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AEC-Q101 Qualified Devices Save Board Space While Offering High Stability for Automotive Applications

Vishay Intertechnology, Inc. introduced a new series of uni/bidirectional 1500 W surface-mount PAR transient voltage suppressors (TVS) in the SMB (DO-214AA) package. To meet the demands of automotive applications, the Vishay General Semiconductor T15BxxA and T15BxxCA series are AEC-Q101 qualified and offer high temperature operation to +185 °C.

Compared to TVS in the SMC (DO-214AB) package, the Automotive Grade devices released today provide a 58 % smaller footprint to save board space and lower system costs. The unidirectional T15BxxA series offers extremely stable breakdown voltages from 12 V to 51 V, while the bidirectional T15BxxCA series provides breakdown voltages from 12V to 100 V. The devices offer excellent clamping capability — 17.0 V to 70.1 V for the T15BxxA and 17.0 V to 137 V for the T15BxxCA — and very fast response times.

The TVS are designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning. Typical applications will include lighting, electro-mechanical brake (EMB), and fuel pump control; 48 V DC/DC converters and inverters; integrated starter generators, BMS, vehicle control units (VCU), and on-board chargers; and telematics control units (TCU) for audio, electronic stability control (ESC), and radar sensors.

The devices meet MSL level 1 standards per J-STD-020 and are RoHS-compliant and halogen-free.

The post Vishay Intertechnology Uni/Bidirectional 1500 W PAR TVS Solutions Offer High Temperature Operation to +185 °C in SMB (DO-214AA) Package appeared first on ELE Times.

I made this dummy PCB on my 3D printer before submitting a front panel board to the PCB manufacturer. Turned out to be a nice method to avoid part alignment mishaps. The accuracy was in fact down to about 0.1 mm 💪 submitted by /u/Party-Butterfly-4857 [link] [comments]

I had to add a bypass set of capacitors at the voltage divider that was feeding the + input of the opamp. I also had to add a low - pass filter on the signal input, especially if I attempted to use my phone as audio input it had a lot of noise on it and apparently the phone expects a somewhat low impedance or it will get even noiser. I then also had to put a capacitor / resistor network across the feedback resistor to enforce lowering the gain at higher frequencies which prevented the opamp from oscillating during large signal swings. And now it is fully functional, mounted to a heatsink. Puts out about 14watts into 4 ohms at 30volts supply. Will do almost 20 watts into 2ohm load. I will be switching the potentiometer out for a smaller PCB style one and also integrating the input filter directly on the board soon. submitted by /u/Perfect-Campaign9551 [link] [comments]

In this article, we'll investigate how varying the amplitude and frequency of the modulating tone impacts the bandwidth of FM signals. We'll also compare the modulation index in AM and FM schemes.

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This is a pico 2 clone I made called PicoPlus. It's a drop in replacement* of the Raspberry Pi Pico 2. It has a WS2812B neopixel, 128MB SPI Flash on SPI0, 64MB PSRAM on SPI1, and a user button on GP24. I spent a bunch of time getting all the components to fit together, and reflowing this board myself. GitHub *GP0 is used as the chip select for the PSRAM chip, but can be disabled by cutting a solder jumper on the back submitted by /u/Badbird_5907 [link] [comments]

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InnoScience (Suzhou) Technology Holding Co Ltd — which manufactures gallium nitride on silicon (GaN) power chips on 8” silicon wafers — says that, with large AI models and high-performance computing placing higher demands on power supply systems, it is collaborating with NVIDIA of Santa Clara, CA, USA to jointly promote the large-scale implementation of an 800VDC power architecture in AI data centers...

A new organic electrochemical transistor-based device offers a needle-free solution for managing bipolar disorder.

There was an engineer I met who gave me a laptop with Altium 09 on it and told me that if I could get him the gerbers for a fun kids' soldering project for the STEM booth, he'd hire me as his EE. He let me know that he wanted silver teeth and spoke about layers and silk screening - his eyes glazed over - but I accepted the challenge, as I had no idea what a Gerber was at this point. I took it on, fumbled through and figured out how to use Altium and TxRex was born! The second pic is 6 months into my Altium experience. Love this stuff! submitted by /u/gotoline10 [link] [comments]

КПІ ім. Ігоря Сікорського і Ericsson: новий рівень співпраці у сфері 5G kpi пт, 08/01/2025 - 18:39

It was a fun project for one day, the idea came from the thought "what circuit can I fit in the one box of matches?" So I did, the boards fit, of course, without the battery. I kind of like this "naked" look of it. submitted by /u/TmxFsd [link] [comments]

Check out this link for On Semiconductor’s datasheet for a line of “Zero-Cross Optocoupled Triac Drivers.”

The ability to zero-cross when turning on AC line voltage to some loads may be advantageous. The following sketch in Figure 1 is a slightly simplified version of one circuit from the above datasheet.

Figure 1 A simplified triac drive arrangement that will turn on AC line voltage to a load.

The zero-crossover behavior of the triac and its driver operates nicely as the control input signal at pin 2 decides if AC is applied to the node or not. However, I had a somewhat different triac control requirement calling for two manually operated pushbuttons, one for turning AC power on and the other for turning AC power off while preserving the zero-crossover feature. Another issue was that at the required load power, the thermal burden to be borne by the controlled triac was much too severe.

The thermal burden on the triac was relieved as follows in Figure 2.

Figure 2 The revised triac drive arrangement with a relay added such that when the pushbutton is pressed, the triac turns on AC to the load using its zero-crossover feature.

A relay was added whose coil was tied in parallel with the load and whose normally open contacts were in parallel with the anode and cathode of the triac.

When the pushbutton was pressed “on,” the triac would turn on AC to the load using its zero-crossover feature and then the relay contacts were closed across the triac. When the relay contacts closed, the load current burden was shifted away from the triac to the relay. The triac only needed to operate through the duration of the relay’s closure time which in the case I was working on, was approximately 50 ms or just a little longer than three cycles of the input AC line voltage.

We had the zero-crossover benefits, and the triac never even got warm.

One normally-open pushbutton for turning on the load’s power was set up to drive the LED at the input of the optocoupler. You can come up with a million ways to accomplish that, so we’ll just leave that discussion aside.

Another normally-closed pushbutton was set up to remove the drive from the relay’s coil. With the first pushbutton assumed to be open and idle at that moment, and since the triac was already off, the second relay’s contacts would open up, and the load power would be turned off.

John Dunn is an electronics consultant and a graduate of The Polytechnic Institute of Brooklyn (BSEE) and of New York University (MSEE).

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The post Triac and relay combination appeared first on EDN.

Infineon Technologies AG of Munich, Germany says that the Munich District Court (Landgericht München I) has ruled in favor of it in a first instance patent infringement case alleging the unauthorized use of its patented gallium nitride (GaN) technologies by InnoScience (Suzhou) Technology Holding Co Ltd, which manufactures GaN-on-Si power chips on 8” silicon wafers...

Gallium nitride (GaN) power IC and silicon carbide (SiC) technology firm Navitas Semiconductor Corp of Torrance, CA, USA says that its GaNSense Control ICs are to power the next-generation 90W GaN charger of China’s Xiaomi...

India has provisionally retained tariff-free access to the U.S. for select electronics exports—including servers, laptops, and smartphones—due to an ongoing Section 232 national security investigation. While Washington has imposed broad 25% reciprocal duties on most Indian goods starting August 7, 2025, these electronics remain exempt for now, offering India a notable competitive advantage in the U.S. market.

Industry Reaction and Strategic Timing

The U.S. directive imposing tariffs is scheduled to take effect on August 7, 2025. India exports shall, however, remain unaffected for now because Section 232 is under review. Hence, the U.S. continues to facilitate duty-free exports of smartphones, computers, servers, and several other tech goods.

The move has been hailed by the industry organizations and analysts, who also compare that China faces effective duties of up to 30% on similar electronics exports to the U.S, while India (that is alongside Vietnam and Taiwan) continues to enjoy the zero tariffs, thus making their electronics at times 20 percent cheaper to compete with in the U.S. Market.

Increased Exports and Mid-Term Prospects

Electronics exports of India have been on a fast track; from around $8.4 billion in FY19 to $23.6 billion in Electronics exports have been growing rapidly in India: Whereas exports stood at around $8.38 billion in FY19, they touched $23.61 billion in FY23, with mobile-phone exports now accounting for more than half of total exports. Assembling of iPhones in India constitutes a significant piece of the pie.

Most Indian exports will face a 25% tariff starting August 7, 2025, with electronics temporarily exempt under Section 232 review. All Indian exports now face a 25% tariff starting August 7, barring electronic items. The tariff relates to Washington’s concerns concerning Indian trade barriers and India’s ongoing defense and energy ties with Russia.

Experts warn that should the Section 232 exemption be lifted, the Indian electronics exports would face sudden cost pressure, particularly in the American market. Practically, the move may curtail Apple’s plans to scale up India-based production of iPhones and thereby fast-track changes in global supply chains.

Government & Industry Positioning

Top trade officials emphasize that Section 232 continues to be reviewed, keeping India in a temporary window to consolidate export momentum.

The Commerce Ministry reiterated that in the negotiations, it remains firm to protect national interests and whistles down all policy options to defend India’s exporters and MSMEs.

Industry associations such as ICEA stipulate low-duty reciprocal regimes on U.S. imports of electronics to keep both countries competitive U.S. tariffs are currently about 16.5% in India, while those in the U.S. are almost zero.

Conclusion:

India enjoys its present position in electronic exports due to a temporary but crucial tariff exemption. The next two weeks will determine if this carve-out will be Permanent under Section 232, or if Indian tech products will soon be faced with the harsh tariffs. Negotiations for a wider Bilateral Trade Agreement (BTA) could probably lay the ground for a more expanded solution by September 2025, which would highlight concerns for tariff reductions, digital-trade access, and regulatory fairness.

For now, Indian exporters have the advantage of a preferential footing but may have to be nimble enough in the coming months to adapt to the probable changes in U.S. trade policy.

The post India Secures Tariff Exemption for Electronics Exports to U.S. appeared first on ELE Times.