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參數(shù)資料
| 型號(hào)： | SL05T1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | 300 Watt, SOT-23 Low Capacitance TVS for High Speed Line Protections |
| 中文描述： | 300 W, UNIDIRECTIONAL, SILICON, TVS DIODE, TO-236 |
| 封裝： | PLASTIC, CASE 318-08, 3 PIN |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 53K |
| 代理商： | SL05T1 |
SL05T1 Series
http://onsemi.com
5
Applications Background
This new family of TVS devices (SL05T1 series) are
designed to protect sensitive electronics such as
communications systems, computers, and computer
peripherals against damage due to ESD conditions or
transient voltage conditions. Because of their low
capacitance value (less than 5 pF), they can be used in high
speed I/O data lines. Low capacitance is achieved by
integrating a compensating diode in series with the TVS
which is basically based in the below theoretical principle:
Capacitance in parallel: CT = C1+C2+....+Cn
Capacitance in series: 1/CT = (1/C1)+(1/C2)+....+(1/Cn)
The Figure 5 shows the integrated solution of the SL05T1
series device:
Figure 5.
COMPENSATING
DIODE
TVS
In the case that an over–voltage condition occurs in the I/O
line protected by the SL05T1 series device, the TVS is
reversed–biased while the compensation diode is
forward–biased so the resulting current due to the transient
voltage is drained to ground.
If protection in both polarities is required, an additional
device is connected in inverse–parallel with reference to the
first one, the Figure 6 illustrates the inverse–parallel
connection for bi–directional or unidirectional lines:
Figure 6.
3
2
1
3
2
1
An alternative solution to protect unidirectional lines, is to
connect a fast switching steering diode in parallel with the
SL05T1 series device. When the steering diode is
forward–biased, the TVS will avalanche and conduct in
reverse direction. It is important to note that by adding a
steering diode, the effective capacitance in the circuit will be
increased, therefore the impact of adding a steering diode
must be taken in consideration to establish whether the
incremental capacitance will affect the circuit functionality
or not. The Figure 7 shows the connection between the
steering diode and the SL05T1 series device:
Figure 7.
STEERING DIODE
SL05T1 DEVICE
Another typical application in which the SL05T1 series
device can be utilized, is to protect multiple I/O lines. The
protection in each of the I/O lines is achieved by connecting
two devices in inverse–parallel. The Figure 8 illustrates how
multiple I/O line protection is achieved:
Figure 8.
OUTPUT
INPUT
For optimizing the protection, it is recommended to use ground planes and short path lengths to minimize the PCB’s ground inductance.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SL05T1_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:300 Watt, SOT-23 Low Capacitance TVS for High Speed Line Protections |
| SL05T1G | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 5V Single Line Low Capacitance TVS RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
| SL05T3 | 功能描述:TVS 二極管 - 瞬態(tài)電壓抑制器 5V Single Line RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
| SL05TC | 制造商:Semtech Corporation 功能描述: |
| SL05TG | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Low Capacitance TVS Diode For High Speed Data Interfaces |
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