The SP-02 has been specifically designed to accommodate the Polymer and Khatod 7 Cell Cluster series of optics, including:
The LEDs can be powered 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 SP-02 Onboard Thermistor Temperature Measurement application note.
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*.
* The maximum input voltage to the driver must be less than the total forward voltage of all series connected LEDs.
Important Notes About Ordering Custom LEDs
- Orders for custom LEDs cannot be canceled or altered once your order has been reviewed and submitted to production! So be very sure that you have selected the correct LEDs before you submit your order! Custom LEDs are subject to special order terms as detailed here.
- Before you order cyan LEDs, please be sure to read this important information about color variations.
- Bases are configured to power each LED separately for parallel operation, however you can easily convert the assembly to power the LEDs in series with the addition of solder dots.
SP-02 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 LED datasheet. A heat sink must always be used when operating this assembly. The size of the heat sink will depend on the ambient temperature and the current that is used to power the LEDs. Bench testing that we have conducted with a SP-02-N4 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 9 C°/W or lower should 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 SP-02 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, Arctic Silver thermal adhesive or screws with thermal grease. 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. If you are using screws, be careful not to warp or distort the assembly by over tightening the screws.