---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/43472642.md"
description: "$Lumentum(LITE.US) Coherent has started sending samples of 300mm high-thermal-conductivity silicon carbide substrates to AI chip customers, claiming heat dissipation improves by up to 25%. There is still a gap between sample delivery and mass production, pending customer validation. $Applied Optoelectronics(AAOI.US)"
datetime: "2026-08-19T02:59:58.000Z"
locales:
  - [en](https://longbridge.com/en/topics/43472642.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/43472642.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/43472642.md)
author: "[光子力工](https://longbridge.com/en/profiles/2087063269115322368.md)"
---

# $Lumentum(LITE.US) Coherent has started sending sa…


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