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From the desk
Market signals, technical notes, and practical sourcing guidance for semiconductor procurement.
2N7002 dipanggil aras logik, tetapi pada 3.3 V ia ialah suis 20 mA: penyebaran ambang menghabiskan margin dan RDS(on) kira-kira berganda. Berikut ialah pengiraannya.
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Cara memilih diod TVS atau ESD: padankan voltan standoff dengan rel, voltan pengapit dengan maksimum mutlak pin, dan kapasitans dengan kelajuan antara muka.
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Satu perintang menetapkan arus, tetapi voltan masukan dan kuprum menentukan suhu. Aritmetiknya, jadual derating, dan mengapa 1 A sering menjadi 0.5 A.
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The lowest IC unit price doesn't always mean the lowest procurement cost. Discover how EMS and PCBA buyers can evaluate landed costs, MOQ, reel packaging, BOM...
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Kira had pull-up I2C, fahami mengapa 4.7 kOhm mungkin gagal pada 400 kHz, dan diagnos pull-up modul selari, tepi perlahan dan kesilapan domain voltan.
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Op-amp dwi dalam sejuta reka bentuk kos rendah: mengapa julat masukannya lebih lebar daripada julat outputnya, dan apa yang rosak apabila anda menukar gantinya.
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AMS1117 berkadar 1 A, tetapi pada input 12 V had terma dicapai hampir 0.19 A. Berikut ialah pengiraan, lengkung penurunan kadar, dan penyelesaiannya.
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Minggu 44 membawa penurunan yang meluas: LDO mengatasi 32-bit MCU sebagai kategori teratas, manakala inventori spot global terus meningkat kepada 7.32 bilion unit.
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