
bestücken
to stock
To equip or supply something with the intended or necessary parts, objects, or goods.
Der Mitarbeiter muss das Regal mit den neuen Produkten bestücken.
The employee has to stock the shelf with the new products.
to stock / to populate
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to stock
To equip or supply something with the intended or necessary parts, objects, or goods.
Der Mitarbeiter muss das Regal mit den neuen Produkten bestücken.
The employee has to stock the shelf with the new products.

to populate
In electronics manufacturing, the placement of electronic components on a circuit board.
Die Maschine kann pro Stunde tausende Platinen automatisch bestücken.
The machine can automatically populate thousands of circuit boards per hour.
The verb is made up of the prefix 'be-' and the noun 'Stück' (piece). The prefix 'be-' often means to provide something with something. So 'bestücken' (to stock/equip) literally means to equip something with pieces or parts.
Die Freiwilligen bestücken die Essenspakete für die Bedürftigen.
The volunteers stock the food packages for people in need.
'Bestücken' is always used with a fixed structure: you stock something (accusative) with something (dative). The accusative object is what is being filled or supplied, and the 'mit' phrase describes what goes into it.
Der Juwelier bestückt das Schaufenster mit neuen Uhren.
The jeweler stocks the shop window with new watches.
In the general meaning, the objects that are stocked are often containers, displays, or surfaces. Typical examples are: 'ein Regal bestücken' (to stock a shelf), 'ein Buffet bestücken' (to stock/set up a buffet), 'einen Verkaufsautomaten bestücken' (to stock a vending machine), or 'eine Ausstellung bestücken' (to equip an exhibition).
Der Koch bestückt das Buffet mit frischen Salaten und warmen Speisen.
The cook stocks the buffet with fresh salads and hot dishes.
This meaning belongs to the technical language of electronics manufacturing. It is used when talking about 'Platinen' (printed circuit boards), 'Leiterplatten' (circuit boards), and 'elektronische Bauteile' (electronic components).
Diese Maschine kann eine Leiterplatte in wenigen Sekunden vollautomatisch bestücken.
This machine can fully automatically populate a circuit board in just a few seconds.
to provide / to be mistaken
„Versehen“ and „bestücken“ can both mean equipping something with parts. „Bestücken“ is the technically precise choice for electronic components, while „versehen“ says more generally that something is equipped with something. In a technical manufacturing context, „bestücken“ is therefore usually the better choice.

Die Techniker bestücken die Platine mit mehreren kleinen Bauteilen.
The technicians populate the circuit board with several small components.
Die Techniker versehen die Platine mit mehreren kleinen Bauteilen.
The technicians equip the circuit board with several small components.