General
Socket	E27
Colour of light	827
Colour rendering index	≥ 80
Beam angle	Up to 300°
Lifespan	up to 15000 h
Operating voltage	Mains voltage
Energy consumption	3,4 W
Luminous flux	470 lm
Lamp shape	Classic piston shape
Technology	LED 'filament' technology
Dimmability	Not dimmable
Material	Glass
Light output	Instant 100 %
UV and IR radiation	none
Application area	indoor use, decorative installations, general lighting
Outdoor use	only in suitable outdoor luminaires

The Osram LED Classic A 40 Filament P 3.4W 827 Cle is an LED lamp in the classic bulb format, developed as a retrofit solution for existing luminaires with E27 socket. The product uses LED 'filament' technology, which creates an optical appearance similar to a conventional incandescent or halogen lamp, while maintaining comparable dimensions and luminous flux. The lamp is designed for operation at mains voltage and is suitable for applications in households as well as for decorative installations and general lighting. Due to its construction, it is intended for outdoor use only in suitable outdoor luminaires.

Applications

The lamp is designed for decorative and general lighting purposes indoors. It is particularly suitable for applications where a classic lamp design is desired, for example in living rooms, hallways or kitchens. Use outdoors is permitted only in protected outdoor luminaires, as the lamp is not specifically designed for direct weather exposure. The application is in standard luminaires with E27 socket, allowing for simple replacement of conventional incandescent lamps.

Functions and Equipment in Detail

The lamp features a radiation angle of up to 300°, enabling wide and even light distribution. The light colour corresponds to colour temperature 827, i.e. warm white light, suitable for pleasant room illumination. The colour rendering index (Ra) is at least 80, ensuring good colour reproduction. The colour point remains constant, so no colour shifts occur during the lamp's lifetime. The lamp is not dimmable and produces 100 % of its luminous flux immediately without warm-up time. The light source contains no UV or near-IR components, ensuring pleasant and health-compatible lighting.

Technology Explained Simply

The LED 'filament' technology simulates the appearance of a filament, where the light source consists of several small LEDs arranged in a line. This enables a light image that optically resembles a conventional incandescent lamp, yet with significantly lower energy consumption. The lamp consumes 3.4 watts and replaces a conventional 40-watt incandescent lamp. The lifespan is up to 15,000 hours, corresponding to a long service life. The lamp is made of glass, which influences optical quality and light distribution.

Compatibility and Accessories

The lamp is compatible with all luminaires featuring an E27 socket designed for mains voltage. Use in luminaires designed for dimmable lamps is not intended, as the lamp is not dimmable. The application is exclusively indoors or in protected outdoor luminaires.

Installation and Mounting

Installation is carried out by simply screwing into an E27 socket. No special tools or additional components are required. The lamp can be directly installed in existing luminaires without requiring any modification to the electrical installation. Mounting is simple and does not require special knowledge.

Operational Advantages

The lamp offers lower energy consumption compared to incandescent or halogen lamps, leading to reduced operating costs. The long lifespan of up to 15,000 hours reduces maintenance frequency. Immediate light output without warm-up time enables quick use. The light quality with a colour rendering index of at least 80 ensures clear and natural colour reproduction. The absence of UV and IR radiation protects sensitive surfaces and creates a pleasant lighting environment.