CFL Bulbs

CFLs (Compact Fluorescent Lamps) are energy-saving bulbs consisting of a fluorescent tube that has been made into a shape the same size as a traditional incandescent light bulb.

How does a CFL work?

CFL Bulbs contain gases that are given an electric current, generating UV light which then excites the gasses. A phosphorous layer is then produced on the inside which glows, giving off light. There is very little heating involved.

What shape are CFLs?

Compact fluorescent light bulbs come in various shapes, such as:

  • Candle bulbs represent the shape of a flame, with a pointed tip, and are often used in decorative fixtures, especially slimmer designs that can't accommodate a globe or spiral bulb.
  • Globe bulbs are spherical shaped and are often used in vanity mirrors and bathroom pendants. They may take longer to reach full brightness but will become as bright as other CFLs.
  • Spiral bulbs have a fluorescent tube that is shaped into a spiral curve. This is the most common CFL bulb shape, producing the same amount of light as an incandescent bulb.
  • Stick or tube bulbs usually consist of multiple tubes which are straight. Like candle bulbs, they are commonly used in slimmer lighting fixtures.

What colour are CFL bulbs?

CFL light bulbs come in many variations of white. They are most commonly classed as "Cool White" or "Warm White", which describes the colour temperature of the light that the bulb emits. Colour temperature is a measurement of the light output, given in Kelvin (K). The higher the value, the cooler the white. For example, 5000K would be cool white lighting.

CFL Bases:

The base of the bulb depicts what fitting it pairs with. CFL lamps usually have a push and twist bayonet or Edison screw base, both of which are available in various sizes.

Why choose a CFL bulb?

Fluorescent bulbs are designed to be more energy-efficient than incandescent or halogen bulbs. They have a very low energy consumption which also saves money on electricity bills, over time. CFL bulbs have a much longer lifetime too, of up to approximately 10 years. The lifetime of the light bulb will be stated in hours.

What is CFL Equivalent Wattage?

Although CFLs do not use the same technology as incandescent bulbs, they are often given a comparable wattage value, providing an easy comparison to the equivalent wattage.


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Description Price Shape Wattage Lamp Base Length Colour Temperature Incandescent Equivalent Wattage Colour Tone Colour Rendering Colour Reference Diameter Number of loops Luminosity Life Hours EU Energy Efficiency Rating
RS Stock No. 463-5903
Mfr. Part No.DL2484
BrandOsram
PHP498.325
Each (In a Pack of 10)
units
Twin Tube 24 W 2G11 320 mm 4000K 150W Cool White 80 840 38mm 1 1800 lm 10000h A
RS Stock No. 463-5919
Mfr. Part No.4050300010786
BrandOsram
PHP610.635
Each (In a Pack of 10)
units
Twin Tube 36 W 2G11 415 mm 4000K 240W Cool White 80 840 38mm 1 2900 lm 10000h A
RS Stock No. 463-6170
Mfr. Part No.DD2682
BrandOsram
PHP260.50
Each (In a Pack of 10)
units
Quad Tube 26 W G24d-3 172 mm 2700K 150W Extra Warm White 80 827 27mm 2 1800 lm 10000h A
RS Stock No. 792-6814
Mfr. Part No.4050300025742
BrandOsram
PHP236.20
Each
units
Quad Tube 9 W G23 167 mm 3000K - Warm White 89 830 27mm 2 600 lm 10000h A
RS Stock No. 792-6811
Mfr. Part No.4050300010731
BrandOsram
PHP370.05
Each
units
Quad Tube 18 W 2G11 217 mm 3000K - Warm White 89 830 18mm 2 1200 lm 20000h A
RS Stock No. 792-6794
Mfr. Part No.4050300025704
BrandOsram
PHP252.74
Each
units
Quad Tube 18 W G24d-2 153 mm 3000K - Warm White 89 830 27mm 2 1200 lm 10000h B
RS Stock No. 792-6801
Mfr. Part No.4050300327211
BrandOsram
PHP253.39
Each
units
Quad Tube 18 W G24q-2 146 mm 3000K - Warm White 89 830 27mm 2 1200 lm 20000h A
RS Stock No. 463-6164
Mfr. Part No.4050300011462
BrandOsram
PHP251.419
Each (In a Pack of 10)
units
Quad Tube 18 W G24d-2 153 mm 2700K 100W Extra Warm White 80 827 27mm 2 1200 lm 10000h B
RS Stock No. 792-6839
Mfr. Part No.4050300295879
BrandOsram
PHP425.48
Each
units
Quad Tube 55 W 2G11 535 mm 4000K - Cool White 89 840 18mm 2 4800 lm 20000h A+
RS Stock No. 792-6823
Mfr. Part No.4050300010793
BrandOsram
PHP418.37
Each
units
Quad Tube 36 W 2G11 411 mm 3000K - Warm White 89 830 17.5mm 2 2900 lm 20000h A
RS Stock No. 792-6820
Mfr. Part No.4050300010762
BrandOsram
PHP375.56
Each
units
Quad Tube 24 W 2G11 317 mm 3000K - Warm White 89 830 18mm 2 1800 lm 20000h A
RS Stock No. 792-6817
Mfr. Part No.4050300025759
BrandOsram
PHP236.82
Each
units
Quad Tube 11 W G23 237 mm 3000K - Warm White 89 830 27mm 2 900 lm 10000h A
RS Stock No. 792-6763
Mfr. Part No.4050300342047
BrandOsram
PHP526.52
Each
units
Triple Tube 26 W GX24d 139 mm 4000K - Cool White 89 840 49mm 2 1800 lm 10000h A
RS Stock No. 792-6766
Mfr. Part No.4050300342245
BrandOsram
PHP526.52
Each
units
Triple Tube 18 W GX24q 117 mm 3000K - Warm White 89 830 49mm 2 1200 lm 20000h A
RS Stock No. 792-6827
Mfr. Part No.4050300279909
BrandOsram
PHP425.48
Each
units
Quad Tube 40 W 2G11 533 mm 4000K - Cool White 89 840 18mm 2 3500 lm 20000h A+
RS Stock No. 472-7989
Mfr. Part No.012056
BrandOsram
PHP308.88
Each (In a Pack of 10)
units
Quad Tube 18 W G24d-2 153 mm 4000K 100W Cool White 80 840 27mm 2 1200 lm 10000h B
RS Stock No. 792-6772
Mfr. Part No.4050300342283
BrandOsram
PHP526.52
Each
units
Triple Tube 26 W GX24q 132 mm 4000K - Cool White 89 840 49mm 2 1800 lm 20000h A
RS Stock No. 792-6776
Mfr. Part No.4050300348582
BrandOsram
PHP524.15
Each
units
Triple Tube 32 W GX24q 148 mm 3000K - Warm White 89 830 49mm 2 2400 lm 20000h A
RS Stock No. 463-5880
Mfr. Part No.DDE262
BrandOsram
PHP343.165
Each (In a Pack of 10)
units
Quad Tube 26 W G24q-3 165 mm 2700K 150W Extra Warm White 80 827 27mm 2 1800 lm 20000h A
RS Stock No. 792-6779
Mfr. Part No.4050300342306
BrandOsram
PHP525.16
Each
units
Triple Tube 26 W GX24q 132 mm 3000K - Warm White 89 830 49mm 2 1800 lm 20000h A