740 W TOPCon solar panel with 132 cells. Voc 50.33 V · Isc 18.27 A · TcVoc -0.23%/°C.
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92 panels found · 4247 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 |
740 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.3 V | 0.1% |
| Vmpp | 42.8 V | 42.1 V | 1.6% |
| Isc | 18.27 A | 18.66 A | 2.1% |
| Impp | 17.29 A | 17.58 A | 1.7% |
| TcVoc | -0.23 %/°C | -0.24 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
730 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.33 V | 0.0% |
| Vmpp | 42.8 V | 42.2 V | 1.4% |
| Isc | 18.27 A | 18.38 A | 0.6% |
| Impp | 17.29 A | 17.32 A | 0.2% |
| TcVoc | -0.23 %/°C | -0.22 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°C |
730 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.37 V | 0.1% |
| Vmpp | 42.8 V | 42.32 V | 1.1% |
| Isc | 18.27 A | 18.35 A | 0.4% |
| Impp | 17.29 A | 17.26 A | 0.2% |
| TcVoc | -0.23 %/°C | -0.22 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°C |
720 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.4 V | 0.1% |
| Vmpp | 42.8 V | 42.48 V | 0.7% |
| Isc | 18.27 A | 18.18 A | 0.5% |
| Impp | 17.29 A | 16.95 A | 2.0% |
| TcVoc | -0.23 %/°C | -0.24 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°C |
725 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.31 V | 0.0% |
| Vmpp | 42.8 V | 42.25 V | 1.3% |
| Isc | 18.27 A | 18.24 A | 0.2% |
| Impp | 17.29 A | 17.16 A | 0.8% |
| TcVoc | -0.23 %/°C | -0.22 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°C |
730 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.42 V | 0.2% |
| Vmpp | 42.8 V | 42.35 V | 1.1% |
| Isc | 18.27 A | 18.33 A | 0.3% |
| Impp | 17.29 A | 17.24 A | 0.3% |
| TcVoc | -0.23 %/°C | -0.22 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°C |
735 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.1 V | 0.5% |
| Vmpp | 42.8 V | 41.9 V | 2.1% |
| Isc | 18.27 A | 18.62 A | 1.9% |
| Impp | 17.29 A | 17.55 A | 1.5% |
| TcVoc | -0.23 %/°C | -0.24 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
725 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.26 V | 0.1% |
| Vmpp | 42.8 V | 42.14 V | 1.5% |
| Isc | 18.27 A | 18.29 A | 0.1% |
| Impp | 17.29 A | 17.23 A | 0.3% |
| TcVoc | -0.23 %/°C | -0.22 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°C |
720 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.36 V | 0.1% |
| Vmpp | 42.8 V | 42.28 V | 1.2% |
| Isc | 18.27 A | 18.08 A | 1.0% |
| Impp | 17.29 A | 17.03 A | 1.5% |
| TcVoc | -0.23 %/°C | -0.22 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°C |
735 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.47 V | 0.3% |
| Vmpp | 42.8 V | 42.41 V | 0.9% |
| Isc | 18.27 A | 18.44 A | 0.9% |
| Impp | 17.29 A | 17.34 A | 0.3% |
| TcVoc | -0.23 %/°C | -0.22 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°C |
735 W
HJT| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.33 V | 50.4 V | 0.1% |
| Vmpp | 42.8 V | 42.26 V | 1.3% |
| Isc | 18.27 A | 18.47 A | 1.1% |
| Impp | 17.29 A | 17.41 A | 0.7% |
| TcVoc | -0.23 %/°C | -0.22 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.24 %/°C | ±0.050 %/°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
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
Bifaciality
80%
Length
2384 mm
Width
1303 mm
Thickness
30 mm
Weight
38 kg
The Sun Earth DXM12-66HBG 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 |
|---|---|---|---|
| DXM12-66HBG 700W | 700 W | 48.87 V | 18.03 A |
| DXM12-66HBG 705W | 705 W | 49.04 V | 18.06 A |
| DXM12-66HBG 710W | 710 W | 49.21 V | 18.09 A |
| DXM12-66HBG 720W | 720 W | 49.65 V | 18.15 A |
| DXM12-66HBG 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 DXM12-66HBG 740W.