2
-55  
50 60  
70  
80  
90 100 110 120 130 140 150  
o
AMBIENT TEMPERATURE ( C)  
FIGURE 1. CURRENT, ENERGY AND POWER DERATING  
CURVE  
100  
90  
O
= Virtual Origin of Wave  
1
T = Time From 10% to 90% of Peak  
T
T
= Virtual Front Time = 1.25 • t  
= Virtual Time to Half Value (Impulse Duration)  
1
2
50  
Example: For an 8/20µs Current Waveform:  
8µs = T = Virtual Front Time  
1
20µs = T = Virtual Time to Half Value  
2
10  
O
T
TIME  
1
T
1
T
2
FIGURE 2. PEAK PULSE CURRENT WAVEFORM  
Transient V-I Characteristics Curves  
10000  
10000  
Maximum Clamping Voltage  
TA = -55 C to 85C  
V661  
V681CA32  
V481CA32  
HA40 Series  
110 to 750V AC Rating  
Maximum Clamping Voltage  
HA32 Series  
110 to 750V AC Rating  
TA = -55 C to 85C  
V751CA32  
V681  
V751  
V661HA32  
V571CA32  
V511CA32  
V551CA32  
V301CA32  
V571  
V551  
V441CA32  
V321CA32  
V331CA32  
V481  
V421  
V441  
V421CA32  
V391CA32  
V511  
V391  
V351  
V351CA32  
V331  
V321  
V301  
1000  
1000  
V271  
V251  
C111CA32  
V131CA32  
V201  
V141CA32  
V151CA32  
V181  
V271CA32  
0.01  
V251CA32 V201CA32  
V181CA32  
V131  
V141  
0.1  
V151  
V111  
100  
0.001  
100  
0.001  
0.1  
1
10  
100  
1000  
10000  
100000  
0.01  
1
10  
100  
1000  
10000  
100000  
Current (A)  
Current (A)  
FIGURE 3. MAXIMUM CLAMPING VOLTAGE (V111HA32 - V751HA32)  
FIGURE 4. MAXIMUM CLAMPING VOLTAGE (V111HA40 - V751HA40)  
93  
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