# ANSI/IEEE feedthrough capacitor symbol

Canonical URL: https://eloragrid.ai/symbols/ansi-feedthrough-capacitor
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: C FEED
Drawing use: SLD, Schematic
Reference families: IEEE / ANSI, Manufacturer

## Symbol convention

Convention: IEEE / ANSI
Form: Autodesk IEEE-oriented Capacitive Components 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: [Feedthrough capacitor](https://eloragrid.ai/symbols/feedthrough-capacitor)

IEEE-oriented graphical reference for feedthrough capacitor, with public vendor evidence and drawing-reading notes.

## What it represents

The feedthrough capacitor form combines a through conductor with a documented capacitive filtering connection. Its circuit reader must distinguish the through-current path from the return or case connection serving the filtering function.
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

- Follow the through conductor and shunt return as different paths.
- 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

- Identify filtered conductor
- Show return/case connection
- Reference component ratings

## Important distinction

A feedthrough capacitor is a filtering element, not a detachable feed-through terminal.

## Facts

- Convention evidence: Autodesk IEEE Symbol Preview — Capacitive Components
- Public vendor block name: HCA1C2 (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 — Capacitive Components](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-0F8673C7-D786-441C-AB55-F2CDB8D5B288.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.