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SurgeSwitch
The SurgeSwitch product line protects interfaces from electrostatic discharge (ESD) and electrical overstress (EOS) events with its superior clamping and temperature characteristics. SurgeSwitch delivers nearly constant clamping voltage across the rated peak pulse current range and remains stable over the operating temperature range.
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| 总部分: | 包 | 包大小 | 配置类型 | 行数 | VRWM Max (v) | Cj (typp) (pF) | IPP (A)在8/20µsec | VClamp (V) at Ipp 8/20µsec | VBR(最低)(V) | IEC61000-4-2 (ESD) contact discharge | IEC61000-4-2 (ESD) air discharge |
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概述 with Principal Solutions Architect,…
Today's automobile stands at the forefront of technological advancement with a vast array of sophisticated functions such as self-driving capability, GPS导航, 通过蓝牙免提电话操作，Apple CarPlay进一步增强TM 和Android AutoTM 以及许多先进的功能，提高安全性和舒适性. 汽车的功能越多，使用的半导体元件就越多. The semiconductor components employed in automotive applications must satisfy the qualification criteria outlined in AEC-Q standards. This international standard specifies the qualifications necessary for packaged integrated circuits and discrete devices utilized in in-vehicle electronic systems. 由于高速信号传输使用的接口越来越多, 越来越多的半导体元件被添加到汽车系统中.
物联网的应用与ESD防护的重要性
物联网(IoT)是由嵌入传感器的物理设备组成的网络, 软件, 以及其他通过互联网与其他设备和系统连接和交换数据的技术. 它与云服务器或网关共享数据以进行分析并采取相应的操作(图1)。. One noteworthy application of IoT is in 农业. 灌溉的数量和时间是根据收集土壤水分信息的物联网传感器决定的, 营养物质, 肥料量, 天气信息帮助农民做出明智的决定，防止资源浪费. 物联网应用在制造业和制造业也变得非常流行 工业自动化, from factory floors to department stores, tracking machine performance, 测量产品质量, and asset tracking to real-time location systems. 智能家居自动化基于物联网的系统使我们的家庭更安全，更易于维护.
Protecting IoT Devices from Electrostatic…
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The Importance of Keyboard ESD Protection
Since the dawn of computers, 键盘已经成为人与机器之间的主要通信机制. 多年来, many technologies and interfaces have changed, 但键盘在形式和功能上几乎没有改变. Recently, I bought an exclusive wireless keyboard. 最初，它通过蓝牙与计算机通信，没有任何问题. However, after a month or so, it suddenly stopped. When I opened the internal circuit, 我很惊讶，钥匙没有静电放电(ESD)保护. Any electronic device's keypad, 侧键或按钮由于经常与人接触，容易受到静电放电的影响. 在键盘/小键盘/侧键中添加ESD保护装置，可以避免我的键盘出现故障等灾难性情况. 让我们讨论一下ESD，以及如何保护我们的电子设备免受其害.
Protecting Keyboards from Electrostatic Discharge…
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无论你是在体育场的大屏幕上观看棒球比赛的实况回放, 在大屏幕电视上看电影或在笔记本电脑上播放视频, 高质量的视听(AV)体验总是值得期待的. Ultra-High-Definition Serial Digital 接口 (UHD-SDI) and High-Definition Multimedia 接口 (HDMI) are two standards for digital AV transmission. UHD-SDI标准化了同轴或光纤电缆上未压缩和未加密的数字AV信号的传输. HDMI是一种用于传输高清数据的数字接口, 高速数字多轨音频和未压缩视频信号从hdmi兼容的来源AV显示器. 尽管它们都可以将超高清AV信号从信号源传输到显示器, HDMI更倾向于连接电脑等消费电子产品, 游戏控制台, 蓝光/ DVD播放器, 电视, 投影仪, etc. UHD-SDI is preferred for high-end applications such as professional indoor/outdoor video production and television broadcasts because it sup港口 long-range transmission and a rugged connection with the help of a physical lock mechanism at each end of the cable. UHD-SDI同轴电缆可以传输信号高达300英尺, 而HDMI电缆即使在50英尺内也会受到过度信号衰减的困扰. 这两个接口可以通过HDMI-SDI或SDI-HDMI转换器一起使用. 例如, 如图1所示, an HDMI display would be used for confidence monitoring of an SDI stream to avoid the need to use specially calibrated SDI-specific displays.
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不久前, 我唯一的健身追踪器是口袋里的计步器，用来测量我每天的步数. Things have since changed very quickly. 我现在手腕上有一块智能手表，可以记录我的日常活动, 包括已完成的步骤, 距离覆盖, 卡路里烧毁, 心率, 呼吸模式. I also receive alerts for messages, 接电话, listen to my favorite podcast, and check the weather via my smartwatch. 这些都是除了看到一天的准确时间. Due to all these innovative features, 佩戴智能手表并将其用作健身追踪器是全球关注健康人群的趋势. While these wearables help people remain fit, extra care needs to be taken by the manufacturers to protect these wearables from electrical overstress (EOS) and electrostatic discharge (ESD) generated from the body of the person wearing these devices.
Protecting the Health of Fitness Trackers
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HotSwitch® is a new product line of devices from S提出 with an integrated load switch or eFuse that protects electronics systems against typical electrical transients and steady-state fault conditions. 首先，HotSwitch设备根据需要打开或关闭流向电源轨的电流. 它检测电涌，并通过断开负载与电源的连接来保护下游子系统. 同时, S提出的HotSwitch产品组合中的器件提供了增强的屏蔽浪涌电流, 过电压, 在电压下, 反向电流, 短路, and over-temperature faults. 图1显示了HotSwitch设备是如何保护系统的.
HotSwitch® – The eFuse For Your Next Design
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美国.S. Department of Transportation (USDOT) and the National Highway Traffic Safety Administration (NHTSA) have published regulations that require all cars, SUVs, 卡车, 从5月1日开始，面包车将安装后视镜系统, 2018. 事实上, 直到最近, 后视摄像头是许多车型中唯一使用的摄像头，被认为是一项出色的安全功能. 现代汽车在过去几年中有了很大的发展, 采用创新的安全功能，包括盲点检测, 围观的监控, 向前 and 追尾警告、车道保持辅助和自动泊车辅助. 这些功能利用摄像头和传感器，通过仪表板显示器向驾驶员通报汽车和周围环境. 现在，高端车辆中至少有六个摄像头. 汽车里可能有视频显示系统，比如DVD播放器和电视，供乘客使用.
Guarding LVDS Devices in 汽车 Vehicles
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Since its initiation in the early 20th century, the automotive industry has evolved significantly, 采用许多创新, 变化和适应. 现代汽车具有后视镜等复杂功能, a full-featured infotainment system, 智能手机的码头, GPS导航, 蓝牙连接, and several other advanced features. 不仅如此, 最近的一些车型能够自动驾驶, 向前 and rear collision detection, 自动停车. 很容易想象，汽车中使用的电子元件数量正在激增. 同时, 为了给新元件腾出空间，对电子元件小型化的要求变得越来越重要.
The semiconductor industry is producing leadless packages of integrated circuits (ICs) to make room for the enormous number of electronic components and meet modern-day vehicles' safety and reliability requirements. A big challenge is the lack of visibility of the solder joints on the printed circuit boards (PCBs) during the post package assembly process. 连接在包裹下面，从顶部和侧面看不出来. 所以你不能肯定地说，如果IC是充分粘合到PCB或没有. 原始设备制造商(oem)一直在使用x光机来检测不可靠的焊点. It is expensive and time-consuming to do so.
此外, 对于多层板或具有复杂布局和路由程序的板，这种方法尚未被证明有效. Each vehicle PCB has to go through a strict automatic visual inspection (AVI) post assembly to comply with safety and reliability standards. 目标是确保每个电气接头都充分焊接并且连接可靠.
Side-Wettable Flanks for the 汽车 行业
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