The Norman Lamps 1763 is a 25W incandescent S11 miniature bulb engineered for precision optical and instrument applications requiring a stable, focused light source. Operating at 6.1V and 4.10A, this incandescent lamp delivers 32 mean spherical candlepower (MSCP) of clear, warm light through a clear S11 glass envelope with a CC-6 filament for consistent output.

Built with a P15s single contact prefocus bayonet base, the 1763 incandescent bulb locks into position for accurate optical alignment, making it a reliable choice for microscopes, projectors, scientific instruments, medical equipment, and specialty low-voltage lighting fixtures. The prefocus collar ensures the filament sits at a repeatable light center length every time the lamp is replaced, preserving beam accuracy in focused optical systems.

With a compact 2.38 in. overall length and 1.42 in. diameter, this S11 incandescent miniature lamp fits a wide range of legacy and current equipment sockets. The rated average life of 100 hours reflects its role as a high-intensity precision incandescent source designed for demanding optical duty rather than general illumination.

• 6.1V, 4.10A, 25W S11 incandescent miniature bulb with 32 MSCP light output
• P15s single contact prefocus bayonet base ensures accurate filament positioning for optical alignment
• Clear S11 glass envelope with CC-6 filament for stable, high-intensity incandescent output
• Compact dimensions of 2.38 in. length by 1.42 in. diameter fit a wide range of instrument sockets
• 100 hour average rated life designed for precision optical, projection, and scientific instrument use
• Ideal incandescent replacement lamp for microscopes, projectors, medical devices, and low-voltage specialty fixtures

Tags: 1763, s11, bulbs, p15s base