Bulk refers to a package (usually a bag) of loose unorganized parts, and is usually unsuitable for automated assembly machines. Bulk parts are packaged according to the ESD (ElectroStatic Discharge) and MSL (Moisture Sensitivity Level) protection requirements determined by the manufacturer.

Datasheet is the technical data form of the product, which generally exists in PDF format or docx format.

(981HE0B4WA1F16.PDF,
981HE0B4WA1F16.docx,
981HE0B4WA1F16.zip)

981HE0B4WA1F16 Vishay / Spectrol