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參數(shù)資料
| 型號： | V430RA16 |
| 廠商： | Littelfuse, Inc. |
| 元件分類： | 壓敏電阻 |
| 英文描述： | Varistor Products - Low Profile |
| 中文描述： | 壓敏電阻器產品-超薄 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 117K |
| 代理商： | V430RA16 |
140
www.littelfuse.com
Varistor Products
RA Varistor Series
Power Dissipation Ratings
Should transients occur in rapid succession, the average power dissipation
required is simply the energy (watt-seconds) per pulse times the number
of pulses per second.The power so developed must be within the specifi-
cations 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 of
average power dissipation.
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
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
100
90
50
10
O
1
T
T
1
T
2
TIME
P
Low Profile
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 2. PEAK PULSE CURRENT TEST WAVEFORM
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| V430RA16X2749 | 功能描述:壓敏電阻 VARISTOR RA SERIES LEAD FREE RoHS:否 制造商:EPCOS 產品: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 |
| V430RA16X2767 | 制造商:Littelfuse 功能描述:RA Series 369 VDC 275 V RMS 710 V Clamp 4500 A 450 pF Radial Varistor 制造商:LITTELFUSE 功能描述:RA Series 369 VDC 275 V RMS 710 V Clamp 4500 A 450 pF Radial Varistor |
| V430RA22 | 功能描述:壓敏電阻 275V 6500A 900pF RoHS:否 制造商:EPCOS 產品: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 |
| V430RA22X2749 | 功能描述:壓敏電阻 VARISTOR RA SERIES LEAD FREE RoHS:否 制造商:EPCOS 產品: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 |
| V430RA8 | 功能描述:壓敏電阻 275V 1200A 80pF RoHS:否 制造商:EPCOS 產品: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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