SATCO Lighting S18450 13W T8 U-Bend LED, 50000 Hours, Medium bi-pin Base, 1800 Lumens, 3000K, Type A/B, Ballast Dependant or Ballast Bypass

Either way. The S18450 is a Type A/B hybrid: it will operate on an existing electronic ballast (Type A) or you can bypass the ballast and wire line voltage direct to the sockets (Type B). Bypass wiring can be single-ended or double-ended. Current draw is .15A on an electronic ballast and .12A in bypass mode, so the retrofit path is yours to choose when the ballast fails rather than a reason to buy a different lamp.

The S18450 is a T8 U-bend lamp with a medium bi-pin base, the same base used on standard T8 fluorescent tubes, and it measures 22.5 inches in length. That is the usual arrangement for 2x2 troffers that currently hold FB32T8 U-bend fluorescents. Burning position is universal, so it can go in flat-lens troffers, wraps, or strips in any orientation.

The S18450 draws 13 watts and puts out 1800 lumens at 3000K with 80 CRI. Satco rates it as a 50W incandescent equivalent. In a two-lamp 2x2 troffer that is 3600 lumens total, which reads as a warm, lower-output level than a pair of 32W fluorescent U-tubes. If you need to hold the existing light level, step up to a higher-lumen U-bend; if the space is over-lit or you are chasing energy savings, 13W per lamp is a large reduction.

It is an enclosed rated lamp, so it can be installed in a sealed or gasketed fixture without voiding the thermal rating, which is not true of every LED tube. Location rating is damp, so covered exterior soffits, garages, and commercial kitchens are in scope. It is not rated for wet locations or direct water exposure.

A Type A/B lamp like the S18450 gives you both paths: drop it into the existing electronic ballast now for a no-rewire install, then bypass the ballast later when it fails and keep the same lamp. A Type B only lamp forces you to pull the ballast and rewire the sockets up front, which means an electrician on every fixture but removes the ballast as a future failure point. For large property portfolios where crews swap lamps without touching wiring, the A/B hybrid is the lower-labor choice.

120V through 277V, at 50/60Hz. That covers 120V residential and light commercial circuits as well as 277V commercial lighting branch circuits, so the same lamp works across mixed-voltage buildings when wired in bypass mode.

Yes on both counts as stated by Satco: the S18450 is DLC approved, which is what most utility prescriptive rebate programs require for linear LED replacement lamps, and it is listed as Title 24 compliant. It is also FCC compliant.

The S18450 is fixed at 3000K, a warm white, with no field-selectable color temperature. If the rest of your fixtures are 3500K or 4000K, the difference will be visible side by side in the same room, so standardize by floor or by space rather than mixing within one area. CRI is 80 and the lens is frosted plastic, which diffuses the diodes so you do not see individual points of light through an open troffer.

Beam spread is 160 degrees, so output is directional out one face of the lamp rather than the full 360 degrees a glass fluorescent U-tube emits. In a troffer that means more light pushed down through the lens and less wasted up into the reflector, but it also means orientation of the lamp in the socket affects where the light goes. Rotate the pins so the lens faces the room.

No. The S18450 is not a three-way lamp, and no dimming capability is given for it. Treat it as a full-output lamp on a standard switched or occupancy-sensor controlled circuit. If the space needs dimming, specify a lamp or an LED troffer retrofit kit with a stated 0-10V or TRIAC dimming driver instead.

Average rated life is 50,000 hours. On a 12-hour-a-day office or school schedule that is well over a decade of service, which is why MRO and facilities buyers use these to get off an annual or biennial fluorescent relamp cycle. The lamp body is plastic with a white housing and weighs 0.5 lb, so there is no glass to break during handling or disposal.