Type A Linear LED Tubes (Ballast Compatible)
Type A LED tubes are fluorescent ballast compatible LED linear lamps, also known as Plug & Play lamps. These tubes use your existing ballast and function as traditional lamps with three power settings controlled by the ballast: Low Power (LP), Normal Power (NP), and High Power (HP).
Benefits: Control, safety, and simple installation. Type A tubes replace existing fluorescent lamps without rewiring, making them safer than Type B alternatives. However, not all ballasts are compatible—check manufacturer compatibility lists before installation, especially for older fixtures.
Type B Linear LED Tubes (Ballast Bypass)
Type B LED tubes are ballast bypass lamps with built-in drivers, also called line voltage lamps. They wire directly to power, eliminating the ballast entirely.
Benefits: Lower cost and reduced maintenance. Type B is the most popular option due to affordability. Important: These are the most dangerous type—they require ballast removal and direct wiring to non-shunted sockets. Always mark fixtures with directly wired lamps to prevent electrical shock or fire hazards during future maintenance.
Type C Linear LED Tubes (External Driver)
Type C LED tubes use externally mounted drivers installed like traditional ballasts. They offer programmable outputs, dimming capabilities, and extended lifespan.
Benefits: Premium dimming and longevity. Type C is the least popular due to higher cost—consider LED module systems as an alternative for advanced applications.
Type A+B Linear LED Tubes (Hybrid Ballast Compatible & Bypass)
Type A+B LED tubes work with or without ballast, formerly known as Type D or "combo tubes." Install as Plug & Play with existing ballasts or remove the ballast for direct wiring.
Benefits: Maximum flexibility and safety. Reduce installation complexity and adapt to either ballast-compatible or ballast-bypass fixtures. Verify ballast compatibility before installation.
Shop LED Tubes at LeanLight
LeanLight offers premium LED tubes from Keystone Technologies and Sylvania: