# PNP bipolar transistor

Canonical URL: https://eloragrid.ai/symbols/pnp-bipolar-transistor
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: PNP
Drawing use: Schematic
Reference families: Manufacturer

A bipolar transistor with base, collector and emitter terminals arranged for PNP operation.

## What it represents

A bipolar transistor with base, collector and emitter terminals arranged for PNP operation.
On a schematic, identify the base drive and emitter supply/reference and trace the collector load and switching or amplification path. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
PNP polarity differs from NPN; mirrored graphics do not change a transistor's type or package pin assignment.
Terminal letters describe electrical roles, not package pin numbers. Check the selected public datasheet for the actual pin assignment, polarity and any internally connected terminals before completing the drawing.

## How to read it

- Identify the base drive and emitter supply/reference.
- Trace the collector load and switching or amplification path.

## Information to show or reference

- Label the base drive and emitter supply/reference.
- Cross-reference the collector load and switching or amplification path.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.

## Important distinction

PNP polarity differs from NPN; mirrored graphics do not change a transistor's type or package pin assignment.

## Facts

- Common schematic mnemonic: PNP — descriptive only; project/device documentation defines reference designations.
- Terminal / interface focus: The base drive and emitter supply/reference
- Artwork scope: Original educational component glyph; not a certified standard graphic or package pinout.

## Public references

- [BC856/BC857/BC858 PNP transistor documentation](https://assets.nexperia.com/documents/data-sheet/BC856_BC857_BC858.pdf) — Nexperia. 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.