An R7s bulb is a double ended, recessed single contact (RSC) linear lamp. The R7s is the base designated for J type linear halogen lamps having a T3 shape. The tubular shape of the bulb is 3/8 inches in diameter and the length measures either 118 mm or 78 mm. Some less common lengths are 189 mm, 254 mm and 331 mm. The J type halogen lamps of different sizes and voltages are found in variety of applications. They’re used in flood lighting system for both indoor and outdoor applications, stage and studio lighting systems, cabinet lights, under the counter lights, closet lights, desk lamps, and ceiling lamps. Most of J type halogen lamps require use of enclosed fixtures and operate on AC mains power (120 V in U.S., 230 V in Europe).
at the Open Lighting Product Directory (OLPD)
