LED Leuchten Shop

New P4 version!

SEOUL LEDs are alsmost similar to the LUXEON LEDs and belong to the worlds brightest high power LEDs and most popular solutions for evey application based on semiconductor illuminants, too. The new P4 series is the new semiconductor STAR and a hard competitor to Luxeons K2. Depending on the forward current the P4 can get more than twice as bright as the K2 can. The Lumen/Watt ratio is currently unbeatable.

Please note

You should fortified take care of the different selections (bin codes) od the LEDs. For example: White LEDs of Rank "U" have a luminous flux of about 91 till 118.5lm and lower ranks a lot less (@ 1000mA). These differences and the later light efficiency of your application can thereby highly fluctuate. The low forward voltages (Vf) assure a low development of heat that benefits a maximum live time of the products. Please do never run applications with high power LEDs without constant current power supplies. You can find those right here. If you have any trouble with this subject matter or need a special rank just send us an email.

Application area

- Signal installation (traffic lights)
- Any kind of ambient lighting
- Any kinf of effect lighting
- All application where a maximum of light is needed!

Mounting remark: Please note that the Seoul emitters have anodial potential on their backsides which might be forwarded to a metall PCB. Please always use isolating heat conductive glue, -paste or -pads.

Successful usage of high power LEDs:

Heat management

Applications with high power LEDs need enduring, adequate and plane heat conduction from the first moment of use. It is very important and neccessary to get the heat off the devices to ensure the maximum light output, lifetime and efficiancy.

Drive management

LEDs should be run with a constant current in addition to the manufacturers recommendations. To ensure this we recommend to take constant current power supplies because resistors are always a risk factor in high power LED applications.

EMC protection

LEDs are sensitive against heat and electric charge. Please avoid any kind of short circuits or electric discharge to the illuminant. The chip can be damaged or even destroyed.

Storage / JEDEC level

The storage temperature should be from -30°C up to + 80°C in dry ambience. After opening a sealed bag the content should be mounted rapidly. Once absorbed humidity can be removed by tempering the LEDs in some cases. More information can be found in the manufacturers datasheets or on the manufacturer homepages.

Soldering conditions

Each LED has its own soldering conditions that the user should pay attention to. After the launched lead free processing specifications many standarts have changed. Information about recommended soldering can be found in the manufacturers datasheets or on the manufacturer homepages.

Resistor for 5V-Betrieb:	5 Ohm / 0.61 W
Resistor for 9V-Betrieb:	16 Ohm / 2.01 W
Resistor for 12V-Betrieb:	25 Ohm / 3.06 W
Resistor for 14V-Betrieb:	31 Ohm / 3.76 W

individual resistor calculation

individual resistor calculation