Philips Lighting 550459 8.8A19/PER/950/P/E26/DIM 6/1FB T20

Yes. The 550459 is an 8.8W A19 rated as a 60W equivalent, putting out 800 lumens on 120V through a standard E26 medium screw base. It drops into any socket that took the old 60W bulb, and it lights instantly with a 0.5 second start.

No, it won't match warm white. The 550459 is a 5000K daylight lamp (color code 950), which reads crisp and blue-white next to the 2700K to 3000K warm bulbs used in most residential fixtures. If you're relamping a corridor or unit where the existing lamps are warm, mixing these in will be obvious. Where 5000K is the right call, the 90 CRI and tight color consistency (under 4 SDCM) mean lamp-to-lamp color looks even across a run.

It dims, but only on leading edge (TRIAC) dimmers. Philips lists this lamp as dimmable on leading edge dimmers and publishes a compatibility list at philips.com/ledtechguide. On a compatible dimmer it runs smoothly down to about 10 percent of full output. If your building is on trailing edge or older incandescent-only rheostat-style controls, check the lamp against the compatibility list before you commit to a full relamp, since flicker and drop-out at the low end are the usual failure mode.

The lamp carries a 15,000 hour nominal lifetime rating, at which point it still delivers 70 percent of its initial light output. It's also rated for 50,000 switching cycles, so it holds up in spaces that get switched frequently, like restrooms, stairwells, and closets, where cheaper LED lamps tend to fail on the driver rather than the diodes.

The spec to watch is the maximum case temperature, which is 90 degrees C. Enclosed globes, sealed jelly-jar fixtures, and tight recessed cans trap heat and can push an LED past its case rating, which shortens driver life. In an open fixture, a lamp holder, or a well-ventilated can, you're within the design envelope. Also worth noting: the lamp emits virtually no UV or IR in the beam, so it doesn't add radiant heat to whatever it's pointed at.

It's an omnidirectional A19 with a 250 degree nominal beam angle, so it spreads light much like the incandescent it replaces. That makes it workable in table lamps, sconces, pendants, and open ceiling fixtures where a narrow-beam LED would leave dark spots. The frosted bulb finish diffuses the source so you don't see hot spots through a shade.

The manufacturer part number is 550459, ordering code 8.8A19/PER/950/P/E26/DIM 6/1FB T20. Reading the code: 8.8W A19 bulb shape, PER for the remote phosphor construction, 950 for 90 CRI at 5000K, E26 medium base, DIM for dimmable. Philips also builds this platform in 12.5W A19 and 17W A21 versions if you need more output on the same base.

It is EU RoHS compliant and contains no mercury, so it doesn't fall under the fluorescent lamp disposal handling that CFLs and linear tubes require. For institutional and government facilities tracking hazardous waste streams, that removes the lamp from mercury-bearing disposal procedures entirely.

Philips lists the 8W A19 and 12.5W A19 lamps in this family as ENERGY STAR qualified. If an ENERGY STAR listing is a hard requirement for a rebate program or a spec on the drawing, verify the qualification against the exact ordering code 8.8A19/PER/950/P/E26/DIM, since qualification is granted per specific lamp code rather than per family.

It emits virtually no UV or IR in the beam, so it won't fade colors or contribute to inventory spoilage the way a halogen or incandescent display lamp does. Paired with 90 CRI and 5000K daylight color, it's aimed at retail, hotel, restaurant, multi-unit residential, and government applications where merchandise or finishes need to read accurately under light.