How do I choose G4 LED, G5.3 LED, GY6.35 LED?
 
Product instructions of G4 LED, G5.3 LED, GY6.35 LED and G9 LED. How do G4 LED, G5.3 LED, GY6.35 LED, G9 LED compatible with electronic transformer?

  1. What are G4, G5.3, GY6.35

G4, G5.3, GY6.35, G9 mean different type of lamp pins. G refers to plug-in lamp, the numbers after G mean the distance between pins’ center point. 4 means 4mm of distance between pins, 5.3 means 5.3mm, 9 means 9mm.
2. What is the difference between constant voltage G4 LED and constant current G4 LED
Constant voltage and constant current mean two kinds of drive solutions.
The input voltage for constant voltage G4 is DC12V.
The input voltage for constant current G4 is AC12V, but DC12V can be used for constant current G4, so the constant current G4 is also called AC/DC univeral G4.
3. Power for low voltage G4 and G5.3
The drive voltage is 12V for low voltage G4 and G5.3, there are some common 12V power: switching power supply(DC 12V), electronic transformer(AC 12V), LED driver (3*1W,DC 12V). The following table is about compatibility of 12V power:

                12V power
product

Switching Power (DC 12V)

Electronic Transformer(AC 12V)

LED Driver(3*1W)

20W

>20W

Low voltage G4

Constant voltage G4

normal

normal

Dark light or off

Very bright→dead lamp

Constant current G4

normal

normal

normal

normal

Low voltage G5.3

normal

normal

normal

normal

4. Low voltage G4 LED, G5.3 LED, GY6.35 LED and switching power
Switch power is DC output, usually used for household appliances, such as table lamp, electronic balance, massage device, LED lamps ,safety and security monitor, digital products, computers etc. The output parameter include output voltage and output current, when output voltage is fixed, the switch power is differentiated by output current. 12V switch power have kinds of output current: 500mA, 1A, 2A, 5A, 15A, 30A etc.
When multi lamps are used, it has to use parallel way to access to the circuit so that the link can work normally.
The numbers of lamps that a switch power can carry can be calculated by following way:
Lamp numbers= ( switch’s power/ actual power of lamp) *0.8
5. Low voltage G4 LED, G5.3 LED, GY6.35 LED, G9 LED and electronic transformer
The electronic transformer is AC output, usually used for crystal Light, industrial equipment etc. The output parameter includes output voltage and power. The electronic transformer is differentiated by power, like 20W, 40W, 50W, 80W, 120W, 160W, 200W transformer etc.
Although it is AC12V output, 20W transformer can be compatibly used with constant voltage G4 due to low load value.
But more than 20W electronic transformer, it can’t be with constant voltage G4.
Our constant current G4 and G5.3 can work compatibly well with electronic transformers of 20~160W, for more than 160W, part of them can be compatible.
When multi lamps are used, it has to use parallel way to access to the circuit so that the link can work normally.
Generally, 20W transformer can drive lamps from 1 to 10pcs, the 160W can take 1~30pcs lamps. If the numbers of lamp are more than the maximum, it may destroy the transformer
6. Low voltage G4 LED, G5.3 LED, GY6.35 LED, G9 LED and LED power
LED drive is constant current output, the output voltage is not fixed. 3*1W LED drive is the most common, with almost 12V output voltage, often used for low voltage G4 as 12V power.
LED drive can’t be used for constant voltage G4, or it will be over bright and big droop, even the lamp is dead. The constant current G4 and low voltage G5.3 can be driver by LED power because there is constant power board protecting it inside.
One 3*1W LED only can take one constant current G4 or one low voltage G5.3.
7. The input voltage of high voltage G4, G9
Our high voltage G4 and G9 is with single voltage input, not supporting wide voltage input. It is usually 220V. If 110V,it can be customized.
High voltage G4 and G9 don’t support changeable light function and can’t be connected with the dimmer. Or it will cause dead lamp.
8. High voltage G5.3 input voltage
High voltage G5.3 is with wide voltage input, from AC 85V to 240V, but don’t support changeable light function..
9. Precautions for high voltage products
① Please use proper voltage input according to local power request;
② Please pull out the products when power is off;
③ Please don’t touch the lamp when it is used;
④ All products are used indoor, avoiding to be stored and used on the wet and moist surroundings;
⑤ Please don’t pull out the products too often
⑥ The heat of lamp is normal.
10. How do G4 LED, G5.3 LED, GY6.35 LED, G9 LED compatible with electronic transformer?
A. Constant voltage G4, Mean use DC 12V Input voltage, and it can let the driver to be swtich power(Input voltage DC 12V), Or 20W Electronic transformer(Input is AC 12V, Over 20W, example 40W,60W Electronic transformer won't work)
This kind of GU4 can't use LED Driver, nor use over 20W Electronic transformer as it used for 1 pc G4 connector(20W Electronic transformer. Or if you use in engineering project(use a lot of G4, to save cost, one pcs switch power can drive
many constant voltage G4).
B.  Constant current G4: Which means input voltage can be AC 12V Or DC 12V, We call AC/DC GU4, to be able to let it work include:
1. Power supply(Output is DC 12V),
2.Electronic transformer(Output AC 12V, 20W~160W,currently most of constant current G4 can be compatible with the electronic transformer less than 160W). Over 160W ,Some can be compatible,
some are not but of course this type of electronic transformer is rare.
3. LED Driver (3*1W,4*1W) This type of G4 can use LED Driver,price is a little higher.
C 3V G4: It means input voltage is between 3~3.4V,to be able to let it work is only LED Driver(1*1W or For 1~3W)
This kind of GU4 only use LED Driver, can't use electronic transformer or swtich power. This G4 is on the market as of the LEDs being used widely in the market. It only use the G4 pin but it is new to the market,it only come with whole LED Fixture.
The most common G4 are still being used to replace traditional GU4 Lamp so this type is not so popular.

Note: When you use G4, please try to use certain wattage of eletronic transformers only example:40W or 60W but no 40W~50W. This is will hurt the LED
When you use G4, and if you are using OSRAM electronic Transformer, it won't work with LED G4s as of its inner electronic protection for its own halogen G4.