# ANSI/IEEE led indicator lamp symbol

Canonical URL: https://eloragrid.ai/symbols/ansi-led-indicator-lamp
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: LAMP LED
Drawing use: Schematic
Reference families: IEEE / ANSI, Manufacturer

## Symbol convention

Convention: IEEE / ANSI
Form: Autodesk IEEE-oriented LEDs 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.
Related representation: [LED indicator lamp](https://eloragrid.ai/symbols/led-indicator-lamp)

IEEE-oriented graphical reference for led indicator lamp, with public vendor evidence and drawing-reading notes.

## What it represents

The LED indicator form identifies a documented panel indication assembly using a light-emitting semiconductor. Its rated input and any polarity requirement belong to the complete assembly rather than to an assumed bare LED.
This is a convention-specific lookup based on the publisher's IEEE-labelled preview. The geometry here is independently drawn to explain the connection or operation; it is not a certified reproduction of the standard graphic.

## How to read it

- Read the assembly terminal and supply data.
- Read the selected library and the project legend together. A vendor block identifier is meaningful within its named library and is not a universal standard-symbol code.

## Information to show or reference

- State indicator voltage
- Preserve specified polarity
- Name visual signal meaning

## Important distinction

A panel LED indicator may contain internal limiting or protection components absent from a bare LED symbol.

## Facts

- Convention evidence: Autodesk IEEE Symbol Preview — LEDs
- Public vendor block name: HLT1H25 (Autodesk identifier; not an IEEE symbol number)
- Standards context: IEEE/ANSI 315-1975 covers diagram graphics. IEEE lists this edition as Inactive-Reserved.
- Artwork scope: Original functional illustration; exact standard glyph and compliance are not certified

## Public references

- [Autodesk IEEE Symbol Preview — LEDs](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-21296086-A519-4A08-B8AC-0AFF670B8F53.htm) — Autodesk. Exact public IEEE-oriented category page verifying the component name and vendor block identifier.
- [IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams](https://standards.ieee.org/ieee/315/515/) — IEEE Standards Association. Graphic-symbol standards context and official status; not a source of reproduced artwork.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.