Advisor LED Bulbs: How To Find The Corresponding Base Type For Your Lamp Holder

Luminosity, viewing angle, and Helligkeit…wenn it comes to the selection of the right LED lamps replacement, there are to consider a lot of things. The most important thing, before it goes to the finer points: The right version. To find which is not easy on the basis of the sheer amount of different base types. Time for a little advice.

Here we will introduce the most common base types for LED lamps and show you which bulbs with which versions of compatible and where to apply such LED at all.

The Most Common Base For LED Lamps At A Glance

There are LED bulbs now for almost any application, whether as a light bulb replacement (retrofit), as automotive lighting, Garden lights or even the refrigerator. What version of what belongs and how you recognize it in the store you can read that here:

High-Voltage Bulbs

Screw Thread/Edisonsockel

E40:  This base type has a screw thread, the well-known E27 Sockets-analog. Only that they have 40 instead of 27 mm diameter.
At home you don’t need more this type. According to everhomedecor, E40 LED lamps are mainly used where very high brightness is required, as for example, when parking or street lighting and in production halls or on the stages of the world.

Sure, you know this version. Because the E27 socket is the good old screw mount of the classic light bulb. With its diameter of 27 mm, it is almost universal and finds himself as PAR lamps as well as in PEAR, or candle. Simply screw the lamp replacement is done.

Slightly slimmer than its big sister E27, E14 socket comes along. The design known as the “Candle version” has a diameter of 14 mm. The screw thread ideal for chandeliers and chandelier, but gladly will be wall lamps, desk lamps, or Christmas lights installed.

Bayonet Cap-High Voltage

GU10: The GU10 is no screw thread, but a bayonet Cap. Two base pins that are inserted into the thread and turning fixed form the version. It is common standard for halogen lamps – there are now GU10 versions but also as LED, so that you can save a lot of energy through an Exchange.

GU10 refers to the distance between the two pins of 10 mm. Not to be confused with the diameter of the spot – which is usually 50mm. GU10 spotlights are used mostly in light fixtures.

Loop Base

GU9 (or simply G9) base is indicated by usually the two loops, which form the two pins. G9’s can be LED spotlights, however, also to conventional, plastic pins. Here, the distance between two socket pins or loops is 9mm. They are designed for operating 220V high voltage illuminant and can easily replace G9 halogen spots.
When purchasing you should respect however on a possible small diameter of the G9 LED spotlights, because the space for many G9 lamps is limited. Applications include both wall and ceiling lights as also table or hanging lamps.

Pin socket (Bipin) for lamps with 12 volt (low voltage)

GU5, 3 – type MR16
The standard equipment of low-voltage halogen lamps is a GU5, 3 Sockets with type MR16. GU5, 3 indicates the distance of the two socket pins by 5, 3 mm, MR16 stands for the design with a diameter of 50 mm. The bulbs as general lighting are used almost everywhere, whether living, bedroom or dining room. Compared to 12-volt halogen lamps you can save up to 90% power through an exchange for LED.

Base GU5, 3-Design MR11
Same base, smaller diameter: Design MR11 spotlights measure only 35 mm in diameter. They are found in Recessed spotlights, as bar and counter lighting, or often in mobile homes.

G4/GU4 base
G4 and GU4 lamp have a pin socket 2-pin, whose distance is 4 mm. In contrast to G4 lamps the diameter of the base pins at GU4 lamps is however slightly higher (0.65-0, 75 mm for G4/0.95-1, 05 mm at GU4).

The small LED lights in hoods, table and desk lamps, mobile homes, and more can be found.The dimensions and design are important in the Exchange, because thanks to the reflector is of course partly limited. Also, their light is not around leave why the base pins some models are side or rear mounted.

Fluorescent Socket

Flashlights have an R7s socket, as they occur as ceiling washlights or floor lamps lamps. With RS7s LED light bulbs to halogen bars energy efficient replace and that equal twice, because LED tubes typically no ballast need as opposed to fluorescent tubes. They are available 24-28 V and 42 V for 230 V mains voltage and also for the lower voltage of 110-130 V, as well as in standard length (118 mm) for the low voltages. More lengths of R7s flashlights are 78 mm and 189 mm.

The contact points are located at the outer ends of the lamp, although there is variation in the diameter of the tubes as well as the distance of the base pins to each other. Can the diameter, the number behind the T (= “Tube”) reading, for example T5 (Ø 5/8 inch = approx. 16mm). He is always entered eighth-inch. To each other in millimeters read off the distance of the pins in number after the G. Here the most common RS7s versions at a glance:

Amended T5 G5
The diameter of this tube base is 5 mm 5/8 or 16 mm, the distance between of the two pins.Can be found in many grid and pendant luminaires T5.
When G13 versions, the distance of the pins is 25 mm, so here also T8-TL lamps connect. For rounded TL tubes with four contact points (two on the Interior, two on the outside) 2GX13-Fassungen are suitable.
Version T8 G13
The T8 G13 socket pins apart 13 mm and the diameter of the tube is 26mm. This type of socket is particularly widespread, whether in underground car parks, Office lighting, in workshops or in the kitchen and living room.