
Mini spots with a pin fitting—primarily the G9 (230V) and G4 (12V) variants—are compact light sources that unobtrusively add brightness and atmosphere to various spaces. These small LED lamps are the modern, energy-efficient solution for many common lighting applications. With the gradual phase-out of traditional halogen lamps, G9 and G4 LED mini spots provide a sustainable alternative for both new installations and replacing existing lighting.
The difference between G9 and G4 pin fittings primarily lies in their operating voltage and the distance between the pins. This is important for proper installation and compatibility with your fixtures.
G9 LED bulbs are recognizable by their two loop-shaped pins spaced 9 millimeters apart. A major advantage of G9 LEDs is that they can be connected directly to the 230V mains supply, with no separate transformer required. This makes installation straightforward and simple. Despite their compact size, they deliver a remarkable amount of light, making them suitable for both accent and functional lighting.
G4 LED bulbs have two thin pins with a 4-millimeter distance between them. An important distinction is that these bulbs operate on a low voltage of 12V. This means that a suitable transformer is needed to convert the 230V mains power to the required 12V. It is crucial that the transformer is compatible with LED lighting and meets the minimum load requirements of the connected lamps.
The shift from halogen to LED technology for mini spots brings significant benefits, both in the short and long term.
When switching to G9 and G4 LED mini spots, there are some practical points to keep in mind to ensure a smooth transition.
Although LED G9 and G4 bulbs are designed as 1-to-1 replacements, the dimensions of the LED versions can sometimes differ slightly from the original halogen lamps. This is due to the integrated electronics in LEDs. It's wise to compare the dimensions of the new LED bulb with the available space in your fixture before making a purchase.
For G4 LED bulbs, which run on 12V, a transformer is necessary. It is important that this transformer is suitable for LED lighting. Older halogen transformers may cause issues due to a higher minimum load. This can result in flickering, a buzzing sound, or even non-functioning bulbs. Choose a transformer specifically suitable for LEDs and ensure that the total wattage of the connected G4 LED bulbs falls within the specified range of the transformer.
When choosing the right mini spot, it’s not just about the fitting, but also about the desired light color and possible dimming options.
The light color of a bulb, expressed in Kelvin (K), influences the ambiance of a room. For G9 and G4 LED bulbs, various color temperatures are available:
Light Color (Kelvin) | Ambiance and Application |
---|---|
2700K – Extra warm white | Creates an intimate and cozy atmosphere, suitable for bedrooms, living rooms, or hospitality venues. |
3000K – Warm white | A general, pleasant light color suitable for various spaces such as hallways, kitchens, or reception areas. |
4000K – Cool white | Provides bright and functional light, enhances concentration, and is often used in kitchens (under-cabinet), workspaces, or garages. |
The color rendering index (CRI) of G9 and G4 LED bulbs is generally high (80 or above), ensuring a true-to-life color representation in the illuminated space.
Many G9 and G4 LED mini spots are dimmable, allowing you to adjust the light intensity to suit the situation. This contributes not only to the ambiance, but can also further reduce energy consumption. For dimmable G4 LED bulbs, ensure that the bulb, transformer, and dimmer are all compatible with dimming to avoid unwanted effects like flickering.
Thanks to their compact size and versatility, G9 and G4 LED mini spots are used in various settings:
Since September 2023, traditional halogen bulbs with G4, GY6.35, and G9 fittings have been phased out within the European Union. This means that these bulbs may no longer be newly produced or imported, further encouraging the switch to energy-efficient LED alternatives.
Old halogen G4 and G9 bulbs may be disposed of with general waste, but this does not apply to LED bulbs. Although LEDs contain no mercury, they must be returned to a recycling point due to their electronic components. This supports responsible material reuse and waste reduction.