3A6xx

3A6xx is a product designation used by multiple manufacturers to label a family of related parts. It is not a single, universally defined line, and the exact meaning of the prefix and suffix can vary between suppliers. In many catalogs, the 3A6 prefix identifies a particular component family, while the trailing two digits (xx) designate individual members within that family. The digits are commonly used to differentiate variants by characteristics such as electrical ratings, packaging, revision level, or tolerances.

Because there is no universal standard for this code, the precise interpretation of 3A6xx must be taken from the specific manufacturer's datasheet or catalog entry. Different vendors may assign the same 3A6xx code to different device types altogether, and even within a single manufacturer's line, the xx suffix may reflect different parameter sets or packaging options across revisions. When selecting or cross-referencing 3A6xx parts, engineers typically compare core specifications (for example, electrical ratings and package type) and verify pinouts, environmental requirements, and availability in the target supply chain.

The use of the 3A6xx designation illustrates a common practice in component numbering: prefixes signal a family or theme, while suffixes indicate submodels or variants. This approach facilitates cataloging across broad product ranges but also necessitates verification against authoritative documentation to avoid mismatches during design or procurement.

See also: part numbering, datasheet, cross-reference catalogs.