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SRV05-4A
PROTECTION PRODUCTS
Applications Information (continued)
helps to mitigate the effects of parasitic inductance in
the power supply connection. During an ESD event,
the current will be directed through the integrated TVS
diode to ground. The maximum voltage seen by the
protected IC due to this path will be the clamping
voltage of the device.
Video Interface Protection
Video interfaces are susceptible to transient voltages
resulting from electrostatic discharge (ESD) and “hot
plugging” cables. If left unprotected, the video
interface IC may be damaged or even destroyed.
Protecting a high-speed video port presents some
unique challenges. First, any added protection device
must have extremely low capacitance and low leakage
current so that the integrity of the video signal is not
compromised. Second, the protection component
must be able to absorb high voltage transients without
damage or degradation. As a minimum, the device
should be rated to handle ESD voltages per IEC
61000-4-2, level 4 (±15kV air, ±8kV contact). The
clamping voltage of the device (when conducting high
current ESD pulses) must be sufficiently low enough to
protect the sensitive CMOS IC. If the clamping voltage
is too high, the “protected” device may latch-up or be
destroyed. Finally, the device must take up a relatively
small amount of board space, particularly in portable
applications such as notebooks and handhelds. The
SRV05-4A is designed to meet or exceed all of the
above criteria. A typical video interface protection
circuit is shown in Figure 4. All exposed lines are
protected including R, G, B, H-Sync, V-Sync , and the ID
lines for plug and play monitors.
Universal Serial Bus ESD Protection
The SRV05-4A may also be used to protect the USB
ports on monitors, computers, peripherals or portable
systems. Each device will protect up to two USB ports
(Figure 5). When the voltage on the data lines exceed
the bus voltage (plus one diode drop), the internal
rectifiers are forward biased conducting the transient
current away from the protected controller chip. The
TVS diode directs the surge to ground. The TVS diode
also acts to suppress ESD strikes directly on the
voltage bus. Thus, both power and data pins are
protected with a single device.
Figure 4 - Video Interface Protection
SRV05-4A
Figure 5 - Dual USB Port Protection
SRV05-4A
Figure 6 - SIM Port
? 2010 Semtech Corp.
7
www.semtech.com
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相关代理商/技术参数
SRV05-4ATCT
制造商:Semtech Corporation 功能描述:ESD Suppressor Diode Arrays 15KV 6-Pin SOT-23 T/R 制造商:Semtech Corporation 功能描述:TVS DIODE 5V 4CH BI SOT23-6 制造商:Semtech Corporation 功能描述:SRV05-4A Series 6 V 5 pF Uni-Directional TVS Diode Array - SOT-23-6L 制造商:SEMTECH 功能描述:LEAD FREE ESD PART
SRV05-4ATR
功能描述:TVS DIODE 5VWM 17.5VC SOT23 制造商:smc diode solutions 系列:- 包装:剪切带（CT） 零件状态:有效 类型:转向装置（轨至轨） 单向通道:- 双向通道:4 电压 - 反向关态（典型值）:5V（最大） 电压 - 击穿（最小值）:6V 电压 - 箝位（最大值）@ Ipp:17.5V 电流 - 峰值脉冲（10/1000μs）:5A（8/20μs） 功率 - 峰值脉冲:- 电源线路保护:是 应用:以太网 不同频率时的电容:3.2pF @ 1MHz 工作温度:-55°C ~ 125°C（TJ） 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商器件封装:SOT-23-6 标准包装:1
SRV05-4HTG
功能描述:TVS二极管阵列 6V 0.1uA 20kV ESD Contact
RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
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SRV05-4L_13
制造商:MCC 制造商全称:Micro Commercial Components 功能描述:5 Volts ESD Protection Device Low clamping voltage
SRV05-4LC
制造商:PROTEC 制造商全称:Protek Devices 功能描述:ultra low capacitance steering diode/tvs array
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制造商:PROTEC 制造商全称:Protek Devices 功能描述:ULTRA LOW CAPACITANCE STEERING DIODE/TVS ARRAY
SRV05-4L-TP
功能描述:ESD 抑制器 5V, 2.0uA 5V, 2.0uA
RoHS:否 制造商:STMicroelectronics 通道:8 Channels 击穿电压:8 V 电容:45 pF 端接类型:SMD/SMT 封装 / 箱体:uQFN-16 功率耗散 Pd: 工作温度范围:- 40 C to + 85 C