Home > Rebel 7 LED Round Assemblies > Blue 7 LED Assemblies >   Blue (470nm), 7 LED 40mm Round Assembly - 336 lm @ 700mA
	Exclusive to Luxeon Star LEDs, 7 LXML-PB01-0023 Blue Rebel LEDs are soldered to a 40mm round, 1/32" FR4 board. This assembly has been specifically designed to accommodate the Polymar Optics 7 Cell Cluster series of optics, including: Polymer 263 - Fiber Optic Concentrator Polymer 261 - 12 Degree LED Collimator Polymer 264 - 12 Degree LED Diffused Collimator Polymer 262 - 50 Degree LED Collimator The LEDs can be powered in either parallel (singly) or in series with the addition of 0 ohm resistors or solder dots. A Vishay NTC 10K Thermistor (NTHS0805N02N1002J) is mounted to the board to monitor temperature and can be used for foldback temperature control. For more information about using the thermistor, please review our SR-02 Thermal Measurement Guidelines document. The SR-02-B0023 can be ordered in any quantity with quantity discounts available. Want to power this LED assembly from a voltage as low as 10VDC? Then check out the FlexBlock LED driver. A single driver can power all 7 of these LEDs connected in series with any voltage from 10V to 18V*. Need a mixture of different color LEDs pre-mounted to this board? A custom version of this assembly is also available. * The maximum voltage must be less than the total forward voltage of all series connected LEDs.   Blue LED Color 196 Lumens @ 350mA 336 Lumens @ 700mA - Lumens @ 1000mA 26 Efficacy (lm/W) @ 350mA 20 Efficacy (lm/W) @ 700mA 470 Typical Wavelength (nm) (1) 460 to 490 Wavelength Range (nm) (1) 700 Recommended Operating Current (mA) (2) 1000 Maximum Rated Drive Current (mA) 23.1 Typical Forward Voltage (Vf) (3) 24.6 Maximum Forward Voltage (Vf) (3,5) 17 C°/W Thermal Resistance (C°/W) (1,5) 150 Maximum Junction Temperature (C°) -40 - 125 Operating Temperature Range (C°) 40mm x 3mm Dimensions (Dia./H) 1. Values based on 350mA and a Thermal Pad temperature of 25C. 2. This is the maximum operating current that we recommend for this LED. Higher drive currents may be possible, but will require careful design of a suitable cooling system. 3. At the recommended operating current. 4. Typical thermal resistance from the junction of each LED to the bottom of the PCB. 5. This is the value we recommend you use for determining driver input voltage. Important Note About Stock: We only keep a small number of this item in stock. Additional items are generally built to order. There are no minimum order requirements and the lead time will typically run from 2 to 5 business days. Please contact us for lead times for orders above 100 pieces. Do you need LEDs with a specific flux, color or forward voltage? Order this LED assembly in 150 piece increments and we will build it using LEDs from the same bin. We can also provide specific bin numbers. Contact us for availability. Click here to learn more about LED binning. Regular Price: $58.34 Qty in Stock :1 Availability : Additional stock - 2 to 3 days Part No :: SR-02-B0023 Qty:

Additional Details   Documentation Detailed LED Technical Specifications FR4 Base Specifications SR-02-B0023 Assembly Drawing SR-02 Thermal Measurement Guidelines Thermistor Temperature/Resistance Curve The FR4 base used in this assembly is designed to precisely mount and position a single Polymar Optics 7 Cell Cluster optic over the LEDs using RTV or optical adhesive. You will find a list of the Polymar optics we have available here. Thermal Management SR-02-B0023 LED assemblies must be operated to ensure that the junction temperature of the LEDs are kept well below the maximum ratings as specified in the Philips Lumileds datasheet for the LEDs used on this assembly. A heat sink must always be used when operating this assembly. The size of the heat sink that you need will depend on the ambient temperature and the current that is used to power the LEDs. Bench testing that we have conducted with a SR-02-WN300 assembly powered at 700mA in an open air environment and an ambient temperature of 25°C has indicated that a heat sink with a thermal rating of 3.5 C°/W or lower will be adequate. However, you will need to perform your own testing and analysis to determine if this size of heat sink will be suitable for your application. The SR-02-B0023 must be fastened to the heat sink using a thermal interface material such as our pre-cut Bond-Ply 100 pressure sensitive, double sided thermal tape. Additionally, we highly recommend that the assembly also be fastened to the heat sink using three 4-40 screws. Before fastening the assembly to the heat sink, ensure that the two mating surfaces are perfectly flat and clean in order to maximize heat transfer to the the sink. Be careful not to warp or distort the PC Board by over tightening the screws. Connection Diagrams Related Products Polymer Optics 7 LED Cluster 50° Optic Pre-Cut Thermal Tape for 40mm, 7 LED Assemblies 700mA Ext Dimmable BuckPuck Driver With Leads Polymer Optics 7 LED Cluster Concentrator Optic Regular Price: $16.92 Regular Price: $3.99 Regular Price: $15.99 Regular Price: $15.90 60mm Round Alpha Heat Sink Polymer Optics 7 LED Cluster 12° Optic – Diffused Polymer Optics 7 LED Cluster 12° Optic Regular Price: $9.73 Regular Price: $16.92 Regular Price: $16.50

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