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. 570-593
Mfr. Part No.24PLL840
PHP485.89
Each
units
Twin Tube 24 W 2G11 322 mm 4000K 150W Cool White 82 840 38mm 1 1800 lm 20000h A
RS Stock No. 787-7501
Mfr. Part No.42PLT8304PINTOP
PHP622.063
Each (In a Pack of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 407-5597
Mfr. Part No.9PLS8402PINB
PHP254.90
Each
units
Twin Tube 9 W G23 167 mm 4000K 60W Cool White 82 840 28mm 1 600 lm 10000h A
RS Stock No. 463-5903
Mfr. Part No.DL2484
BrandOsram
PHP523.789
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. 791-8337
Mfr. Part No.0035006
BrandSylvania
PHP320.10
Each
units
Stick 20 W E27 132.5 mm 2700K 85W - 80 827 48mm - 1160 lm 8000h A
RS Stock No. 463-5919
Mfr. Part No.4050300010786
BrandOsram
PHP639.945
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. 570-723
Mfr. Part No.18PLC8272PIN
PHP284.42
Each
units
2D 18 W G24d-2 150 mm 2700K 100W Warm White 82 827 27mm 2 1200 lm 10000h B
RS Stock No. 711-7237
Mfr. Part No.925464
BrandSylvania
PHP321.206
Each (In a Pack of 10)
units
Twin Tube 55 W 2G11 533 mm 4000K - Warm White 85 830 40mm 1 2936 lm 10000h A
RS Stock No. 570-565
Mfr. Part No.36PLL830
PHP457.54
Each
units
Twin Tube 36 W 2G11 417 mm 3000K 240W Warm White 82 830 38mm 1 2900 lm 20000h A
RS Stock No. 570-587
Mfr. Part No.18PLL840
PHP617.48
Each
units
Twin Tube 18 W 2G11 227 mm 4000K 100W Cool White 82 840 38mm 1 1200 lm 20000h A
RS Stock No. 570-650
Mfr. Part No.11PLS8272PINB
PHP298.66
Each
units
Twin Tube 11 W G23 236 mm 2700K 75W Warm White 82 827 28mm 1 900 lm 10000h A
RS Stock No. 570-694
Mfr. Part No.11PLS8274PINB
PHP338.12
Each
units
Twin Tube 11 W 2G7 220 mm 2700K 75W Warm White 82 827 28mm 1 900 lm 13000h A
RS Stock No. 463-6170
Mfr. Part No.DD2682
BrandOsram
PHP273.785
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. 570-688
Mfr. Part No.9PLS8274PINB
PHP266.21
Each
units
Twin Tube 9 W 2G7 151 mm 2700K 60W Warm White 82 827 28mm 1 600 lm 13000h A
RS Stock No. 570-543
Mfr. Part No.18PLL830
PHP718.60
Each
units
Twin Tube 18 W 2G11 227 mm 3000K 100W Warm White 82 830 38mm 1 1200 lm 20000h 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. 792-6814
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. 702-5371
Mfr. Part No.18PLT8404PINCS
PHP390.31
Each
units
Six Tube 18 W GX24q-2 112 mm 4000K 100W Cool White 82 840 41mm 3 1200 lm 13000h B
RS Stock No. 811-7730
Mfr. Part No.0025660
BrandSylvania
PHP397.504
Each (In a Pack of 10)
units
Twin Tube 55 W 2G11 540 mm 4000K - Cool White 82 840 - 1 4700 lm 20000h A
RS Stock No. 407-5581
Mfr. Part No.7PLS8402PINB
PHP309.48
Each
units
Twin Tube 7 W G23 135 mm 4000K 40W Cool White 82 840 28mm 1 400 lm 10000h B