T10 fluorescent bulbs

T10 fluorescent bulbs DEFAULT

Fluorescent-lamp formats

For other types of lightbulb mounts and sockets, see Lightbulb socket.

Fluorescent lamps in various embodiments

Since their introduction as a commercial product in 1939, many different types of fluorescent lamp have been introduced. Systematic nomenclature identifies mass-market lamps as to overall shape, power rating, length, color, and other electrical and illuminating characteristics.

Tube designations[edit]

Lamps are typically identified by a code such as FxxTy, where F is for fluorescent, the first number (xx) indicates either the power in watts or length in inches, the T indicates that the shape of the bulb is tubular, and the last number (y) is the diameter in eighths of an inch (sometimes in millimeters, rounded-up to the nearest millimeter). Typical diameters are T12 or T38 (1+1⁄2 in or 38 mm) for residential lamps with magnetic ballasts, T8 or T26 (1 in or 25 mm) for commercial energy-saving lamps with electronic ballasts, and T5 or T16 (5⁄8 in or 16 mm) for very small lamps, which may even operate from a battery-powered device.

Designation Tube diameter Extra
(in)(mm) Socket Notes
T2 1⁄4 approx. 7 WP4.5×8.5d Osram'sFluorescent Miniature (FM) tubes only

Sylvania Luxline Slim T2 Linear

T4 1⁄212.7 G5 bipinSlim lamps. Power ratings and lengths not standardized (and not the same) between different manufacturers
T5 T16 5⁄815.9 G5 bipin Original 4–13 W range from 1950s or earlier.[1]
Two newer ranges high efficiency (HE) 14–35 W, and high output (HO) 24–80 W introduced in the 1990s[2]
T8 T26 1 25.4 G13 bipin/single pin/recessed double contact From the 1930s,[3] more common format since the 1980s.[4]
T9 T29 1+1⁄828.6 G10q quadpin contact Circular fluorescent tubes only
T10 1+1⁄431.75 G13 bipin
T12 T38 1+1⁄238.1 G13 bipin/single pin/recessed double contact Also from the 1930s, not as efficient as new lamps.[5]
T17 2+1⁄854 G20 Mogul bipin Large size for F90T17 (preheat) and F40T17/IS (instant start)
PG17 2+1⁄854 R17d Recessed double contact General Electric'sPower Groove tubes only

For T2–T12 and T17, the number indicates the tube diameter in 1⁄8 inches, e.g. T2 → 2⁄8 in and T17 → 17⁄8 in. Whereas for T16 and T26–T38, the number indicates the approximate tube diameter in millimeters.

Reflectors[edit]

Cross section of a typical fluorescent lamp with and without a reflector

Some lamps have an internal opaque reflector. Coverage of the reflector ranges from 120° to 310° of the lamp's circumference. Often, a lamp is marked as a reflector lamp by adding the letter "R" in the model code, so a F##T## lamp with a reflector would be coded as "FR##T##". Very high output (VHO) lamps with reflectors may be coded as VHOR. No such designation exists for the amount of reflector coverage the lamp has.

Reflector lamps are used when light is only desired to be emitted in a single direction, or when an application requires the maximum amount of light. For example, these lamps can be used in tanning beds or in backlighting electronic displays. An internal reflector is more efficient than standard external reflectors. Another example is color matched aperture lights (with about 30° of opening) used in the food industry for robotic quality control inspection of cooked goods.

Aperture lamps have a clear break in the phosphor coating, typically of 30°, to concentrate light in one direction and provide higher brightness in the beam than can be achieved by uniform phosphor coatings. Aperture lamps include reflectors over the non-aperture area. Aperture lamps were commonly used in photocopiers in the 1960s and 1970s where a bank of fixed tubes was arranged to light up the image to be copied, but are rarely found nowadays. Aperture lamps can produce a concentrated beam of light suitable for edge-lit signs.

Slimline lamps[edit]

Slimline lamps operate on an instant start ballast and are recognizable by their single-pin bases.

High output/very high output lamps[edit]

High-output lamps are brighter and are driven at a higher electric current, have different ends on the pins so they cannot be used in the wrong fixture, and are labeled F##T##HO, or F##T##VHO for very high output. Since about the early to mid-1950s to today, General Electric developed and improved the Power Groove lamp with the label F##PG17. These lamps are recognizable by their large diameter (2+1⁄8 in or 54 mm), grooved tube shape and an R17d cap on each end.

Other tube shapes[edit]

U-shaped tubes are FB##T##, with the B meaning "bent". Most commonly, these have the same designations as linear tubes. Circular tubes are FC##T#, with the outer diameter of the circle (notcircumference or watts) in centimeters (inches in North America) being the first number, and the second number referring to the tube size as with linear ones.

Colors[edit]

Color is usually indicated by WW for warm white, EW for enhanced (neutral) white, CW for cool white (the most common), and DW for the bluish daylight white. BL is used for ultraviolet lamps commonly used in bug zappers. BLB is used for blacklight-blue lamps employing a Wood's glass envelope to filter out most visible light, commonly used in nightclubs. Other non-standard designations apply for plant lights or grow lights.

Philips and Osram use numeric color codes for the colors. On tri-phosphor and multi-phosphor tubes, the first digit indicates the color rendering index (CRI) of the lamp. If the first digit on a lamp says 8, then the CRI of that lamp will be approximately 85. The last two digits indicate the color temperature of the lamp in kelvins (K). For example, if the last two digits on a lamp say 41, that lamp's color temperature will be 4100 K, which is a common tri-phosphor cool white fluorescent lamp.

Halophosphate tubes
Numeric color code Color Approximate CRI Color temperature (K)
29 Warm white ≈52 3000
35 White ≈56 3500
33 Daylight/Cool White ≈66 4300
25 Natural/Universal White ≈75 4000
54 Tropical Daylight ≈75 6500
Deluxe halophosphate tubes
Numeric color code Color Approximate CRI Color temperature (K)
27 Deluxe Extra Warm White ≈95 2700
32 Deluxe Warm White ≈85 3000
34 Deluxe White ≈85 3850
79 Deluxe Natural ≈93 3600
38 Deluxe Cool White/°Kolor-rite ≈92 4000
55 Northlight/Colour Matching ≈94 6500
Tri-phosphor tubes
Numeric color code Color Approximate CRI Color temperature (K)
827 Warm white ≈85 2700
835 White ≈85 3500
840 Cool white ≈85 4000
850 Sunlight ≈85 5000
865 Cool daylight ≈85 6500
880 Skywhite ≈85 8000
Multi-phosphor tubes
Numeric color code Color Approximate CRI Color temperature (K)
927 Warm white ≈95 2700
941 Cool white ≈95 4100
950 Sunlight ≈98 5000
965 Cool daylight ≈95 6500
Special purpose tubes
Numeric code Fluorescent

lamp type

Notes
05 Germicidal lampsNo phosphors used at all,

using an envelope of fused quartz.

08 Black-light lamps
09 Sun-tanning lamps

Common tube ratings[edit]

This section lists the more common tube ratings for general lighting. Many more tube ratings exist, often country-specific. The Nominal Length may not exactly match any measured dimension of the tube. For some tube sizes, the nominal length (in feet) is the required spacing between centers of the lighting fixtures to create a continuous run, so the tubes are a little shorter than the nominal length.

Tube diameter in 1⁄8 in (3.175 mm)Nominal lengthNominal power (W)
T5 6 in (152 mm) 4
T5 9 in (229 mm) 6
T5 12 in (305 mm) 8
T5 21 in (533 mm) 13
T8 14 in (356 mm) 14,15
T8 2 ft (610 mm) 18
T8 3 ft (914 mm) 30
T8 4 ft (1,219 mm) 36
T8 5 ft (1,524 mm) 58
T8 6 ft (1,829 mm) 70
T12 14–14.5 in (356–368 mm) 14,15
T12 16.5 in (419 mm) 15
T12 2 ft (610 mm) 20
T12 4 ft (1,219 mm) 40
T12 5 ft (1,524 mm) 65, 80
T12 6 ft (1,829 mm) 75, 85
T12 8 ft (2,438 mm) 125

European energy-saving tubes[edit]

In the 1970s, Thorn Lighting introduced an energy-saving 8 ft retrofit tube in Europe. Designed to run on the existing 125 W (240 V) series ballast but with a different gas fill and operating voltage, the tube operated at only 100 W. Increased efficiency meant that the tube produced only 9% lumen reduction for a 20% power reduction.[6] This first energy-saving tube design remains a T12 tube even today. However, follow-on retrofit replacements for all the other original T12 tubes were T8, which helped with creating the required electrical characteristics and saving on the then new (and more expensive) polyphosphor/triphosphor coatings, and these were even more efficient. Note that because these tubes were all designed as retrofit tubes to be fitted in T12 fittings running on series ballasts on 220–240 V supplies, they could not be used in 120 V mains countries with inherently different control gear designs.

TypeDiameter (in, mm)Nominal length (ft, m)Nominal power (W)Notes
T81.0, 252, 0.618Retrofit replacement for 2 ft T12 20 W
T81.0, 254, 1.236Retrofit replacement for 4 ft T12 40 W
T81.0, 255, 1.558Retrofit replacement for 5 ft T12 65 W
T81.0, 256, 1.870Retrofit replacement for 6 ft T12 75 W
T121.5, 388, 2.4100Retrofit replacement for 8 ft T12 125 W

Around 1980 (in the UK, at least), some new fluorescent fittings were designed to take only the newer, retrofit tubes (the lamp holders are designed not to take T12 tubes, except for 8 ft length). The earlier T12 halophosphate tubes still remained available as spares until 2012. They fit in older fittings and some modern fittings that employ twist lock lamp holders, even though the modern fittings were not electrically designed for them.

US energy-saving tubes[edit]

In the 1990s,[citation needed] various energy-saving tubes were introduced in North America, but unlike the T8 tubes introduced in Europe, the T8s are not retrofits and require new matching ballasts to drive them, while some T12s can use the older ballasts. Running a T8 tube with a ballast for T12 will reduce lamp life and can increase energy consumption.[7] Conversely, a T12 tube on a T8 ballast will usually draw too much power and so may burn out the ballast, unless it is within the range that the particular model of electronic ballast can compensate for. The tube type should always match the markings on the light fixture.

TypeDiameter (in, mm)Nominal length (ft)Nominal power (W)Notes
T121.5, 38217
T121.5, 38434
T121.5, 38540
T121.5, 38859
T81.0, 25425Shoplite

T5 tubes[edit]

In the 1990s, longer T5 tubes were designed in Europe (making it to North America in the 2000s), in addition to the shorter ones (mentioned above) already in use worldwide. Like the European modular furniture, display cabinets, ceiling tile grids, etc. they were designed for, these are based on multiples of the 300 mm (11.8 in) "metric foot" instead of the 12 in (305 mm) imperial foot, but are all 37 mm (1.5 in) shorter to allow space for the lampholder connections within the 300mm modular units, and for much easier insertion into and removal from troffer lights within the grid.

Tube diameter is 5⁄8 in (15.875 mm) Length Nominal power (W) Notes
High-efficiency High output
T5 563 mm (22.2 in) 14 24 Fits within a 0.6 m modular unit
T5 863 mm (34.0 in) 21 39 Fits within a 0.9 m modular unit
T5 1,163 mm (45.8 in) 28 54 Fits within a 1.2 m modular unit
T5 1,463 mm (57.6 in) 35 80, 49 Fits within a 1.5 m modular unit

The T5 diameter is nearly 40% smaller than T8 lamps and almost 60% smaller than T12 lamps. T5 lamps have a G5 base (bi-pin with 5 mm spacing), even for high-output (HO and VHO) tubes.[8]

See also[edit]

References[edit]

Sours: https://en.wikipedia.org/wiki/Fluorescent-lamp_formats

How to Replace T12 With T10 Fluorescent Tubes

Smaller tubes will use less power for a comparable amount of light.

Step 1

Turn the light off and let it cool for a few minutes.

Step 2

Get on the ladder and remove the cover to your fluorescent light fixture. Each fixture will have a different way to access it, but most will have a latch on one side that holds the cover in place. Flip the latch and the cover will swing down. Other covers wrap around the fixture, and you will have to pry the cover off of the sides.

Step 3

Grab the T12 light that you want to remove and twist it until you can see a metal contact in one of the slots at the end of the light. Pull down on the fluorescent light to remove it from the slot. Once the first contact is out, you may need to wiggle it a little to get the second one out.

Step 4

Remove the T12 fluorescent light from the fixture. On some fixtures, you may need to insert the contacts on one end of the light into small holes on the side of the fixture to be able to swing the other end down. You can then remove the light from the fixture.

Step 5

Bring your T10 tube up to the fixture. Place one of the contacts directly underneath each slot on the ends of the fixture. If you had to angle the T12 tube to get it out of the fixture, you will have to do the same to get the T10 light in.

Step 6

Push up on the T10 light to force the contacts into the slot, then rotate the tube to lock it into place.

Sours: https://homesteady.com/how-7895618-replace-t12-t10-fluorescent-tubes.html
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Is It OK to Use T8 LED Tubes to Replace the Old T10/T12 Tubes?

The T8, T10 and T12 tubes are mainly difference in the diameter of the tube.

The main difference is in size…the T8 is one inch in diameter and everything else is divisible by that number:  T5 = 5/8 inch, T6 = 6/8 inch, T8 = 1 inch, T10 = 1.25 inches (10/8), T12 = 1.5 inches in diameter (12/8).

They are available in same lengths and same base types.

Usually the old T10 and T12 tubes, are comes in 8ft with Fa8 or R17d base, instead of G13 bi-pin base.

Now the LED Tubes T8 are available for all those base and 8ft, and also 2ft, 3ft, 4ft, 5ft, 8ft too.

So it's quite convenient to use a T8 LED Tube to replace the old T10 and T12 tubes.

While the size is the main difference there are other differences that are worth mentioning.

In general, T8 use electronic ballasts while T12 use magnetic ballasts. Opening the fixture and examining the ballast will give you the ultimate answer as to what type of ballast you have;

but, in general, the older the fixture, the more likely it is to have a magnetic ballast. You can purchase the ballast-compatible LED Tubes if do not want to make any change in your old tube fixtures.

Or to save cost, to buy the ballast by-pass LED Tubes, which will need to change wire in the tube fixture to by-pass the wire to the old ballast.

Please follow the page : https://www.led-lights.com/how-to-replace-an-old-fluorescent-tube-with-led-tube-light-a-10

One more point need to emphasize. The T12 old tubes, the T12 sockets of the "Non-Shunted Rapid Start" type, which require the tubes to be single-end power feed type.

There are single-end power feed and dual-end power feed tube, most of the LED T8 tube are default to be dual-end power feed type.

So when you use the T8 to replace the T12, please double-check about the power feed types of your old tubes.

,

5FT Line Voltage AC Bi-Pin G13 Base T8 LED Tube Light - E10012

LL-FSKU Rated Wattage Beam Angle Diameter Dimming Retrofit Material Fluorescent Equ. Driver Type Certification Price
LL-T8-PC-5FT 22W270°26mmNon-DimmableBallast By-passAll Plastic54WLinear DriverCE RoSH FCC$3.54-$5.06
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*Linear Driver
*100lm/W
*CRI>80
*LED: Gold Wire, Copper Support
*Warranty:24 Months

Price:
Quality:
Composite:
Comment by Product Specialist: See Detail

* This Tube is made with Plastic Housing, heat dissipation is not good as housing with the aluminum base.
* With medium luminous efficiency, which satisfies all general lighting need
* With above average color rendering index which qualifies for most of the applications with accurate color need to seem.
* Suitable for general lighting for home, shop, school, office, studio, and food market.
* In the same optical function level, this tube is the most price competitive model.


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Lead Time.: 5-10 Days
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Lead Time.: 15-30 Days
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LL-T8-AP-5FT 25W160°26mmNon-DimmableBallast By-passAluminum + Plastic60WNon-isolated DriverCE RoSH FCC$5.06-$7.24
BrandIndividual ParametersRating & CertificationSelling ChannelWearhouse Location & ShippingMOQ/VIPMOQPricingBuy Now

* Non-isolated Driver
* PF>0.6
* 100lm/w
* CRI>80
* LED: Gold Wire,Copper Support
* Warranty:24 Months

Price:
Quality:
Composite:
CE RoHS FCC
Comment by Product Specialist: See Detail

* Non-isolated Driver
* PF>0.6
* 100lm/w
* CRI>80
* LED: Gold Wire,Copper Support
* Warranty:24 Months


Retail Ship from China
Lead Time.: 5-10 Days
Shipping Time.: 7-12 Days via Airfreight
30/30$7.24/ea.

Add To Cart

Wholesale Ship from China
Lead Time.: 15-30 Days
Shipping Time.: 20-35 Days via Seafreight
5000/4000$5.06/ea.

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LL-T8-AP-5FT-BC 25W160°26mmNon-DimmableBallast CompatibleAluminum + Plastic60WNon-isolated DriverCE RoSH FCC$6.89-$9.84
BrandIndividual ParametersRating & CertificationSelling ChannelWearhouse Location & ShippingMOQ/VIPMOQPricingBuy Now

*Ballast-Compatible
*Non-isolated Driver
*PF>0.9
*100lm/w
*CRI>80
*LED: Gold Wire,Copper Support
*Warranty:24 Months

Price:
Quality:
Composite:
CE RoHS FCC
Comment by Product Specialist: See Detail

* Made with Aluminum+PC Housing, it has good performance in heat dissipation
* With medium luminous efficiency, which satisfies all general lighting need
* With above average color rendering index which qualifies for most of the applications with accurate color need to seem.
* Suitable for general lighting for home, shop, school, office, studio, and food market.
* In the same optical function level, this tube is the most price competitive model.


Retail Ship from China
Lead Time.: 5-10 Days
Shipping Time.: 7-12 Days via Airfreight
60/60$9.84/ea.

Add To Cart

Wholesale Ship from China
Lead Time.: 15-30 Days
Shipping Time.: 20-35 Days via Seafreight
5000/4000$6.89/ea.

Add To Cart

LL-T8-AP-5FT-D 25W160°26mmDimmableBallast By-passAluminum + Plastic60WNon-isolated DriverCE RoSH FCC$7.7-$10.99
BrandIndividual ParametersRating & CertificationSelling ChannelWearhouse Location & ShippingMOQ/VIPMOQPricingBuy Now

*TRIAC/PHASE Dimming
*Non-isolated Driver
*PF>0.9
*100lm/w
*CRI>80
*LED: Gold Wire,Copper Support
*Warranty:24 Months

Price:
Quality:
Composite:
CE RoHS FCC
Comment by Product Specialist: See Detail

* Made with Aluminum+PC Housing, it has good performance in heat dissipation
* With medium luminous efficiency, which satisfies all general lighting need
* With above average color rendering index which qualifies for most of the applications with accurate color need to seem.
* Suitable for general lighting for home, shop, school, office, studio, and food market.
* In the same optical function level, this tube is the most price competitive model.


Retail Ship from China
Lead Time.: 5-10 Days
Shipping Time.: 7-12 Days via Airfreight
60/60$10.99/ea.

Add To Cart

Wholesale Ship from China
Lead Time.: 15-30 Days
Shipping Time.: 20-35 Days via Seafreight
5000/4000$7.7/ea.

Add To Cart

LL-T8-AP-5FT-UL 22W160°26mmNon-DimmableBallast By-passAluminum + Plastic60WIsolated/Non-isolated DriverUL CE RoSH FCC$8.89
BrandIndividual ParametersRating & CertificationSelling ChannelWearhouse Location & ShippingMOQ/VIPMOQPricingBuy Now

*UL CUL DLC Approved
*Type B ( Ballast by-pass and Single-end power Feed) *Non-isolated Driver
*PF>0.9
*130lm/w
*CRI>80
*LED: Gold Wire,Copper Support
*Warranty:36 Months

Price:
Quality:
Composite:
UL CUL
Comment by Product Specialist: See Detail

* Made with Aluminum+PC Housing, it has good performance in heat dissipation
* With high luminous efficiency, which satisfies all general lighting need and application with super brightness need
* With above average color rendering index which qualifies for most of the applications with accurate color need to seem.
* Suitable for residential, commercial and industrial lighting for home, shop, school, office, studio, sports halls, airport, hospital etc.


Wholesale Ship from China
Lead Time.: 15-30 Days
Shipping Time.: 20-35 Days via Seafreight
5000/4000$8.89/ea.

Add To Cart

Sours: https://www.led-lights.com/is-it-ok-to-use-t8-led-tubes-to-replace-the-old-t10-t12-tubes-a-12
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