G5 t5 fluorescent bulb philips master tl5 headvantages higher degree of effect than 26 mm fluorescent bulbs through optimisation of the light current at 35c allowance of a further system miniaturisation and maximum freedom in the lamp design through a 16 mm diameter nearly constant light current throughout the lifespan maximum light current at 35c super 80 light colours 3 band light bulb specially developed for operation with evgs guaranteed ignition from 15 to 50c nearly consta