740 W TOPCon solar panel with 132 cells. Voc 50.33 V · Isc 18.27 A · TcVoc -0.23%/°C.
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25 panels found · 4314 panels excluded
730 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.99 V | 0.7% |
| Vmpp | 42.8 V | 42.4 V | 0.9% |
| Isc | 18.27 A | 18.21 A | 0.3% |
| Impp | 17.29 A | 17.22 A | 0.4% |
| TcVoc | -0.23 %/°C | -0.23 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
720 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.65 V | 1.4% |
| Vmpp | 42.8 V | 42 V | 1.9% |
| Isc | 18.27 A | 18.15 A | 0.7% |
| Impp | 17.29 A | 17.15 A | 0.8% |
| TcVoc | -0.23 %/°C | -0.23 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
720 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.7 V | 1.3% |
| Vmpp | 42.8 V | 41.5 V | 3.0% |
| Isc | 18.27 A | 18.51 A | 1.3% |
| Impp | 17.29 A | 17.35 A | 0.3% |
| TcVoc | -0.23 %/°C | -0.24 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
725 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.58 V | 1.5% |
| Vmpp | 42.8 V | 41.48 V | 3.1% |
| Isc | 18.27 A | 18.54 A | 1.5% |
| Impp | 17.29 A | 17.48 A | 1.1% |
| TcVoc | -0.23 %/°C | -0.25 %/°C | ±0.020 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
720 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.4 V | 1.8% |
| Vmpp | 42.8 V | 41.3 V | 3.5% |
| Isc | 18.27 A | 18.48 A | 1.1% |
| Impp | 17.29 A | 17.44 A | 0.9% |
| TcVoc | -0.23 %/°C | -0.24 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
720 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.51 V | 1.6% |
| Vmpp | 42.8 V | 41.33 V | 3.4% |
| Isc | 18.27 A | 18.4 A | 0.7% |
| Impp | 17.29 A | 17.44 A | 0.9% |
| TcVoc | -0.23 %/°C | -0.25 %/°C | ±0.020 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
720 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.82 V | 1.0% |
| Vmpp | 42.8 V | 41.52 V | 3.0% |
| Isc | 18.27 A | 18.13 A | 0.8% |
| Impp | 17.29 A | 17.34 A | 0.3% |
| TcVoc | -0.23 %/°C | -0.25 %/°C | ±0.020 %/°C |
| TcPmax | -0.29 %/°C | -0.35 %/°C | ±0.060 %/°C |
755 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50 V | 0.7% |
| Vmpp | 42.8 V | 41.9 V | 2.1% |
| Isc | 18.27 A | 18.99 A | 3.9% |
| Impp | 17.29 A | 18.02 A | 4.2% |
| TcVoc | -0.23 %/°C | -0.26 %/°C | ±0.030 %/°C |
| TcPmax | -0.29 %/°C | -0.32 %/°C | ±0.030 %/°C |
755 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50 V | 0.7% |
| Vmpp | 42.8 V | 41.9 V | 2.1% |
| Isc | 18.27 A | 18.99 A | 3.9% |
| Impp | 17.29 A | 18.02 A | 4.2% |
| TcVoc | -0.23 %/°C | -0.26 %/°C | ±0.030 %/°C |
| TcPmax | -0.29 %/°C | -0.32 %/°C | ±0.030 %/°C |
750 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.8 V | 1.1% |
| Vmpp | 42.8 V | 41.7 V | 2.6% |
| Isc | 18.27 A | 18.95 A | 3.7% |
| Impp | 17.29 A | 17.99 A | 4.0% |
| TcVoc | -0.23 %/°C | -0.26 %/°C | ±0.030 %/°C |
| TcPmax | -0.29 %/°C | -0.32 %/°C | ±0.030 %/°C |
750 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.8 V | 1.1% |
| Vmpp | 42.8 V | 41.7 V | 2.6% |
| Isc | 18.27 A | 18.95 A | 3.7% |
| Impp | 17.29 A | 17.99 A | 4.0% |
| TcVoc | -0.23 %/°C | -0.26 %/°C | ±0.030 %/°C |
| TcPmax | -0.29 %/°C | -0.32 %/°C | ±0.030 %/°C |
750 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 49.8 V | 1.1% |
| Vmpp | 42.8 V | 41.7 V | 2.6% |
| Isc | 18.27 A | 18.95 A | 3.7% |
| Impp | 17.29 A | 17.99 A | 4.0% |
| TcVoc | -0.23 %/°C | -0.26 %/°C | ±0.030 %/°C |
| TcPmax | -0.29 %/°C | -0.32 %/°C | ±0.030 %/°C |
String Compatibility Calculator
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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
50.33 V
Vmpp
42.8 V
Isc
18.27 A
Impp
17.29 A
TcVoc
-0.23 %/°C
TcPmax
-0.29 %/°C
Pmax
740 W
Cells
132
Length
2384 mm
Width
1303 mm
Thickness
30 mm
Weight
32 kg
The Sun Earth DXM12-66H 740W is a 740 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 |
|---|---|---|---|
| DXM12-66H 700W | 700 W | 48.87 V | 18.03 A |
| DXM12-66H 705W | 705 W | 49.04 V | 18.06 A |
| DXM12-66H 710W | 710 W | 49.21 V | 18.09 A |
| DXM12-66H 720W | 720 W | 49.65 V | 18.15 A |
| DXM12-66H 730W | 730 W | 49.99 V | 18.21 A |
The most critical specs to match are: cell count (must be exactly 132), Voc close to 50.33 V (within ±5%), and temperature coefficient TcVoc close to -0.23%/°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 Sun Earth DXM12-66H 740W.