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. 787-7501
Mfr. Part No.42PLT8304PINTOP
$14.034
Each (In a Pack of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 570-688
Mfr. Part No.9PLS8274PINB
$9.90
Each
units
Twin Tube 9 W 2G7 151 mm 2700K 60W Warm White 82 827 28mm 1 600 lm 13000h A
RS Stock No. 702-5396
Mfr. Part No.16PLQ8272PIN
$9.152
Each (In a Pack of 10)
units
2D 16 W GR8 141 mm 2700K 16W Warm White 82 827 138mm 1 1050 lm 10000h B
RS Stock No. 792-6805
Mfr. Part No.4050300327235
BrandOsram
$7.81
Each
units
Quad Tube 26 W G24q-3 165 mm 3000K - Warm White 89 830 27mm 2 1800 lm 20000h A
RS Stock No. 792-6785
Mfr. Part No.4050300348568
BrandOsram
$16.23
Each
units
Triple Tube 32 W GX24q 148 mm 4000K - Cool White 89 840 49mm 2 2400 lm 20000h A
RS Stock No. 702-5419
Mfr. Part No.28PLQ8274PIN
$10.712
Each (In a Pack of 10)
units
2D 28 W GR10q 207 mm 2700K 28W Warm White 82 827 205mm 1 2050 lm 12000h B
RS Stock No. 472-7721
Mfr. Part No.DDE264
BrandOsram
$9.435
Each (In a Pack of 10)
units
Quad Tube 26 W G24q-3 165 mm 4000K 150W Cool White 80 840 27mm 2 1800 lm 20000h A
RS Stock No. 792-6788
Mfr. Part No.4050300425641
BrandOsram
$16.16
Each
units
Triple Tube 42 W GX24q 169 mm 3000K - Warm White 89 830 49mm 2 3200 lm 20000h A
RS Stock No. 570-723
Mfr. Part No.18PLC8272PIN
$11.23
Each
units
2D 18 W G24d-2 150 mm 2700K 100W Warm White 82 827 27mm 2 1200 lm 10000h B
RS Stock No. 792-6808
Mfr. Part No.4050300389059
BrandOsram
$9.01
Each
units
Quad Tube 13 W G24q-1 131 mm 3000K - Warm White 89 830 27mm 2 900 lm 20000h A
RS Stock No. 407-5626
Mfr. Part No.13PLC8402PIN
$10.18
Each
units
Quad Tube 13 W G24d-1 138 mm 4000K 75W Cool White 82 840 27mm 2 900 lm 10000h A
RS Stock No. 212-2455
Mfr. Part No.92246
BrandGE
$92.27
Each
units
Genura 23 W ES/E27 130 mm 3000K 100W Warm White 82 830 - - 1100 lm 15000h B
RS Stock No. 702-5362
Mfr. Part No.18PLT8304PINCS
$18.72
Each
units
Six Tube 18 W GX24q-2 112 mm 3000K 100W Warm White 82 830 41mm 3 1200 lm 13000h B
RS Stock No. 792-6820
Mfr. Part No.4050300010762
BrandOsram
$13.65
Each
units
Quad Tube 24 W 2G11 317 mm 3000K - Warm White 89 830 18mm 2 1800 lm 20000h A
RS Stock No. 570-600
Mfr. Part No.36PLL840
$20.00
Each
units
Twin Tube 36 W 2G11 417 mm 4000K 240W Cool White 82 840 38mm 1 2900 lm 20000h A
RS Stock No. 662-1439
Mfr. Part No.927939183540
$15.311
Each (In a Pack of 10)
units
2D 16 W GR10q 141 mm 3500K 16W Warm White 82 835 138mm 1 1050 lm 12000h A
RS Stock No. 780-6230
Mfr. Part No.41298
BrandGE
$9.591
Each (In a Pack of 25)
units
Stick 55 W 2G11 539 mm 4000K - Cool White 82 840 44mm - 4800 lm 22500h A
RS Stock No. 570-751
Mfr. Part No.13PLC8274PIN
$7.23
Each
units
2D 13 W G24q-1 131 mm 2700K 75W Warm White 82 827 27mm 2 900 lm 13000h A
RS Stock No. 407-5581
Mfr. Part No.7PLS8402PINB
$9.12
Each
units
Twin Tube 7 W G23 135 mm 4000K 40W Cool White 82 840 28mm 1 400 lm 10000h B
RS Stock No. 792-6763
Mfr. Part No.4050300342047
BrandOsram
$16.23
Each
units
Triple Tube 26 W GX24d 139 mm 4000K - Cool White 89 840 49mm 2 1800 lm 10000h A