Tube Led Philips Corepro T8 18-36W 4000K 1600 Lm

Consumption: 18W (measured 17.3W)

Energy rating: A

Equivalence: 36W

Lumens: 1600

Color: 4000K

Angle: 140 °

Power factor: > 0.9 (measured 1.0)

CRI: 80

Adjustable: No

Swivel: not

Dimensions: 1200 mm x 26 mm

Long opal diffuser: 119.4 cm

Duration: 30000 hours (50000 ignitions)

Price: €20.56

Source: Lamparadirecta (China)

This is the first led tube of the Philips brand that I try. It is bought in lamparadirecta and has a 3 year warranty.

It comes in a cardboard sleeve and with a few “” plastic caps that protect the pins at both ends.

In addition it comes with a paper with instructions and a sticker to place on the luminaire and alert that it has been modified to to not put a normal fluorescent (in the event that we recableemos it or remove the ballast)

This tube is that are fed by the same end that is marked by EM/MAINS.

Fuse or “led starter” is a sachet of bubbles within a box magazine (on the one hand removed the tube and the other fuse).

It is built entirely in plastic (less the inner part of the sink which must be aluminum)

When turned on you can see that the sink occupies almost half of the tube and seems to be composed of several strips of aluminum “hex”, occupying a larger surface area than other tubes of SevenOn or Osram where looked simply strip of leds glued inside of tube-shaped.

This increases the contact surface with the air and helps keep refrigerated leds.

Range of Philips led tubes

This Philips led tube is part of the range “Corepro” or economic, which is to say we can expect similar benefits to other market 18W led tubes and about 1600 lumens.

If we want something that stands out with regard to other brands we have to look at the rest of ranges having Philips where if we find features that are seldom seen in the majority of led “unbranded” tubes.

For example in the range “Value” or “High flow” Philips, there are other models that give the same light tube 18W but spending only 14.5W, and also there are others giving a greater amount of light spending 20W and 40000 hours:

Led tube Philips Value 14.5W 1600 lumens

Led tube Philips Value 16.5W 1600 lumens

Led tube Philips Value 20W 2100 lumens

There is also a range of “Ultra-Output” or “Ultra flow” which is the largest number of lumens/wattio manages to obtain an energy rating A ++.

Unique tubes comparable with these leds are Osram Advanced range getting with 18.4W 2300 lumens (although I think recently I saw some 22 or 23W also giving 2500 lumens).

Tube led Philips Ultra Output 20W 2500 lumens

And finally range “Performance” or “Long-term”, something to increase consumption and reducing the amount of light with respect to the series a bit Value getting to lengthen the life of the tube to the50000 hours:

Led tube Philips Performance 21W 1900 lumens


Measures of consumption have given me slightly below the indicated 18W and the power factor has given me a value of 1 (the actual value will surely be above 0.95), which indicates that electronics riding seems quality as you would expect from this brand.

In addition does not produce any interference if plugged it into the same outlet as the radio: the radio sound is heard exactly equal if we turn on the tube; Another point that indicates that the electronics is good.

With regard to operating, after half an hour on temperature is maintained between about 28 ° C and 29 ° C (measured with infrared gun), although measuring probe for contact at some point reaches 33 ° C.

They are comparative very low temperatures that reach led bulbs, so I see no problem to hold 24 hours per day on non-stop and I think that it can last the 30000 hours which indicates Philips.

With respect to the amount of light that gives, in the ranking of bulbs would be tied with other tubes 18W and 1600 lumens, as for example the of SevenOn, giving 76% of light that gives a fluorescent tube 36W Philips, so it not it would be indicated to replace a fluorescent if we want to maintain the same amount of light that we had before.

Amortization of the tube

In “intensive” use of 20 starts per day with only 2.7 hours/day (1000 hours/year), tube only represents a savings of more than €9 after nearly 7 years.

In contrast for a continuous use of 24 hours a day, pays for itself in half a year and Yes means significant savings:

However should take into account that does not give exactly the same amount of a fluorescent light, so although it represents a saving also represents a loss of approximately 24% of light intensity.

Also the last time that I entered on the web site of lamparadirecta already were not available all models of this range of tubes, indicating that they are liquidating the stock and better to choose a more modern and efficient the following Value range.

Opening the tube

Taking advantage of that I bought a few new precision screwdrivers, I decided to open it to see how a Philips tube on the inside is built:

East the hole where there is to take out the screw that holds each end:

Pulling the opal diffuser carefully separate it from the end:

As expected the driver good tine paints and occupies around one end of the tube:

And at the end by where no feeds the two pins are interconnected by a resistor and not simply bridged:

Detail of the aluminium diffuser good-sized carrying inside:

And the insulation on the back side of the strip of leds:

And leds:

They are not the typical smd 2835 riding tubes most currently:

Mounted 34 leds leds with 2 strips each: total 68 leds, nor anything to do with the typical 96 smd leds mounted the majority of tubes.

And with this I just show how Philips tubes have little to do in how they are made compared with the majority of tubes “unbranded” leds.

Is it worth paying double for a Philips tube? Well, I think that if taking into account the quality and components that mounts, but most people opt to only look at the price and buy the cheapest one that…