T8 ni ikiLEDitara?“T” bisobanura “tubular” (imiterere y'itara) kandi umubare werekana diameter muri munani ya santimetero.T8 ifite umurambararo wa santimetero 1 (cyangwa 8/8), T5 ifite diameter 5/8, naho T12 ifite diameter 12/8 (cyangwa 1-1 / 2 cm).