CST Global is an independent, volume-producer of III-V compound semiconductors for the fabrication of photonics products.

CST Global provides both a custom foundry service, as well as a range of high-volume, standard laser products for the optical communications markets. We are an active partner in the UK and European, Technology Consortium Programme.

We work with leading companies around the world in the Telecommunications, PON, Industrial, Defence and Healthcare markets.


CST Global is an active member and supporter of the UK and European Technology Consortium Programme.


CST Global provides volume solutions for InP, GaAs, GaN, GaSb, Ge, AlN, Si and Qz compounds in wavelengths from 400nm to 4.2um.


CST Global provides custom, foundry services in wafer, coated bar, chip device and die on tape formats. Our fabrication facility is qualified for 4" wafers, but enabled for 3" wafers.

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