---
title: "Wiznet Numbers On the Chip"
url: "https://maker.wiznet.io/forum/13707"
markdown_url: "https://maker.wiznet.io/forum/13707/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "tandis"
created: "2020-02-17T12:49:45+09:00"
last_activity: "2020-02-18T07:38:16+09:00"
language: "en"
views: 350
replies: 2
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Wiznet Numbers On the Chip

## Question

Asked by tandis on 2020-02-17 in Ethernet Chips.

Hello! I want to know what the meaning of the numbers on the w5300 is.
What is the difference of w5300 PAT29-010-1221 , w5300 P4FW0-161-0747 and w5300 PP268-010-1818?

## Replies

### Reply 1 by irina, 2020-02-18

Hi!

Those code is the date code of FAB and package manufacturer.

### Reply 2 by tandis, 2020-02-18 (in reply to reply 1)

Thanks for reply! Would you please explain more specifically?

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Source: https://maker.wiznet.io/forum/13707