505 W TOPCon solar panel with 120 cells. Voc 44.53 V · Isc 13.9 A · TcVoc -0.25%/°C.
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46 panels found · 4293 panels excluded
500 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 44.36 V | 0.4% |
| Vmpp | 37.98 V | 37.81 V | 0.4% |
| Isc | 13.9 A | 13.85 A | 0.4% |
| Impp | 13.33 A | 13.25 A | 0.6% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
495 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 44.19 V | 0.8% |
| Vmpp | 37.98 V | 37.64 V | 0.9% |
| Isc | 13.9 A | 13.8 A | 0.7% |
| Impp | 13.33 A | 13.17 A | 1.2% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
490 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 44.02 V | 1.1% |
| Vmpp | 37.98 V | 37.47 V | 1.3% |
| Isc | 13.9 A | 13.75 A | 1.1% |
| Impp | 13.33 A | 13.09 A | 1.8% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
495 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 44.05 V | 1.1% |
| Vmpp | 37.98 V | 37 V | 2.6% |
| Isc | 13.9 A | 13.9 A | 0.0% |
| Impp | 13.33 A | 13.39 A | 0.5% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
485 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 43.85 V | 1.5% |
| Vmpp | 37.98 V | 37.3 V | 1.8% |
| Isc | 13.9 A | 13.7 A | 1.4% |
| Impp | 13.33 A | 13.01 A | 2.4% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
490 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 43.88 V | 1.5% |
| Vmpp | 37.98 V | 36.86 V | 2.9% |
| Isc | 13.9 A | 13.86 A | 0.3% |
| Impp | 13.33 A | 13.3 A | 0.2% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
485 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 43.71 V | 1.8% |
| Vmpp | 37.98 V | 36.72 V | 3.3% |
| Isc | 13.9 A | 13.82 A | 0.6% |
| Impp | 13.33 A | 13.21 A | 0.9% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
490 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 43.91 V | 1.4% |
| Vmpp | 37.98 V | 36.43 V | 4.1% |
| Isc | 13.9 A | 14.01 A | 0.8% |
| Impp | 13.33 A | 13.45 A | 0.9% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.29 %/°C | ±0.010 %/°C |
490 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 43.91 V | 1.4% |
| Vmpp | 37.98 V | 36.43 V | 4.1% |
| Isc | 13.9 A | 14.01 A | 0.8% |
| Impp | 13.33 A | 13.45 A | 0.9% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.29 %/°C | ±0.010 %/°C |
500 W
ABC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 45.02 V | 1.1% |
| Vmpp | 37.98 V | 37.9 V | 0.2% |
| Isc | 13.9 A | 14.05 A | 1.1% |
| Impp | 13.33 A | 13.2 A | 1.0% |
| TcVoc | -0.25 %/°C | -0.22 %/°C | ±0.030 %/°C |
| TcPmax | -0.3 %/°C | -0.26 %/°C | ±0.040 %/°C |
500 W
ABC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 45.02 V | 1.1% |
| Vmpp | 37.98 V | 37.9 V | 0.2% |
| Isc | 13.9 A | 14.05 A | 1.1% |
| Impp | 13.33 A | 13.2 A | 1.0% |
| TcVoc | -0.25 %/°C | -0.22 %/°C | ±0.030 %/°C |
| TcPmax | -0.3 %/°C | -0.26 %/°C | ±0.040 %/°C |
500 W
ABC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 44.53 V | 45.02 V | 1.1% |
| Vmpp | 37.98 V | 37.9 V | 0.2% |
| Isc | 13.9 A | 14.05 A | 1.1% |
| Impp | 13.33 A | 13.21 A | 0.9% |
| TcVoc | -0.25 %/°C | -0.22 %/°C | ±0.030 %/°C |
| TcPmax | -0.3 %/°C | -0.26 %/°C | ±0.040 %/°C |
String Compatibility Calculator
Verify the replacement panel works with your inverter
Panel Matcher
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Find an inverter that fits your panel array with the right MPPT range and DC/AC ratio.
How the Algorithm Works
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Voc
44.53 V
Vmpp
37.98 V
Isc
13.9 A
Impp
13.33 A
TcVoc
-0.25 %/°C
TcPmax
-0.3 %/°C
Pmax
505 W
Cells
120
Length
1908 mm
Width
1134 mm
Thickness
30 mm
Weight
24.2 kg
The Perlight Solar PLM-505H8NB-120 is a 505 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-460H8NB-120 | 460 W | 43 V | 13.45 A |
| PLM-465H8NB-120 | 465 W | 43.17 V | 13.5 A |
| PLM-470H8NB-120 | 470 W | 43.34 V | 13.55 A |
| PLM-475H8NB-120 | 475 W | 43.51 V | 13.6 A |
| PLM-480H8NB-120 | 480 W | 43.68 V | 13.65 A |
| PLM-485H8NB-120 | 485 W | 43.85 V | 13.7 A |
| PLM-490H8NB-120 | 490 W | 44.02 V | 13.75 A |
| PLM-495H8NB-120 | 495 W | 44.19 V | 13.8 A |
| PLM-500H8NB-120 | 500 W | 44.36 V | 13.85 A |
The most critical specs to match are: cell count (must be exactly 120), Voc close to 44.53 V (within ±5%), and temperature coefficient TcVoc close to -0.25%/°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-505H8NB-120.