贴片钽电容全称是钽电解电容,也属于电解电容的一种,因为应用金属钽做介质,不需要像一般电解电容那样应用电解液,此外,钽电容不需像一般电解电容那样应用镀了铝膜的电容纸烧制,以是自身简直没有电感,但同时也限定了它的容量。另外,钽电容外部没有电解液,很适合在低温下事情。 钽电容的特点是寿命长、耐高温、准确度高、滤高频改波功能极好,无非容量较小、价钱也比铝电容贵,并且耐电压及电流才能相对于较弱。它被应用于大容量滤波的处所,像CPU插槽邻近就能看到钽电容的身影,多同陶瓷电容,电解电容合营应用或是应用于电压、电流不大的处所。好处1.体积小2.应用温度局限宽,耐高温3.寿命长,绝缘电阻高,漏电流小4.容量偏差小5.等效串连电阻小(ESR),高频性能好瑕玷1.耐电压不够高2.电流小3.价钱高贴片钽电容的全称是钽电解电容,也属于电解电容的一种,因为应用金属钽氧化物做介质,不需要像一般电解电容那样应用电解液,此外,钽电容不像一般电解电容那样应用镀了铝膜的电容纸烧制,以是自身简直没有电感,但同时也限定了它的容量。另外,贴片钽电容外部没有电解液,很适合在低温下事情。尽管贴片钽电容的特点是寿命长、耐高温、准确度高、滤高频纹波功能极好,无非容量较小、价钱也比铝电容贵,并且耐电压及电流才能相对于较弱。致使贴片钽电解电容爆炸的缘故原由大致分为,正负极倒置应用和电路中交换纹波太高而致使的爆炸,和在应用电压适宜的情形请,电路峰值输入电流过大致使贴片电容爆炸,这两种情形。有些客户在不懂耐压的情况下就会轻易造成贴片钽电解电容耐压击穿,轻则烧焦重则爆裂。贴片铝电解电容铝电解电容是由铝圆筒做负极,内里装有液体电解质,拔出一片曲折的铝带做正极制成。还需要经由直流电压处置,使正极片上构成一层氧化膜做介质。它的特点是容量大,然则漏电大,稳定性差,有正负极性,适合用于电源滤波或许低频电路中。应用的时间,正负极不要接反。电解电容器特色一:单元体积的电容量非常大,比其它品种的电容大几十到数百倍。电解电容器特色二:额外的容量能够做到非常大,能够随意马虎做到几万μf以至几f(但不克不及和双电层电容比)。电解电容器特色三:价钱比其它品种拥有压倒性上风,由于电解电容的构成资料都是一般的工业资料,比方铝等等。创造铝电解电容的设置装备摆设也都是一般的工业设置装备摆设,能够大规模出产,本钱相对于比较低。贴片钽电容和贴片铝电解电容的差别电解电容器因此电解的要领构成的氧化薄膜作为介质而做成的电容器。钽电容器: (经常使用CA标记)钽电解电容是用金属钽作电极、氧化钽作介质的电容器。特点是:化学稳定性高,额外耐压高,耐高温性能好,机器强度高,体积小。经常使用CA标记,其容量从0.47uF到1000uF,额外耐压主要有6.3V、10V、16V、63V几种。功能远优于铝电解电容,但价钱比拟贵。钽电解电容器是一种用金属钽(Ta)作为阳极资料而制成的,按阳极布局的分歧可分为箔式和钽烧粉结式两种,在钽粉烧结式钽电容中,又因事情电解质分歧,分为固体电解质的钽电容和非固体电解质的钽电容。此中,固体钽电解电容器用量大,如CA型、CA42型等。钽电解电容器的外壳上都有CA标志,但在电路中的标记与别的电解电容器标记倒是同样的。与铝电解电容相比,钽电解电容在串连电阻、感抗、对温度的稳定性等方面都有显然的上风。然则它的事情电压较低。铝电解电容器:(经常使用CL 标记)铝电解电容的容体比较大,串连电阻较大,感抗较大,对温度敏感。它适用于温度变迁不大、事情频次不高(不高于25kHz)的场所,可用于低频滤波(在高频率得时间电解电容的并联滤波结果较低频差),铝电解电容拥有极性,装置时必需保障精确的极性,不然有爆炸的风险。铝电解电容器的额外电压的1.3倍作为电容器的浪涌电压,事情电压高于160V时,是额外事情电压 50V作为浪涌电压,这是出产厂家保障的电压,能够同意在短时间内承受此电压。电容器处于浪涌电压时,电流会很大,一般为失常情形的10~15倍,假如时候过长,会爆开。以是普通选用铝电容器应当把电压选得稍高些,实践事情电压为标称电压的70~ 80%为宜。铝电解电容器CL型特色:体积小、寿命长、105℃2000小时,宽温度、高可靠性。应用温度局限:-55℃至 105℃额外电压:6.3-100VDC 160-400VDC标称电容量局限:0.1-15000UF标称电容量同意误差:±20%(25℃,120HZ)消耗正切值:容量大于1000UF者,每增添1000UF,其消耗正切值增添0.02温度特点:容量大于1000UF者,每增添1000UF,阻抗比增添1耐久性: 105℃加带纹波电流的额外电压2000小时,复原16小时后:((≤Φ8:1000HR)电容量变迁率:±20%初始测量值之内漏电流:≤初始规定值消耗角正切值:≤200%初始规定值贴片钽电容和贴片铝电解电容的差别贴片电容与电解电容差别1、贴片电容的全称为多层片式陶瓷电容器,是大部分能够实施贴片封装的电容的统称,而电解电容则是电容性子分类的一种。2、贴片电容分为无极性电容和有极性电容两类,有极性电容普通称为电解电容无非有些电解电容不适合贴片封装,如节能灯用的铝电解电容。3、贴片电容普通体积比较小,容量小,精度比较高,而电解电容体积、容量比较大品种多。贴片是PCBA加工行业里的一种加工体式格局,是指在元器件经由涂敷而后经由贴片机举行贴片装置举行回流焊接进程普通贴片电容的体积比插件的小,更能顺应时期进展。贴片电容用处1、贴片电容在中高频有相当大的作为,其体积小,耐压高,高频谐振点的ESR异常低(数个平日用于中高频(100k-数百M)滤波应用起来好是各个谐振频段都选用比方102,103,104(即1nF,10nF,100nF)等级容量的陶瓷电容并联应用。低中频方面要滤波,首先要思量电解电容需求注重处所是大多数的电解电容都有极性,即正负极千万不要倒置,哪怕一般万用表丈量时极性失慎搭反,都要将该电容放弃。2、陶瓷电容瑕玷是随温度变迁功能变迁很大(除了I类介质,但I类介质容量做不大比方X7R,X5R额外温度范围内容量变迁±15%,至于Z5U,Y5V介质的容量变迁能达到-82%。电解电容平日拥有温度特点好(除了液态铝电解以外无非固态铝电解在这方面有了极大地改良然则耐压今朝来讲很少跨越100V频次局限宽,直流偏压特点良好,等效串连电阻(ESR稳固,耐纹波电流特色。3、陶瓷电容跟着加在下面的直流偏压产生容量变迁,同时ESR额外频段内也有激烈颤动,在这方面,陶瓷电容和钽电容以及固态铝电解是没办法比的。电解电容需求注重只需接纳电解质作为阴极的电容都是电解电容今朝使用比拟普遍的是铝电解,钽电解,铌电解,还要 在一个电路板构成的电路需求思量价钱功能方面要素分歧范例的电容分歧功能上风不论贴片仍是插件的电容抉择适宜本人的才是好的。
Key word:电容
Release time:2022-01-24 00:00 reading:2544 Continue reading>>
The latest IDC Worldwide Semiannual Robotics and Drones Spending Guide forecasts Asia Pacific excluding Japan (APEJ) spending on robotics (including drones) and associated services to reach USD 129.4 billion by 2022, essentially three times the spending in 2018, with a five-year CAGR of 25.2% during 2017-2022. APEJ tops with the largest market share for robotics applications followed by the United States and Japan. Both are expected to record for more than 61.6% of the world’s entire robotics market in 2022."To survive the escalating competition, APEJ manufacturing organizations surveyed by IDC in 2018 are putting robotics as their top priority for technology investment," said Dr. Jing Bing Zhang, Research Director for Worldwide Robotics at IDC. “While the uncertainty of the trade war between the United States and China is likely to dampen the market growth in the near term, we expect the growth trend to pick up from 2020 onward.”Discrete and process manufacturing are the dominant industries in robotics (including drones) spending, which turns over 58.1% of the overall spend in APEJ in 2019. Largely, welding and assembling use cases in discrete manufacturing, whilst pick and pack, and bottling use cases in process manufacturing are driving the robotics spend in 2019. However, customer deliveries, vegetable seeding and planting are the drone use cases which we expect to grow at fast pace with a five-year CAGR 126.4% and CAGR 112.1% respectively over the forecast period (2017-22).“There has been an intensive wave of industrial automation for which robotics and drones provide a major base; hence attracting investments with each passing year. Under Robotics, despite Manufacturing being a dominant industry in this area, investments will continue to increase in resource industry, retail, construction, among others,“ said Swati Chaturvedi, Senior Market Analyst at IDC.“On the other hand, drones, which are majorly a consumer-oriented technology, are gaining momentum in its industrial usage by enterprises and governments alike for tasks as mundane as filmmaking and inspection or as complex as agricultural uses, mining operations assistance, and insurance assessment.”From a technology perspective, hardware purchases related spending on robotics systems (including drones) in APEJ, which includes industrial, service and consumer robots and after-market hardware, is forecast to grow to $81.0 billion in 2022.China accounts largest market share in the Asia Pacific robotics (including drones) market. Its spending on robotics is expected to reach $80.5 billion, representing 62.2% of APEJ region's total spending in 2022.
Key word:Robot
Release time:2019-01-25 00:00 reading:2705 Continue reading>>
Chipmaker Texas Instruments posted its first year-over-year decline in quarterly sales in more than two years amid what company executives characterized as semiconductor cyclicality and weaker demand in China.“We believe that after 10 quarters of year-on-year growth, the weakness we are seeing is primarily due to the semiconductor cycle,” said Rafael Lizardi, TI’s chief financial officer, in a post-earnings conference call with analysts. “In addition, the macroenvironment — including uncertainty caused by trade tensions — could impact the depth and duration of this cycle.”Dave Pahl, vice president and head of investor relations, said that demand in China was weaker than in other regions of the world. “We are seeing signs from our customers and the channel that this weakness is primarily from increased caution due to trade tensions,” Pahl said. “We assume that this weakness is a combination of lower local end demand, as well as reduced exports, but we do not have visibility to distinguish between the two.”Trade tensions between the U.S. and China have been escalating for over a year, with each country imposing tariffs on products exported by the other beginning last March. However, prior to TI’s quarterly report Wednesday, chip companies have generally not reported any major effects of the trade war.TI (Dallas) reported sales of $3.72 billion for the fourth quarter of 2018, down 1% compared to the fourth quarter of 2017. The company reported a net income for the quarter of $1.24 billion, up 260% from the fourth quarter of 2017, when non-cash charges related to tax law changes adversely affected TI’s profit.Fourth-quarter sales came in slightly below consensus analysts’ expectations of $3.75 billion. Earnings per share of $1.27 exceeded consensus analysts’ expectations of $1.24 per share.For the full-year 2018, TI reported sales of $15.8 billion, up 5% compared to 2017. The company reported a net income for the year of $5.6 billion, up 51% compared to 2017.TI said that it expects sales for the first quarter of this year to be between $3.34 billion and $3.62 billion, in line with analysts’ expectations.
Key word:TI
Release time:2019-01-25 00:00 reading:2804 Continue reading>>
According to the latest research by EnergyTrend, a division of TrendForce, the market of new energy vehicle will continue to grow steadily, driving the demand for xEV batteries, despite the slowdown in global automotive market since 2018. The global demand for lithium-ion batteries used in new energy passenger cars is estimated to reach 155GWh in 2019, a growth of 63% from 95GWh in 2018.According to Duff Lu, senior research manager of EnergyTrend, China has become the world's fastest-growing market for new energy vehicles driven by the government’s subsidies and supporting policies. After a rapid growth in 1H18, the shipments of new energy cars in China slowed down in 2H18, moderating the demand in the xEV battery industry as well. However, with increasing penetration of new energy vehicles, the demand for lithium-ion batteries used in new energy passenger cars in China will grow to 54GWh in 2019, a growth of nearly 80% from 30GWh in 2018.In terms of supply, the production capacity of xEV battery in China has surpassed 134GWh by the end of 2018, and has a chance to reach 164GWh in 2019. Amid the oversupply and phasing out of subsidies from the Chinese government, the industry has been faced with a reshuffle since the second half of 2018. Major manufacturers have grown stronger at the expense of the demise of smaller companies. Leading players like Contemporary Amperex Technology (CATL) and BYD continue to expand, while less competitive ones who rely too much on regional markets, such as OptimumNano Energy, may have to exit the market during the market reshuffle.EnergyTrend expects that, with new capacity entering operation in 2019, the xEV battery industry will become more concentrated. The top five battery manufacturers would continue to grow and become the major suppliers. Subsidies from the Chinese government will be phased out by 2020, but before that, the industry will still depend on the subsidies to cover their R&D costs for advanced battery technologies. Manufacturers need to continue the development of high energy density solutions, building up competitiveness, before the electric vehicle market enters the maturity stage.
Key word:Market trend
Release time:2019-01-25 00:00 reading:3077 Continue reading>>
According to the latest report by TrendForce - Breakdown Analysis of China’s Semiconductor Industry, the outlook for China’s semiconductor industry has been tampered since the second half of 2018 due to pessimistic economy worldwide and uncertainties brought by the China-U.S. trade war, although the industry managed to reach a total revenue of over 600 billion RMB in 2018. Looking ahead to 2019, the revenue of China's semiconductor industry is expected to reach RMB 729.8 billion, but the annual growth rate would slow down to 16.20%, the lowest in the past five years.According to Jeter Teo, Research Director at TrendForce, there would be several challenges for China's semiconductor industry in the coming year, including the global economic slowdown, the overall weak demand, the negative growth in global smartphone production volume, as well as the continued trade conflicts between China and the United States.However, as the Chinese government continues to seek self-sufficiency of chips and aims at reducing its dependence on foreign companies, the domestic semiconductor industry will keep growing. On the other hand, new applications will trigger increasing demand for semiconductors, driven by emerging technologies like AI, 5G, autonomous driving, electric vehicles, CIS, biometric recognition, Internet of Things, and edge computing.It is worth noting that, recent years have seen the rise of China's domestic IC design industry, which has played a key role in leading the development of China's semiconductor industry. The industrial structure has continued to be optimized as well. For 2019, the sector of IC design is expected to account for 40.62% of China's semiconductor industry, while IC manufacturing would account for 28.68%, IC testing and packaging would take about 30.7%.On the other hand, TrendForce’s data show that key sectors of the semiconductor industry are expected to register continued growth in revenue, with the growth rate of IC manufacturing reaching 18.58%, higher than 17.86% of IC design and 12% of IC testing and packaging. More than 10 new fabs for 12-inch wafer will enter production in China in 2019, while some 8-inch wafer fabs and the power semiconductor sector anticipate production expansion.
Key word:Market trend
Release time:2019-01-25 00:00 reading:2794 Continue reading>>
Global shipments of large thin-film transistor (TFT) liquid crystal display (LCD) panels rose again in 2018 despite concerns of over-supply in the market. In particular, area shipments increased by 10.6 percent to 197.9 million square metres compared to the previous year, driven by TV and monitor panels, according to IHS Markit.Fierce price competition in large 65 and 75-inch display panels was ignited as Chinese panel maker BOE started the mass production of the panels in 2018 at its B9 10.5-generation facility. “With BOE operating the 10.5-generation line, panel makers have become more aggressive on pricing since early 2018 to digest their capacity,” said Robin Wu, principal analyst at IHS. “Large panels are still more profitable than smaller ones.” Rising demand for gaming-PC and professional-purpose monitors boosted shipments of high-end, large panels. “Some panel makers have allocated more monitor panels to the fab, replacing existing TV panels, to make up for poor performance of that business,” Wu said.Demand for other applications, which include public, automotive and industrial displays, recorded the highest growth rates of 17.5 percent by area and 28.6 percent by unit. “Panel makers view these applications as a new cash cow that can compensate for the sharp price erosion in main panels for TVs, monitors and notebook PCs,” Wu said.LG Display led the area shipments of large display panels, with a 21 percent share in 2018, followed by BOE (17 percent) and Samsung Display (16 percent). BOE boasted the largest unit-shipment share of 23 percent, followed by LG Display (20 percent) and Innolux (17 percent), according to the Large Area Display Market Tracker by IHS Markit.Large TFT LCD panel shipment growth is expected to continue in 2019. The preliminary forecast for unit shipments of three major products indicates that panel makers will continue to focus on the monitor and notebook PC panel businesses, increasing shipments by 5.3 percent and 6.6 percent, respectively, over the year, while shipments of TV panels are forecast to grow just 2.6 percent.In 2019, three new 10.5-generation fabs – ChinaStar’s T6, BOE’s second fab and Foxconn/Sharp’s Guangzhou line – are expected to start mass production. All of them are assigned to manufacture TV panels, further boosting TV panel supply. “As the TV panel business is predicted to remain tough, panel makers, who enjoyed relatively better outcomes with monitor and notebook PC panels in 2018, will likely focus on the IT panel businesses,” Wu said.
Key word:Market trend
Release time:2019-01-24 00:00 reading:1099 Continue reading>>
Key word:LED
Release time:2019-01-24 00:00 reading:2434 Continue reading>>
Semiconductor units forecast to increase 7% in 2019 with IC units rising 8%, O-S-D units growing 7%.Annual semiconductor unit shipments, including integrated circuits and optoelectronics, sensors, and discrete (O-S-D) devices grew 10% in 2018 and surpassed the one trillion unit mark for the first time, based on data presented in the new, 2019 edition of IC Insights’ McClean Report—A Complete Analysis and Forecast of the Integrated Circuit Industry. As shown in Figure 1, semiconductor unit shipments climbed to 1,068.2 billion units in 2018 and are expected to climb to 1,142.6 billion in 2019, which equates to 7% growth for the year.  Starting in 1978 with 32.6 billion units and going through 2019, the compound annual growth rate for semiconductor units is forecast to be 9.1%, a very impressive growth figure over 40 years, given the cyclical and often volatile nature of the semiconductor industry.Figure 1Over the span of just four years (2004-2007), semiconductor shipments broke through the 400-, 500-, and 600-billion unit levels before the global financial meltdown caused a big decline in semiconductor unit shipments in 2008 and 2009.  Unit growth rebounded sharply with 25% growth in 2010, which saw semiconductor shipments surpass 700 billion devices. Another strong increase in 2017 (12% growth) lifted semiconductor unit shipments beyond the 900-billion level before the one trillion mark was achieved in 2018.The largest annual increase in semiconductor unit growth during the timespan shown was 34% in 1984, and the biggest decline was 19% in 2001 following the dot-com bust.  The global financial meltdown and ensuing recession caused semiconductor shipments to fall in both 2008 and 2009; the only time that the industry experienced consecutive years in which unit shipments declined.  The 25% increase in 2010 was the second-highest growth rate across the time span.The percentage split of total semiconductor shipments is forecast to remain heavily weighted toward O-S-D devices in 2019 (Figure 2).  O-S-D devices are forecast to account for 70% of total semiconductor units compared to 30% for ICs.  This percentage split has remained fairly steady over the years.  In 1980, O-S-D devices accounted for 78% of semiconductor units and ICs represented 22%.  Many of the semiconductor categories forecast to have the strongest unit growth rates in 2019 are those that are essential building-blocks for smartphones, automotive electronics systems, and devices that are used in computing systems essential to artificial intelligence, “big data,” and deep learning applications.Figure 2
Key word:Market trend
Release time:2019-01-24 00:00 reading:2837 Continue reading>>
Perforce Software, a developer of enterprise-grade DevOps-focused software solutions, is to acquire Rogue Wave Software, an independent provider of cross-platform software developer tools and embedded components.The new combination of Perforce and Rogue Wave is intended to deliver a full suite of solutions that will not only improve developer productivity but support DevOps at scale. This is the sixth acquisition by Perforce in the last two years since embarking on an aggressive growth strategy to expand its portfolio across the technology development lifecycle.Terms of the deal are not being disclosed, although the acquisition is expected to close in February of this year.Rogue Wave provides solutions that help enterprises to optimise their software development and build, connect, and secure applications. The company has relationships with more than 5,600 customers across industries including financial services, technology, healthcare, government, entertainment, and manufacturing. Based in Louisville, Colorado, the company has 16 offices throughout the world.“This transformational acquisition further expands our global footprint and broadens our offerings. Rogue Wave’s software suite strengthens Perforce’s existing static code analysis and automated test offerings, and also adds new capabilities in the areas of dynamic code analysis, API management, project visualization, developer productivity, and embedded analytics,” said Mark Ties, Perforce CEO.Perforce continues to build out its DevOps-focused software portfolio that looks to meet the needs of technology development teams that are challenged with multiple dimensions of scale but still must deliver products securely at a rapid pace."Software development is growing increasingly complex, driving the need for platforms and solutions that can help enterprises simplify their applications and shorten cycle times. With continuously evolving customer demands, it has never been more important for enterprises to deliver high-quality products and solutions quickly," said Brian Pierce, Rogue Wave CEO.
Key word:Instant news
Release time:2019-01-23 00:00 reading:1026 Continue reading>>

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