---
title: "Failure rate for W5500"
url: "https://maker.wiznet.io/forum/11685"
markdown_url: "https://maker.wiznet.io/forum/11685/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "nevnyab123"
created: "2016-02-22T13:38:00+09:00"
last_activity: "2017-05-04T08:38:20+09:00"
language: "en"
views: 508
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Failure rate for W5500

## Question

Asked by nevnyab123 on 2016-02-22 in Ethernet Chips.

What is the failure rate or MTTF or MTBF for the W5500?

## Replies

### Reply 1 by Eugeny, 2016-02-22

Neville, I assume you need this information to certify device usage within regulated railway industry. I am afraid you will not get this information here in the forum, and you will most probably require written certification from WIZnet. I advise you contact WIZnet using the phone - [url][http://www.shopwiznet.com/contact\[/url\]](http://www.shopwiznet.com/contact%5B/url%5D) - start here, and you should get guidance what to do.

---

Source: https://maker.wiznet.io/forum/11685