Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

SSW UNI

IEEE / ANSI

ANSI/IEEE Unidirectional semiconductor power switch form

This reference locates unidirectional semiconductor power switch in Autodesk's IEEE-oriented power switches family. A unidirectional semiconductor switch has a specified direction for its power conduction or control behaviour. The functional direction must be identified so reversing a schematic orientation does not reverse the intended meaning. The public library uses HCB11Q57 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.

Drawing use

SLD / Schematic

Application

Power distribution

Reference family

IEEE / ANSI / Manufacturer

Form evidence

1P with Semiconductors - unidirectional. Autodesk IEEE Symbol Preview: Power Switches, block HCB11Q57. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.

A distinction that matters

Unidirectional operation concerns the circuit path; it does not describe the direction of all system power flows.

Full referenceAdd to legend

SSW UNI

Symbols

Unidirectional semiconductor power switch

A unidirectional semiconductor switch has a specified direction for its power conduction or control behaviour. The functional direction must be identified so reversing a schematic orientation does not reverse the intended meaning.

Drawing use

SLD / Schematic

Application

Power distribution

Reference family

IEC / Manufacturer

A distinction that matters

Unidirectional operation concerns the circuit path; it does not describe the direction of all system power flows.

Full referenceAdd to legend

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.