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    Seoul 3.5W P4   >   Seoul 3.5W (P4 Version)

Seoul 3.5W (P4 Version)

Z-LED P4 series


Technical Data

Unit Value
Light color royal-blue
Beam 130°
Height 5.08mm
Unit min. typ. max.
Radiantflux 468mW
Wavelength 455nm
Voltage 3.25V 3.25V 3.8V
Current 350mA 350mA 1000mA


Datasheet 4.34 MB
Binning & Labeling 943.32 KB


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!

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.

Delivery time

Deliveries within Germany take 2-3 days beginning after receipt of payment, for deliveries to invoice beginning with the shipment, for deliveries to cash on delivery beginning with receipt of order. Payments and incoming orders beyond our business hours let the delivery time begin with the next workday. For deliveries to other EU countries the delivery time may be extended up to 3 weeks. The delivery time is subject to the proper delivery of the logistics company, as far as delivery delays are not caused by us. The validity of the above delivery times requires the availability of the ordered goods from stock at the time the delivery time is beginning.