An electronic components distributor is a company that buys electronic parts from the companies that make them, and sells them to engineers and businesses, often online and in small quantities. Resistors, capacitors, microcontrollers, sensors and connectors are all electronic components. A large distributor's online catalogue holds millions of parts from hundreds of manufacturers.
Why does an engineer buy from a distributor and not from the manufacturer? A chip maker sells mostly to large electronics companies, in reels of thousands of parts. A student, a start-up or a small factory needs ten pieces, or a hundred. The distributor buys in bulk, stores the parts, and sells them a few at a time. It also gives each part a page with its datasheet, the manufacturer's document that lists every specification of the part.
The most important feature is search by specification, called parametric search. Engineers rarely search by name. They choose a category, such as voltage regulators, and then filter by numbers: the output voltage, the maximum current, the package size and the operating temperature. Each filter shortens the list until only a few parts remain. This works only if every part's specifications are stored in the same fields and the same units. That data comes from manufacturers through product information management (PIM) software. Some distributors also add industrial product search, which understands a description written in plain words.
Take, for example, a final-year student in Bhubaneswar who is building a small weather station. She needs a voltage regulator that turns the 5 volts from a USB cable into the 3.3 volts that her microcontroller and her sensors need. It must supply at least 500 milliamperes. The regulator category has more than 20,000 parts. She sets the output voltage to 3.3 V, the current to 500 mA or more, and a package large enough to solder by hand. The list falls to about 40 parts. She sorts them by price, reads two datasheets and orders 10 pieces at about ₹30 each, together with the other parts for her project. The order reaches her hostel in about a week, through an express courier network.
For a start-up, the distributor matters in another way. The start-up can buy small quantities for its first 100 products, and larger quantities later for production. Many distributors show the stock and the expected delivery date for each part, so an engineer can choose a part that is actually available.
How is a distributor different from an online marketplace? A marketplace lets many sellers list their goods, and never owns them. A distributor buys and stores every part it sells. The difference is explained in marketplace vs inventory model.