# Shunt voltage reference

Canonical URL: https://eloragrid.ai/symbols/shunt-voltage-reference
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: VREF-H
Drawing use: Schematic
Reference families: Manufacturer

Establishes a reference voltage using a shunt-current path and the documented bias or feedback circuit.

## What it represents

Establishes a reference voltage using a shunt-current path and the documented bias or feedback circuit.
On a schematic, identify the shunt terminals, bias-current source and adjustment network and trace the reference node and return conductor. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
A shunt reference requires its bias arrangement; its terminals cannot be substituted directly for a three-terminal series reference.
The preview is an independently drawn educational functional reference. Add the selected component’s actual power pins, terminal numbers, timing or analogue reference details when producing a construction drawing.

## How to read it

- Identify the shunt terminals, bias-current source and adjustment network.
- Trace the reference node and return conductor.

## Information to show or reference

- Label the shunt terminals, bias-current source and adjustment network.
- Cross-reference the reference node and return conductor.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

## Important distinction

A shunt reference requires its bias arrangement; its terminals cannot be substituted directly for a three-terminal series reference.

## Facts

- Common schematic mnemonic: VREF-H — descriptive only; project/device documentation defines reference designations.
- Terminal / interface focus: The shunt terminals, bias-current source and adjustment network
- Artwork scope: Original educational functional/circuit reference; not a selected product pinout.

## Public references

- [TL431 — programmable shunt references](https://www.ti.com/product/TL431) — Texas Instruments. Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.

## 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.