Osram 21 W T5 Fluorescent Tube, 1900 lm, 850mm, G5

  • RS Stock No. 700-1378
  • Mfr. Part No. FH21830
  • Manufacturer Osram
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

LUMILUX T5 HE Tubular Fluorescent Tubes With G5 Base

This range of fluorescent tubes from Osram are a standard T5 size. They are tubular with a diameter of 16 mm and a G5 base. These T5 fluorescent tubes have a long average lifespan of up to 24,000 hours when used with Quicktronic ECGs.
Osram T5 fluorescent lamps offer decoration and illumination in a cost efficient package. They provide excellent luminous flux maintenance throughout their entire lifespan, meaning that the bulb will not become dimmer with repeated use. They also have good colour rendering and are dimmable.
Fluorescent tubes give off a brighter light than halogen bulbs. They have low running costs and a long lifespan so no need to worry about replacements making them suitable for a number of applications. When choosing a fluorescent tube the number of lumens (Im) is important as the higher the number of lumens the brighter the bulb will be. T5 fluorescent tubes also produce high levels of colour rendering and efficacy.

Fluorescent tubes contain mercury so you most dispose of these tubes safely as per regulation.

This range includes the following Fluorescent tubes with various wattage (14W, 21W, 28W and 35W), luminosity and colour temperature:

494-6691 – FH14835, 14 W, 1200 lm, 550mm, 3500K
494-6720 - FH1484, 14 W, 1200 lm, 550mm, 4000K
494-6736- FH2184, 21 W, 1900 lm, 850mm, 4000K
494-6742 - FH2884, 28 W, 2600 lm, 1150mm, 4000K
621-7737 - FH3584S, 35 W, 3300 lm, 1450mm, 4000K
621-7743 - FH35835S, 35 W, 3300 lm, 1450mm, 3500K
700-1372- FH28830, 28 W, 2600 lm, 1150mm, 3000K
700-1378 - FH21830, 21 W, 1900 lm, 850mm, 3000K
700-1381 - FH35830, 35 W, 3300 lm, 1450mm, 3000K


Good economy and efficiency
Up to 50 % smaller by volume than comparable T8 lamps and more energy efficient
Natural colours
Very good lumen maintenance >90% throughout the life of the lamp
Long average life time
Good colour rendering
G5 lamp base
Energy efficiency rating class A+

Product Applications:

Fluorescent tubes and lamps have always been popular in the workplace and at home as they are both cost effective and energy efficient. Some areas where fluorescent tubes are used are:
Public buildings
Supermarkets and department stores

Which colour temperature to pick?
Fluorescent tubes are available in a variety of colour temperatures which describes the light appearance provided by a light source. It is measured in degrees of kelvin (k) on a scale from 1,000 to 10,000:
2700 – warm white – ideal where relaxing and ambience lighting is needed
4000K – cool white – lighting ideal for a kitchen
+6000K – daylight – very sharp, lighting ideal for a working environment

Which cap size?
You need to have the correct cap size:
2Gx13 (U-shaped)
G13 (T8 and T12)
G5 (T5)

Fluorescent Triphosphor

Triphosphor tubes have longer life, a lower mercury content, better colour rendering and higher lumen maintenance than their Halophosphate counterparts. The tubes are available in a variety of colour temperatures from 3000K (warm white) to 6000K (daylight).

• Extended life expectancy which can be increased by upto 20,000 hours with the use of high frequency luminaires.
• Shatter resistant versions available which retain the fragments in the event of a breakage.
• Option of triphosphor tubes with internal reflectors, which reduce waste light and increase light output by up to 75%.
• 16mm (T5) tubes provide a compact alternative to T8 tubes, offering peak performance at +35 °C and typically provide 5% more efficiency in most ceiling applications when compared to equivalent T8 tubes.


Nominal tube diameter - T5=16mm, T8=26mm, T9=29mm, T12=38mm

Attribute Value
Wattage 21 W
Length Imperial 2.8ft
Length Metric 850mm
Lamp Size T5
Colour Temperature 3000K
Lamp Base G5
Colour Tone Warm White
Colour Reference 830
60 In Global stock for delivery within 4 - 6 working days
Price Each (In a Pack of 20)
Was MYR16.956
MYR 11.468
Per unit
Per Pack*
20 +
*price indicative
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