---
title: RoHS
lang: en
type: notion
tags:
  - ese
  - notion
prerequis: []
aa: []
draft: false
source_fr: conduite/ese/rohs.md
source_sha256: cfc31652582cc12b70a27a738eb2236672b858dfca4a35e1f991df5751b61778
---

**RoHS** (Restriction of Hazardous Substances) is the European directive that **restricts the use of hazardous substances** in electrical and electronic equipment (lead, mercury, cadmium, certain flame retardants…). It is the reason lead-free solder became standard in electronics.

## In the project

RoHS is met directly at the bench: the [[soudure-en|solder]] used in lab sessions is lead-free for this very reason. At project level, the directive is above all a **constraint on component choice**, favouring compliant part numbers, and a line to **record** on the [[ecoconception-en|eco-design]] and [[securite-et-qualite-en|safety and quality]] side, with no aim of certification.

*Restricted-substance lists, thresholds and exemptions belong to the **standards course** and to the ESE discipline. This wiki limits itself to placing RoHS within the technical choices of the project.*

## See also

- [[reach-en|REACH]] and [[deee-en|WEEE]] — the neighbouring environmental regulations
- [[soudure-en|Soldering]] — lead-free solder follows from RoHS
- [[ecoconception-en|Eco-design]] — where the constraint steers the choices
- [[caracteriser-une-exigence-en|Characterising a requirement]] — a regulatory constraint is written as a requirement (binary target, often F0)
- **Standards course** (colleagues) — substances, thresholds, exemptions