參數(shù)資料
型號(hào)： V321HA40
廠商： Littelfuse, Inc.
元件分類： 壓敏電阻
英文描述： Varistor Products - High Energy Industrial
中文描述： 壓敏電阻器產(chǎn)品-高能源產(chǎn)業(yè)
文件頁數(shù)： 4/5頁
文件大小： 129K
代理商： V321HA40
100
1000
10000
0.001
0.01
0.1
1
10
100
1000
10000
100000
Maximum Clamping Voltage
HA40 Series
110 to 750V AC Rating
TA = -55 C to 85C
V
V751
V571
V551
V511
V481
V441
V421
V391
V351
V111
V131
V141
V151
V681
V331
V321
V301
V271
V251
V201
V181
V661
93
www.littelfuse.com
Varistor Products
2
V
P
HA Varistor Series
High Energy Industrial
Power Dissipation Ratings
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.
Transient V-I Characteristics Curves
100
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
AMBIENT TEMPERATURE (
o
C)
80
90
100
110
120
130
140 150
P
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
FIGURE 2. PEAK PULSE CURRENT WAVEFORM
100
90
50
10
O
1
T
T
1
T
2
TIME
P
O
1
= Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T
1
= Virtual Front Time = 1.25 t
T
2
= Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20
μ
s Current Waveform:
8
μ
s = T
1
= Virtual Front Time
20
μ
s = T
2
= Virtual Time to Half Value
100
1000
10000
0.001
0.01
0.1
1
10
100
1000
10000
100000
Current (A)
V
TA = -55 C to 85C
V681CA32
V751CA32
V481CA32
V441CA32
V421CA32
V391CA32
V571CA32
V661HA32
V551CA32
V511CA32
V301CA32
V331CA32
V321CA32
V351CA32
V271CA32
V251CA32
V201CA32
V181CA32
V151CA32
V141CA32
V131CA32
C111CA32
Maximum Clamping Voltage
HA32 Series
110 to 750V AC Rating
FIGURE 3. MAXIMUM CLAMPING VOLTAGE (V111HA32 - V751HA32)
FIGURE 4. MAXIMUM CLAMPING VOLTAGE (V111HA40 - V751HA40)
Current (A)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
V321HB34 功能描述:壓敏電阻 320V 40kA 3800pF RoHS:否 制造商:EPCOS 產(chǎn)品:MLV 電壓額定值 DC:22 V 電壓額定值 AC:17 V 鉗位電壓:50 V 直徑: 峰值浪涌電流:30 A 浪涌能量額定值:75 mJ 電容:74.2 pF 工作溫度范圍:- 55 C to + 125 C 安裝:SMD/SMT 封裝:Reel
V321HC32 功能描述:壓敏電阻 320V 40kA 1900pF RoHS:否 制造商:EPCOS 產(chǎn)品:MLV 電壓額定值 DC:22 V 電壓額定值 AC:17 V 鉗位電壓:50 V 直徑: 峰值浪涌電流:30 A 浪涌能量額定值:75 mJ 電容:74.2 pF 工作溫度范圍:- 55 C to + 125 C 安裝:SMD/SMT 封裝:Reel
V321HC40 功能描述:壓敏電阻 INDUSTRIAL VARISTOR HIGH ENERGY PCB USE RoHS:否 制造商:EPCOS 產(chǎn)品:MLV 電壓額定值 DC:22 V 電壓額定值 AC:17 V 鉗位電壓:50 V 直徑: 峰值浪涌電流:30 A 浪涌能量額定值:75 mJ 電容:74.2 pF 工作溫度范圍:- 55 C to + 125 C 安裝:SMD/SMT 封裝:Reel
V321HF34 功能描述:壓敏電阻 HIGH ENERGY RoHS:否 制造商:EPCOS 產(chǎn)品:MLV 電壓額定值 DC:22 V 電壓額定值 AC:17 V 鉗位電壓:50 V 直徑: 峰值浪涌電流:30 A 浪涌能量額定值:75 mJ 電容:74.2 pF 工作溫度范圍:- 55 C to + 125 C 安裝:SMD/SMT 封裝:Reel
V321HG34 功能描述:壓敏電阻 HIGH ENERGY PCB USE RoHS:否 制造商:EPCOS 產(chǎn)品:MLV 電壓額定值 DC:22 V 電壓額定值 AC:17 V 鉗位電壓:50 V 直徑: 峰值浪涌電流:30 A 浪涌能量額定值:75 mJ 電容:74.2 pF 工作溫度范圍:- 55 C to + 125 C 安裝:SMD/SMT 封裝:Reel
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