Office hours

We are open during the following times:


9:00am to 5:00pm Monday to Friday. Excluding National holidays


In case of urgency please call +44 7831 821 236



You can also contact us outside these times using our online contact form.

Contact us

Please contact us by phone with any questions you may have.


+44 1229 581551



Full contact details are on our contact page



New UV products

Kyosemi offer new UV devices in a special package capable of housing optical filters.

New InGaAsProducts

Side detecting InGaAS photodiodes chips make easy detection for hybrid applications

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