CFL Bulbs

CFLs (Compact Fluorescent Lamps) are energy-saving bulbs used in lighting fixtures. The lamp consists of a fluorescent tube which has been made into a shape the same size as a traditional incandescent light bulb.

How does a CFL work?
Compact Fluorescent Bulbs contain gases which are given an electric current. This current creates UV light which excites the gases. 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.
Globe bulbs are spherical shaped.
Spiral bulbs have a fluorescent tube which is shaped into a spiral curve.
Stick bulbs usually consist of multiple tubes which are straight.

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 and the lower the value, the warmer the white. For example, 2700K would be warm white lighting, while 5000K would be cool white lighting.

CFL Bases:
The base of the bulb depicts what fitting it pairs with. CFL lamps usually have a Bayonet or Edison base, in various sizes. Bayonet bases are fitted with a push and twist action, while Edison is a screw in base.

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. Many people are familiar with the appearance of different wattages, so it provides 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. 800-3735
Mfr. Part No.82174
BrandGE
TWD1,527
Each
units
R80 23 W E27 130 mm 2700K 84W Warm White 80 827 83mm - 580 lm 15000h B
RS Stock No. 800-3776
Mfr. Part No.71296
BrandGE
TWD129
Each
units
Stick 11 W E14 132 mm 2700K 60W Warm White 82 827 44.5mm - 590 lm 10000h A
RS Stock No. 820-8801
Mfr. Part No.009316
BrandOrbitec
TWD296
Each
units
Oval 9 W B22d 100 mm 4000K 40W - - - 50mm - - - A
RS Stock No. 791-8327
Mfr. Part No.0035002
BrandSylvania
TWD135
Each
units
Stick 11 W E27 120 mm 2700K 48W - 80 827 42mm - 560 lm 8000h A
RS Stock No. 791-8292
Mfr. Part No.0035221
BrandSylvania
TWD263
Each
units
Spiral 8 W E27 90 mm 2700K 40W - 80 827 45mm - 450 lm 10000h A
RS Stock No. 791-8315
Mfr. Part No.0035208
BrandSylvania
TWD132
Each
units
Spiral 12 W E14 97.5 mm 2700K 50W - 80 827 45mm - 600 lm 10000h A
RS Stock No. 791-8330
Mfr. Part No.0035004
BrandSylvania
TWD145
Each
units
Stick 15 W E27 133 mm 2700K 64W - 80 827 42mm - 810 lm 8000h A
RS Stock No. 811-7147
Mfr. Part No.85640
BrandGE
TWD226
Each
units
Spiral - E27 100 mm 2700K 58W Warm White 82 827 46mm 1 715 lm 10000h A
RS Stock No. 791-8365
Mfr. Part No.0035601
BrandSylvania
TWD351
Each
units
Globe 20 W E27 139.5 mm 2700K 85W - 80 827 95mm - 1200 lm 10000h A
RS Stock No. 818-3263
Mfr. Part No.33769
BrandGE
TWD270
Each (In a Pack of 6)
units
Heliax 15 W B22d 117 mm 2700K 66W Warm White 82 827 60mm - 830 lm 8000h A
RS Stock No. 791-8333
Mfr. Part No.0035013
BrandSylvania
TWD145
Each
units
Stick 15 W B22 131.5 mm 2700K 64W - 80 827 42mm - 810 lm 8000h A
RS Stock No. 791-8295
Mfr. Part No.0035213
BrandSylvania
TWD144
Each
units
Spiral 15 W B22 103 mm 2700K 70W - 80 827 45mm - 900 lm 10000h A
RS Stock No. 789-9872
Mfr. Part No.0035128
BrandSylvania
TWD198
Each
units
Stick 23 W E27 148 mm 2700K 104W Natural 80 827 48mm - 1450 lm 10000h A
RS Stock No. 791-8399
Mfr. Part No.0035305
BrandSylvania
TWD217
Each
units
Candle 9 W E14 125 mm 2700K 40W - 80 827 39mm - 450 lm 10000h A
RS Stock No. 791-8324
Mfr. Part No.0035001
BrandSylvania
TWD127
Each
units
Stick 9 W E14 110 mm 2700K 38W - 80 827 42mm - 410 lm 8000h A
RS Stock No. 791-8321
Mfr. Part No.0035012
BrandSylvania
TWD135
Each
units
Stick 11 W B22 118.5 mm 2700K 48W - 80 827 42mm - 560 lm 8000h A
RS Stock No. 791-8302
Mfr. Part No.0035212
BrandSylvania
TWD132
Each
units
Spiral 12 W E27 95 mm 2700K 50W - 80 827 45mm - 600 lm 10000h A
RS Stock No. 782-3327
Mfr. Part No.98887
BrandGE
TWD241
Each
units
Spiral 12 W E27 98 mm 2700K 60W Warm White 80 827 52mm - 715 lm 15000h -
RS Stock No. 820-8808
Mfr. Part No.009314
BrandOrbitec
TWD296
Each
units
Oval 9 W B22d 100 mm 2700K 40W - - - 50mm - - - A
RS Stock No. 791-8380
Mfr. Part No.0035404
BrandSylvania
TWD183
Each
units
Globe 9 W E14 101.5 mm 2700K 40W - 80 827 51mm - 450 lm 10000h A