Powerfilm RC7.2-75 (100mA @ 7.2V) Miniature Solar Panel
PowerFilm® RC Aircraft Series modules
The PowerFilm® RC Aircraft Series modules are designed to be easily integrated with RC Aircraft. These PowerFilm® modules are very lightweight, can be soldered to from the back of the module via the extended copper tape, and have an extra edge seal for protection from fuel contamination and weather. Modules are available with a strong pressure sensitive adhesive for simple bonding. These modules do not have a UV-stabilized surface. For connection, just solder to the copper tape.
PowerFilm® RC Aircraft Series - Installation
Leads and Testing The leads on the solar modules in the PowerFilm® RC Aircraft series are the copper tape strips at each end of the module. In this series the copper tape is specially folded around the back of the solar modules so it is possible to solder to the backside of the module. Remember to check the Polarity!
PowerFilm® Module Polarity Information
It is extremely important to recognize the correct polarity of the PowerFilm® modules! The positive end of the solar module is shown in the diagram below. A diode, such as 1N5817, is recommended to prevent the solar module from draining the battery when the solar module is in the dark. A diode is not required for a battery-free electrical device. The positive end of the module connects to the positive end of the load. The negative end of the module is also shown in the diagram and should be connected to the negative end of the load. The recommended connector wire size is a minimum size of 24 gauge. As an extra measure, connect the solar module to a digital multimeter for polarity (+,-) identification. On solar modules with copper tape leads, remove a small piece of the clear coating that is on top of the copper tape to ensure good contact between the alligator clips of the digital multimeter and the copper tape.
Warning! Do not connect a charged battery backwards or reverse polarity to the solar module, this will destroy the solar module and may cause the battery to explode causing bodily harm, even death!
Connecting the PowerFilm® Module to a Load Remember to check the Polarity!
Soldering The solar modules should be soldered to from the front. The positive copper contact is on one end and the negative is on the other end (see section on Polarity).
Use the hot tip of the soldering iron to melt through the clean coating of the copper tape. Be careful not to burn through more than just the clear thin coating. Burning too deeply can damage the solar module. Although not necessary, it is possible to remove a small piece of the clear coating with a sharp knife prior to soldering to the copper tape.
Good contact can be made by melting and depositing a dot of solder to the exposed copper tape. Use a low temperature soldering iron adjusted to about 600 to 650 degrees (F). It is also acceptable to solder directly to the copper tape, without using a solder dot.
Modules with Pressure Sensitive Adhesive (PSA) on the back require the release liner to be removed before the solder dot is placed. Once the solder dot is formed a wire can be attached.
Fastening the PowerFilm® Module
Modules without the Pressure Sensitive Adhesive (PSA) A double-sided adhesive tape or spray adhesive may be used to mount the solar module. Be careful not to get spray on the front of the modules since this will degrade overall performance.
Modules with the Pressure Sensitive Adhesive (PSA) The release line on the PSA modules is clear, carefully pick at the back (silver side) corner of the module until the release liner starts to exfoliate. Once the module with PSA is mounted it cannot be removed since the PSA adhesive is permanent!
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