Philips Lighting Alto T5/T5 HO...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$17.79
Philips Lighting Alto T5/T5 HO Fluorescent Lamp Family

Philips Lighting Alto T5/T5 HO Fluorescent Lamp Family

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Model: 290833

In Stock (leaves warehouse same day if ordered before 3pm ET)

$17.79
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Philips Lighting Alto T5/T5 HO Fluorescent Lamp

The Philips Lighting Alto T5/T5 HO Fluorescent Lamp family covers linear fluorescent lamps built for commercial and industrial fixtures that require dependable, energy-efficient illumination in a compact bi-pin form factor. This lamp line is available in two configurations: a 14W - 3000K - 22-Inch T5 Standard option and a 54.1W - 4100K - 46-Inch T5 High Output option, giving contractors and facility managers a single trusted source for both standard and high-output T5 relamping needs. Every lamp in this family uses a 2-Pin G5 Miniature Base, delivers an 82 CRI for accurate color rendition, and is dimmable for integration with compatible dimming ballasts, so the fixture and control compatibility stays consistent whichever configuration you select.

Key Features

  • Configuration Range: Available from 14W - 3000K - 22-Inch (T5 Standard) up to 54.1W - 4100K - 46-Inch (T5 High Output), covering both standard and high-output fixture platforms.
  • Base Type: 2-Pin G5 Miniature Base for secure, standardized socket connection across the family.
  • Color Rendering: 82 CRI provides accurate color rendition for task, display, and general area lighting.
  • Dimmable: Dimmable design allows integration with compatible dimming ballasts for flexible light-level control.
  • Alto® Technology: Alto® lamp technology from Philips Lighting supports environmentally responsible lamp disposal characteristics.
  • Color Temperature Options: Choose from 3000K warm white for the T5 Standard configuration or 4100K cool white for the T5 High Output configuration.
  • Lamp Length Options: 22-Inch length for T5 Standard fixture channels or 46-Inch length for T5 High Output fixture channels.

Technical Specifications

  • Product Wattage: 54.1W
  • CRI: 82
  • Bulb Base: G5
  • Dimmable: Yes

Typical Applications

  • Commercial Office and Retail Lighting
  • High-Bay and Industrial Facility Lighting
  • Fixture Relamping and Retrofit Projects
  • Display and Task Lighting Requiring Accurate Color Rendering
  • Dimmable Lighting Control Systems

Why Philips Lighting?

Philips Lighting is a trusted name in commercial and industrial lighting, and the Alto® T5/T5 HO Fluorescent Lamp family reflects that reputation with consistent 2-Pin G5 base fit, 82 CRI color accuracy, and dimmable operation across both the 14W T5 Standard and 54.1W T5 High Output configurations. Electrical contractors and facility managers rely on Philips Lighting T5 lamps for dependable performance and fit across standard fixture platforms, whether relamping compact standard fixtures or high-output industrial fixtures.

Product Specs

Product Type:
Fluorescent Tube
Product Wattage:
54.1W
Light Temperature:
4100K
CRI:
82
Lumens:
5000
Bulb Base:
G5
Dimmable:
Yes
Series:
Alto
Department:
Electrical
Product Subgroup:
Lamps & Bulbs
list_batch:
PHIL-20260925
Product Group:
Lighting
Base:
G5 [ G5]

Philips Lighting 290833 – Frequently Asked Questions

1) Will a 54.1W T5 HO lamp work in a fixture that came with 14W T5 standard lamps?
No. Both Philips Alto T5 lamps use the same 2-pin G5 miniature base, but the 14W standard lamp is 22 inches long and the 54.1W high output lamp is 46 inches, so they will not sit in the same fixture channel. T5 standard and T5 HO also run on different ballasts. Match the lamp to the fixture's rated length, wattage, and ballast type, not just the base.
2) What is the closest T5 high output alternative to the Philips Alto 54.1W lamp from another brand?
The Sylvania Pentron HO Ecologic line is the T5 high output family to look at. The Philips Alto high output configuration is a 54.1W, 4100K, 46-inch lamp on a 2-pin G5 base with 82 CRI and dimmable operation; the Sylvania Pentron HO Ecologic comparable is a 24-watt T5 HO lamp, so it is a shorter-tube, lower-wattage member of the HO class rather than a watt-for-watt match for the 46-inch 54.1W tube. Confirm the fixture channel length and ballast rating before swapping between them.
3) Can Philips Alto T5 lamps be dimmed?
Yes, the Alto T5 and T5 HO lamps are dimmable, but dimming comes from the ballast, not the lamp. You need a dimming ballast rated for the specific lamp (14W T5 standard or 54.1W T5 HO) and a control compatible with that ballast. On a standard instant or programmed-start non-dimming ballast the lamps run at full output only.
4) Which color temperature should I pick for office and retail spaces, 3000K or 4100K?
3000K warm white reads warmer and is the usual pick for hospitality, retail display, and tenant spaces where you want a softer tone; on the Alto T5 line that is the 14W 22-inch standard lamp. 4100K cool white reads cleaner and whiter and is standard in offices, back of house, and industrial areas; that is the 54.1W 46-inch high output lamp. Both render at 82 CRI, so color accuracy is the same either way.
5) My fixture is a short U-tube troffer, not a straight channel. What should I order instead of a T5 Alto lamp?
A U-bend lamp is the right call there. The Philips Alto T5 family is straight linear tube only, in 22-inch and 46-inch lengths with a G5 base. For a U-tube troffer, the Sylvania 21878 FBO31/835 is a T8 U-tube rated 31W at 3500K, and the Sylvania 21879 Octron 800 Curvalume is a 31W T8 U-tube in the 800 series. Match the leg spacing and the existing ballast before ordering.
6) For a long industrial high bay run, is the 46-inch Alto T5 HO or a Sylvania 96-inch T8 the better fit?
It depends on the fixture channel you already have. The Philips Alto T5 HO lamp is a 54.1W, 46-inch, 4100K tube on a G5 base with 82 CRI and dimmable operation, suited to T5 HO strip and high bay housings. The Sylvania 22207 Octron 800 HO is a 96-inch T8 lamp, built for 8-foot T8 strip fixtures. The two are not cross-compatible; order to the socket type and channel length in the existing fixture.
7) How much light does the 54.1W Philips T5 HO lamp put out?
5000 lumens at 4100K. That is a cool white output suited to warehouse, high bay, and industrial bays where you want brightness and neutral color rather than warm tone.
8) Is 82 CRI good enough for retail display lighting?
82 CRI is the normal grade for commercial linear fluorescent and is fine for general office, task, and most retail area lighting. For merchandise where color fidelity sells the product, such as paint, apparel, or fresh food, buyers usually specify 90-plus CRI. If your drawing calls out 85 CRI or higher, the Alto T5 at 82 will not meet it.
9) If I need a warmer light than 4100K in a T5, what are my options?
Within the Philips Alto T5 family, the 14W 22-inch T5 Standard lamp is 3000K warm white, while the 54.1W 46-inch T5 HO lamp is 4100K. Among the T5 comparables, the Sylvania Pentron HO Ecologic 24-watt lamp is the other T5 option to spec against. All Philips Alto T5 configurations share the G5 base and 82 CRI, so color temperature is the variable, not fit.
10) What does the Alto designation on these Philips fluorescent lamps mean?
Alto is Philips' lamp technology line associated with environmentally responsible disposal characteristics. For a facility buyer it matters mainly at end of life and for standardizing a relamp spec across a building; it does not change the electrical or physical fit, which is set by the G5 base, the lamp length, and the ballast.
How fast can I get the Philips Lighting 290833 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Philips Lighting 290833 come with a warranty?
Absolutely. The Philips Lighting 290833 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Philips Lighting 290833?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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