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SON-T Lamps

SON-T lamps are tubular high pressure sodium lamps often used for such purposes as high bay industrial lighting, public amenity lighting, car parks, subways, residential lighting, and road lights. They emit a pleasing golden white light but are nonetheless very poor for rendering colour accurately.

SON lamps boast long lifespans - usually around 15,000 to 30,000 hours but upwards of 50,000 hours in long-life models; they’re cheap to run, too, with high luminous efficacy. The tubular style of sodium lamp usually has a clear finish, and just like their elliptical siblings they’re available in a very broad range of wattages.


Among our range of SON-T lamps you’ll find some with internal ignitors and some with external. With the external types of bulb the ignitor will be integrated into the light fitting itself. As these bulbs are so long-lasting they are marked with an ‘I’ or ‘E’ enclosed by a triangle in order to remind you what type of replacement you require.

Brand variation

Manufacturers label their SON bulbs using various proprietary names:

  • Sylvania = SHP
  • GE Lighting = Lucalox
  • Philips = SON
  • Osram = Vialox Nav
  • Venture = HPS

Commercial fulfilment with Lyco

For any commercial lighting project you can always turn to Lyco for the solution. We’re available to discuss your requirements by telephone or email, and we provide a caring and efficient service with next-day delivery available on most of our products!

Read more about SON-T Lamps

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