Section
Category: Components
Microcontrollers, power semiconductors, sensors, connectors, and radios — what to put on the RFQ.
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Connectors, cables, and wireless modules: specify the link, not the adjective
RJ45, USB, fiber, and a Wi-Fi module solve different links. Current, impedance, mating cycles, and range belong on the drawing.
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How to choose a sensor: range, output, and the noise around it
Pressure, temperature, proximity, and photoelectric sensors fail in purchasing when the range, the output, and the environment are left as adjectives.
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MOSFET or IGBT: pick the switch from the voltage and the heat
MOSFETs win on speed and low-voltage efficiency. IGBTs still carry high voltage and high current in drives and inverters. The datasheet, not the adjective, decides.
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How to choose a microcontroller without trapping the product
Flash, RAM, peripherals, temperature grade, and who will still sell the chip in five years matter more than the brand on the development board.