Polycrystalline Solar Cell 2"x2" or 52x52mm of 1BB
52x52 mm (2x2 inch) polycrystalline solar cell rated about 0.50 Wp with 1 busbar. Nominal values: Vmp 0.544 V, Imp 0.90 A, Voc 0.64 V and 18.7% efficiency.
A compact square format for mini modules, models, sensors, prototypes and STEM labs. This is a bare cell and requires ribbon, soldering, support and encapsulation.
The 52x52 mm 1BB polycrystalline solar cell produces approximately 0.50 Wp in a compact square format that is easy to arrange in small modules, prototypes and demonstrators. At maximum power it supplies a nominal 0.544 V and 0.90 A.
It is not a ready-to-use panel. Module construction requires ribbon compatible with the single busbar, controlled soldering, mechanical support, insulation and encapsulation against moisture and impact.
Why choose the square 52x52 mm format?
The 2x2 inch geometry simplifies regular matrix layouts and provides a useful balance between footprint and current for micro panels. It suits sensors, models, fans, experimental chargers and educational activities.
For repairs, technology, dimensions, current, busbar and electrical characteristics must match. A different cell format may create mismatch even if nominal voltage is similar.
SC1P1-52x52 technical specifications
| Reference | SC1P1-52x52 |
| Technology | Polycrystalline silicon |
| Rated power Pmax | About 0.50 Wp |
| Vmp | 0.544 V |
| Imp | 0.90 A |
| Voc | 0.64 V |
| Isc | 0.98 A |
| Efficiency | 18.7% |
| Busbar | 1BB |
| Dimensions | 52x52 mm, about 2x2 inches |
| Thickness | 170 ± 20 µm |
| Weight | About 3 g |
What do 12, 24 or 36 cells produce?
Series connection adds voltage while current remains about 0.90 A. Values are theoretical before temperature, mismatch, soldering and encapsulation losses.
| Cells | Vmp | Voc | Approximate power |
| 12 | 6.53 V | 7.68 V | 6 Wp |
| 24 | 13.06 V | 15.36 V | 12 Wp |
| 36 | 19.58 V | 23.04 V | 18 Wp |
Choose the number of cells from the voltage required by the load or charge controller. To increase current, connect only complete matched strings in parallel.
STEM projects and educational photovoltaic kits
The square shape makes small matrices easy to build and compare in series and parallel. Students can measure how light, shading, angle and temperature affect voltage and current.
Discover The Sun in the Classroom and MR WATT educational photovoltaic kits
How to solder a 1BB cell
Use compatible ribbon and flux, a clean tip, controlled temperature and short contact times. Keep the cell flat, do not bend it and check continuity, polarity and voltage after every string.
Read the MR WATT solar-cell soldering guide
Frequently asked questions
Is this a complete photovoltaic panel?
No. It is one approximately 0.50 Wp cell requiring interconnections, support, insulation and encapsulation.
How many cells are needed for about 12V?
Twenty-four cells in series provide about 13.06 V nominal Vmp. The final choice depends on the load and charge controller.
Can it directly power a small device?
It depends on consumption and light. One cell supplies about 0.544 V and 0.90 A nominally; multiple cells, storage or regulation electronics are often required.
Is it suitable for school laboratories?
Yes. The square shape supports orderly matrices and simple experiments on series, parallel, light and shading.
Can it be used outdoors without protection?
No. It must be encapsulated and protected from moisture, impact and bending.
