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

K DIODE

IEEE / ANSI

ANSI/IEEE relay coil with diode suppression symbol

The diode-suppressed relay form combines the operating element with a documented suppression component. The coil and diode connection establishes polarity requirements and can affect release behaviour, so the assembled relay or socket diagram is relevant.

Drawing use: Schematic
Application: Control circuits
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented Relays with Suppression functional form. Autodesk explicitly publishes this block under IEEE Symbol Preview. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

A coil suppression diode and a rectifier in the power path serve different circuit functions.

Full reference

K DIODE

Symbols

Relay coil with diode suppression

A relay with diode suppression includes a diode associated with its coil to limit the transient on de-energisation. The diode's documented connection makes control polarity important.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / Manufacturer

A distinction that matters

A suppression diode protects the control circuit; it is not a contact-side arc suppressor.

Full reference

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