An S6 incandescent bulb is a small, rounded incandescent bulb often used in indicator lights, small appliances, and decorative lighting.

Key Characteristics:

• Shape: The "S" stands for "Sign" bulb, and the "6" refers to its diameter in eighths of an inch. So, an S6 bulb has a diameter of 6/8 inches, or 0.75 inches (19 mm).
• Applications: S6 bulbs are commonly found in equipment indicator panels, elevators, exit signs, and sometimes in decorative holiday lights.
• Voltage and Base Options: These bulbs are available in various voltages (like 6V, 12V, and 120V) and can come with bases such as E12 (candelabra) or BA9S (miniature bayonet), among others.
• Light Output: As incandescent bulbs, S6 types are typically low to medium output and provide a warm, steady light.

S6 incandescent light bulbs have a simple design and are versatile for various signaling and decorative applications.