Side-by-side reference

Understand the difference.

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

First referenceCompare with

IEEE / ANSI

ANSI/IEEE spark gap symbol

A spark gap is a pair of electrodes separated by a gap that flashes over when the voltage exceeds its breakdown level. It appears in surge protection of telecom and control circuits and on older equipment as coordinating gaps. The publisher's IEEE miscellaneous preview lists a spark gap form, the counterpart of the existing IEC page.

Drawing use: Schematic
Application: Connections & wiring
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented spark gap form. Autodesk publishes this block under IEEE Symbol Preview: Miscellaneous. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

A spark gap is a simple breakdown element; a gas discharge tube encloses the gap in gas for a defined breakdown.

Full reference

SPARK GAP

Symbols

Spark-gap protective element

A spark-gap element provides a documented breakdown path across separated electrodes. Its drawing identifies the protective location without implying the same behaviour as a semiconductor clamp.

Drawing use: SLD / Schematic
Application: Connections & wiring
Reference family: IEC / Manufacturer

A distinction that matters

A spark-gap element and a varistor use different protective mechanisms.

Full reference

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