參數(shù)資料
型號(hào)： V321HB34
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)： 3/4頁
文件大小： 179K
代理商： V321HB34
2
V
P
HB34 Varistor Series
Varistor Products
High Energy Industrial
87
www.littelfuse.com
Power Dissipation Ratings
Should transients occur in rapid succession, the average power
dissipation result 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.The operating values must be derated as shown
in Figure 1.
Transient V-I Characteristics Curves
FIGURE 2. PEAK PULSE CURRENT TEST 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
FIGURE 3. CLAMPING VOLTAGE FOR V131HB34 - V751HB34
V
10000
1000
100
CURRENT (A)
V751HB34
V661HB34
V131HB34
V321HB34
V511HB34
V481HB34
V571HB34
T
A
= -55
o
C TO 85
o
C
MAXIMUM CLAMPING VOLTAGE
VARISTOR SIZE 34mm
130 TO 750 V
M(AC)
RATING
V271HB34
V251HB34
V151HB34
V421HB34
-5
-4
1E-3
0.01
0.1
1
10
100
1,000
10,000
100,000
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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
V321ID 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:General Purpose, Input/Output Rail-to-Rail Low Power Operational Amplifiers
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