Lamps and light sources

Select the light source first according to the luminaire and format required, then according to the light you want. This section brings together different lamp groups that should be compared according to their own application.

Which group the replacement belongs to

For a bulb format, start with LED bulbs and establish the base and shape. For an elongated light source, browse linear lamps and tubes, where compatibility with the luminaire's equipment is also checked. For other specifically designated formats, continue to special lamps. If you need a strip or module for another solution, use LED strips, modules and accessories instead of equating these products with a standard replacement bulb.

Two successive selections

The first is for physical and electrical compatibility. Record the old lamp's reference, base, dimensions and power supply requirements. Check the luminaire model and equipment required for operation. The second selection concerns light: compare luminous flux, colour temperature and colour rendering. Lumens describe the amount of visible light, while power in watts describes consumption. One value does not replace the other or independently determine illuminance at a specific location.

Tint and control

Colour temperature in Kelvin helps distinguish a warmer from a cooler shade of white light. CRI describes reproduction of illuminated objects' colours. Check these separately, especially for lamps in a shared room. If a dimmer is used, confirm the exact combination. Dimmability does not automatically mean colour temperature adjustment. For electronic control gear, also perform the corresponding separate compatibility check with the light source without inferring it solely from the LED designation.

Light source or new luminaire

Check whether you need only the lamp or the complete lighting solution. For a new fitting, selection includes mounting, housing and accessories not determined by lamp shape alone. For an existing fitting, keep its data beside the light source reference to distinguish technical compatibility from the desired lighting effect.

List for consistent replacement

Create a separate row for each format and location: application required, exact code, lighting variant and quantity. Check the package to avoid confusing lamp count with a described kit. The series presented from LEDVANCE and RADIUM can be compared after these details are clear. If a new luminaire is required, rather than just a lamp, return to lighting and select the corresponding group according to mounting location.