Learn what the 1nF capacitor code 102 means, how to use it in RC snubbers, high-frequency EMI filters, and active filter design, plus C0G vs X7R dielectric guide, package selection, and real part numbers. The 1 nF capacitor occupies a genuinely useful middle ground that often gets overlooked. It’s too small to carry serious decoupling duty […]
Read articleLearn how to choose a capacitor with this complete PCB engineer’s guide 鈥� covering dielectric type, voltage derating, ESR, tolerance, package size, and real design examples. Choosing the wrong capacitor is one of the most expensive mistakes you can make in PCB design 鈥� not because capacitors are expensive, but because the consequences often don’t […]
Read articleThe complete ceramic capacitor guide: MLCC construction, C0G vs X7R vs X5R dielectrics, DC bias derating, failure modes, PCB placement rules, and expert selection tips. If you’ve designed even one PCB, you’ve used a ceramic capacitor. Probably dozens of them. The small rectangular components scattered across nearly every modern circuit board 鈥� those tiny beige […]
Read article吃瓜tv / Engineering reference吃瓜tv / ENGINEERING REFERENCECapacitor units and value converterDifferent notation. The same nominal value.1 碌F = 1,000 nF = 1,000,000 pF. Convert explicit values, compare a small list and preserve the original notation. Equal capacitance alone does not approve a substitute.Try the worksheet…
Read article吃瓜tv / Engineering reference吃瓜tv / ENGINEERING REFERENCECapacitor symbols, clearly explainedRead the drawing. Verify the pin mapping.The capacitor symbol shows circuit function and explicit polarity or adjustment information. It does not select a dielectric, voltage rating or footprint. Use the atlas and follow the pin-to-pad chain.Open…
Read articleIf you’ve ever touched a live PCB and felt a mild zap even after unplugging it, you’ve already had a very personal introduction to how a capacitor works. As a PCB engineer, capacitors are probably the components I interact with most 鈥� and yet they’re still one of the most misunderstood passives on any board. […]
Read articleIf you’ve ever opened up a circuit board or watched an electronics tutorial, you’ve almost certainly come across a capacitor. They’re everywhere 鈥� from the tiniest wearable devices to massive industrial power systems. Yet for many beginners (and even some seasoned hobbyists), the question what is a capacitor remains surprisingly fuzzy. As a PCB engineer, I […]
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