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A style number is a construction recipe, not a grade. UL Solutions says it certifies Appliance Wiring Material (AWM) to ANSI/UL 758 in the U.S., and that buyers can choose from more than 7,000 AWM styles defined by material, voltage, temperature, environmental exposure and flame ratings. That scale explains why a drawing names UL wire […]
A soldered joint on stranded wire looks clean on the bench. Then the harness starts moving. Eight months of engine vibration later, the wire cracks right where the solder stopped wicking, and the circuit opens only when the assembly is hot. We’ve chased that one often enough to stop arguing about it (we still keep […]
Look closely at almost any complex printed circuit board (PCB), and you’ll spot a dense row of components marked with a single “0” or “000”. At first glance, it feels like a contradiction. A resistor’s entire job is to restrict current flow. So what is the point of a resistor that offers virtually no resistance? […]
The layout of the power section is far more than just connecting the chip and running the caps over. How close the input and output capacitors sit to the pins, how the ground return runs, how much copper you leave for the switch node, which side you take the feedback sample from — these details […]
Last Wednesday afternoon, I had a technical sync with a customer who builds servers. The board was 16 layers, 3.2 mm thick, main signals at 25G, with a few pairs running 56G. About halfway through, the SI engineer on the other side put the simulation plot on the screen and asked: for these vias that […]
Many engineers, when laying out a board, put all their attention on trace width, stackup, and impedance. But have you ever wondered one thing: why do PCB factories default to giving you 1 oz copper? If you switch to 2 oz, what exactly changes on the board? This isn’t a “thicker is better” parameter contest. […]
A few years ago, a quality incident occurred on the production line, offering a profoundly sobering lesson. A batch of PCBs with 0.4mm-pitch QFP components appeared normal during visual inspection immediately after passing through the stencil printer, yet two hours later, they all failed functional testing. Subsequent teardown analysis revealed that the component leads were […]
Thinking back, we’ve been burned before. Back in 2012 our shop took an overseas order; we asked the customer what their requirements were, and in the end we shipped the PCBA over, and the customer came back holding the IPC-A-610 standard telling us a third of the solder joints failed. Was it that our capability […]
DYC Electronic es una empresa profesional de I+D y producción, especializada en la producción de PCBA, SMT, plugins, postsoldadura, pruebas, ensamblaje de productos, producción de cables y conectores, así como en el procesamiento integral de decodificadores de red, tránsito ferroviario, comunicación, electrónica del automóvil, inteligencia energética, automatización industrial, médica, financiera, seguridad y hogar inteligente.
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