g4 bulb
Sophia Aguilar
Updated on May 17, 2026
The G4 lamps are types of the bi-pin or two-pin standard, defined by the International Electrotechnical Commission (IEC). These types of lamps have two pins at the input. The number 4 in the name indicates the center-to-center distance between two pins, which is 4mm in this type.
Can I replace my G4 halogen bulbs with LED?
G4 Bulb Type LEDs are a simple replacement for your G4 Pin Type Halogen Globes. However, a better option for Down Lights and some other fittings using G4 halogen bulbs are using our Multi-Volt G4 LED Disc type replacements.
What is a G4 LED bulb used for?
Products G4 LED Bulb
These bulbs are used in chandeliers, wall sconces, ceiling lights, under cabinet lights, decorative lights, landscape lights, and other light fixtures or lighting systems in which the low voltage (12V) power supply is readily available.
Is G4 same as G9 bulb?
The difference between the G4 and G9 bulb formats relate to the bulb having either straight or looped prongs; the format that you require will be defined by the light fitting that you have and can best be judged by a straight replacement and inspection of the old bulbs.
Is G4 same as GY6 35?
If your bi-pin bulb measures 4 millimeters between pins, you have a G4 base bulb which comes in 6, 12, or 24 Volts. If your measurement is just a hair wider than 6 millimeters, you have a bulb with a G6. 35 base, which comes in 12, 24, or 120 Volts.
Can I replace 12v halogen with LED?
Fortunately, upgrading Halogen MR16 light bulbs to LED is usually a painless affair, as most LED light bulbs are now designed to retrofit to existing light fittings. All you have to do to swap your old light bulbs out is remove them from the light fixture and fit the new, shiny light bulbs in their place.
Can you get G4 LED bulbs?
We stock G4 capsule bulbs in wide range of wattage, so that you can always find suitable G4 led bulbs at SLB. Our LED capsule bulbs are available in different colour temperatures and they also last longer when compared to traditional Halogen capsule.
Can I put LED bulbs in halogen fittings?
ANSWER: Yes, there are LED bulbs you can use in your fixtures. The LED equivalent to the 50-watt halogen bulb will probably burn only about six or seven watts. These LED bulbs cost more, $30 to $35, but because they will last for years, they are worth the price. And LEDs give off relatively no heat at all.
Can you swap halogen bulbs for LED?
Yes, in many cases, you can simply replace your bulbs separately, one by one. We guide you through the most important steps for selecting replacement LED bulbs for most commonly used fittings.
Can you replace regular headlights with LED?
Many drivers are tired and frustrated with the dull, yellowish light output from halogen headlight bulbs and as a result, we frequently get asked: “Can I put LED or HID bulbs in my stock halogen headlight?”. The good news is that, yes, you can.
How many watts is a G4 LED bulb?
A G4 Bi-Pin base allows for easy installation. The energy-efficient LED bulb uses only 2 watts of power; an halogen bulb with comparable light output would consume 20 watts.
What are G4 halogen bulbs used in?
G4 halogen bulbs are compact and tend to be used in areas where space is limited, such as the interior of cupboards and display cabinets. Although small, they are powerful and produce ample amounts of light which can be ideal for decorative purposes.
Can you use a G4 bulb in place of a G9?
Our range of G9 bulbs operate off the mains voltage (220-240V), while G4 capsule bulbs are low voltage (usually between 12V and 24V) and need to be installed with a compatible transformer to transform mains voltage into a lower one suitable for the bulb.
Can you use G9 LED bulbs instead of halogen?
Yes, the G9 LED is a direct replacement for the G9 halogen bulb. You don’t need a transformer or LED driver (see section 6).
What wattage is a G4 G9 halogen bulb?
Energy Saving G9 33W Halogen Bulb Clear Capsule
This 33 watts rated g9 halogen bulb has a equivalent light output to a 40 watt standard
What size is a G4 bulb?
Halogen G4 5W (JC5W)
Dimensions : Length 29mm and Diameter 9mm. 12 volt operation normally with a mains voltage lighting fixture
What is the difference between G4 and G5 bulbs?
Diameter of pins: G4 pins have a diameter of 0.8 millimeter, G5. 3 pins have a diameter of 1 millimeter, G6. 35 pins have a diameter of 1 millimeter, GY6. 35 pins are 1.25 millimeters in diameter.
Are G6 35 and GY6 35 interchangeable?
35 and GY6. 35 are the same. G6. 35 prongs are 1mm,GY6.