SATCO Lighting S49993 10W, 3 Foot LED T8, Medium Bi Pin Base, 5000K, 50000 Avg Rated Hours, 1450 Lumens, Type A, Ballast dependent

The S49993 is a Type A, ballast dependent lamp. It runs off the existing fluorescent ballast in the fixture, so you drop it into the sockets with no rewiring. If the ballast fails later, the lamp stops working until the ballast is replaced. Crews that want to get rid of the ballast entirely need a Type B direct wire lamp instead, not this one.

5000K is a cool, daylight-white light with no yellow cast, common in warehouses, shops, garages, parking structures and back-of-house areas. It will not visually match 3500K or 4100K tubes in the same open space, so if your existing lamps are neutral white, expect an obvious difference in a shared ceiling. Standardize by color temperature room by room rather than mixing.

No. In a multi-lamp fixture, run all lamps on a ballast as either LED or fluorescent, not a mix. Because the S49993 is ballast dependent, it shares the ballast output with whatever else is in that channel, and mixing lamp types gives you inconsistent output and unpredictable starting. Replace the full fixture's worth at once.

Rated at 50,000 average hours. On a 12-hour-a-day schedule that is over 11 years of service, which is why MRO and facility buyers use Type A LED tubes to get relamping out of the annual cycle. Keep in mind that with a ballast dependent lamp, the ballast is now the shorter-lived component in the fixture.

Order it as Satco S49993. The tube has a gloss white diffuser finish, which is the standard coated look for a T8 lamp and gives an even glow rather than a visible diode line. One configuration, no length or color options to specify.