PMEG4010CEJ Schottky Diode_GRM32ER71H106MA12L Introduction

. Only three companies from the 1995 list remain intact on the 2019 Rank-List: STMicroelectronics (ST), Texas Instruments (TI) and Analog Devices. Several other companies have "makeovers" or have disappeared from the top ten.

However, Intel raised its forecast in line with the upbeat forecast of its larger rival TSMC. . The company expects strong sales growth in the quarter, driven by strong demand for smartphones, high-performance PCs and cars.

PMEG4010CEJ Schottky diode_GRM32ER71H106MA12L

ISL6617AFRZ-T Other ICs

TPS61230ARNSR TPS613221ADBVR TPS613221ADBVT LM321LVIDBVR TPS562201DDCR.

TPS563209DDCR TPS563209DDCT TS3USB221RSER LM339APWR MAX3232IPWR.

So, does this mean that 150mm wafers are gradually withdrawing from the stage of history? The answer is no, there is still a huge market space for 150mm wafers. A large number of 150mm fabs in the industry were closed, and more and more 300mm fabs were launched and gradually achieved mass production.

. Lithography machine manufacturer ASML announced its second-quarter 2021 financial report on the 21st. The company's second-quarter revenue was 4.02 billion euros (about 4.7 billion U.S. dollars), a year-on-year increase of 22%, but less than analysts expected 4.08 billion euros; Net profit was 1.03 billion euros, up 38% year-on-year, slightly higher than the expected 1.02 billion euros. Chip industry-related companies represented by the Netherlands ASML and Texas Instruments in the United States released performance information on the 21st. Due to the lower than market expectations, the company's stock price fell accordingly.

PMEG4010CEJ Schottky diode_GRM32ER71H106MA12L

TPS54394PWPR

Texas Instruments management declined to say whether they believe demand is peaking or whether the current level of growth is sustainable. Like other chipmakers, Texas Instruments has had multiple quarters of double-digit revenue growth, with revenue rising 41 percent to $4.58 billion last quarter, beating analysts' estimates of $4.36 billion. .

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When asked why nobody in the industry has built something like a BAW resonator, Upton said, "It's very difficult to develop. But it's not easy to convert electrical energy into mechanical acoustics while keeping the signal stable and robust within a clean clock." TI has been involved in MEMS research for many years.

The propagation speed of sound waves in solids is ~5000m/s, which means that the acoustic impedance of solids is about 105 times that of air, so 99.995% of the sound wave energy will be reflected back at the boundary between the solid and the air, which is the same as the original wave (incident wave). together to form a standing wave. In order to keep the acoustic wave in the piezoelectric film to oscillate, there must be sufficient isolation between the oscillating structure and the external environment to obtain a small loss and a large Q value. On the other side of the oscillating structure, the acoustic impedance of the piezoelectric material is not much different from that of other substrates (such as Si), so the piezoelectric layer cannot be deposited directly on the Si substrate. .

PMEG4010CEJ Schottky diode_GRM32ER71H106MA12L

Radio waves, microwaves, visible light, X-rays, and gamma rays are all electromagnetic waves. Physically, waves are mainly divided into two types, one is electromagnetic wave, which does not require any medium, but propagates through the periodic oscillation of the electric and magnetic fields generated by the initially charged particles. It can also propagate in a vacuum.

Only the ladder type and lattice type are briefly introduced here. The BAW filter can connect multiple resonators according to a certain topology. There are many types of BAW filters, including ladder type filter, lattice type filter, stacked crystal filter and coupled resonator filter.

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