420 W PERC solar panel with 305 cells. Voc 41.6 V · Isc 12.92 A · TcVoc -0.27%/°C.
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5 panels found · 4334 panels excluded
415 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.6 V | 41.5 V | 0.2% |
| Vmpp | 34.5 V | 34.4 V | 0.3% |
| Isc | 12.92 A | 12.8 A | 0.9% |
| Impp | 12.19 A | 12.08 A | 0.9% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
425 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.6 V | 41.7 V | 0.2% |
| Vmpp | 34.5 V | 34.6 V | 0.3% |
| Isc | 12.92 A | 13.03 A | 0.9% |
| Impp | 12.19 A | 12.3 A | 0.9% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
410 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.6 V | 41.4 V | 0.5% |
| Vmpp | 34.5 V | 34.4 V | 0.3% |
| Isc | 12.92 A | 12.65 A | 2.1% |
| Impp | 12.19 A | 11.97 A | 1.8% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
405 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.6 V | 41.3 V | 0.7% |
| Vmpp | 34.5 V | 34.3 V | 0.6% |
| Isc | 12.92 A | 12.53 A | 3.0% |
| Impp | 12.19 A | 11.86 A | 2.7% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
400 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.6 V | 41.2 V | 1.0% |
| Vmpp | 34.5 V | 34.2 V | 0.9% |
| Isc | 12.92 A | 12.41 A | 3.9% |
| Impp | 12.19 A | 11.75 A | 3.6% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
String Compatibility Calculator
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Voc
41.6 V
Vmpp
34.5 V
Isc
12.92 A
Impp
12.19 A
TcVoc
-0.27 %/°C
TcPmax
-0.34 %/°C
Pmax
420 W
Cells
305
Length
1812 mm
Width
1096 mm
Thickness
30 mm
Weight
20.8 kg
The Perlight Solar PLM-420OM10A-44B is a 420 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.
Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.
| Model | Power | Voc | Isc |
|---|---|---|---|
| PLM-400OM10A-44B | 400 W | 41.2 V | 12.41 A |
| PLM-405OM10A-44B | 405 W | 41.3 V | 12.53 A |
| PLM-410OM10A-44B | 410 W | 41.4 V | 12.65 A |
| PLM-415OM10A-44B | 415 W | 41.5 V | 12.8 A |
| PLM-425OM10A-44B | 425 W | 41.7 V | 13.03 A |
The most critical specs to match are: cell count (must be exactly 305), Voc close to 41.6 V (within ±5%), and temperature coefficient TcVoc close to -0.27%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.
A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.
If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original Perlight Solar PLM-420OM10A-44B.