625 W TOPCon solar panel with 108 cells. Voc 41.1 V · Isc 18.99 A · TcVoc -0.26%/°C.
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7 panels found · 3423 panels excluded
625 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.1 V | 41.1 V | 0.0% |
| Vmpp | 34.8 V | 34.8 V | 0.0% |
| Isc | 18.99 A | 18.99 A | 0.0% |
| Impp | 17.96 A | 17.96 A | 0.0% |
| TcVoc | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
620 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.1 V | 40.9 V | 0.5% |
| Vmpp | 34.8 V | 34.6 V | 0.6% |
| Isc | 18.99 A | 18.94 A | 0.3% |
| Impp | 17.96 A | 17.92 A | 0.2% |
| TcVoc | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
620 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.1 V | 40.9 V | 0.5% |
| Vmpp | 34.8 V | 34.6 V | 0.6% |
| Isc | 18.99 A | 18.94 A | 0.3% |
| Impp | 17.96 A | 17.92 A | 0.2% |
| TcVoc | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
615 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.1 V | 40.7 V | 1.0% |
| Vmpp | 34.8 V | 34.4 V | 1.1% |
| Isc | 18.99 A | 18.89 A | 0.5% |
| Impp | 17.96 A | 17.88 A | 0.4% |
| TcVoc | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
615 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.1 V | 40.7 V | 1.0% |
| Vmpp | 34.8 V | 34.4 V | 1.1% |
| Isc | 18.99 A | 18.89 A | 0.5% |
| Impp | 17.96 A | 17.88 A | 0.4% |
| TcVoc | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
610 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.1 V | 40.5 V | 1.5% |
| Vmpp | 34.8 V | 34.2 V | 1.7% |
| Isc | 18.99 A | 18.83 A | 0.8% |
| Impp | 17.96 A | 17.84 A | 0.7% |
| TcVoc | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
610 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 41.1 V | 40.5 V | 1.5% |
| Vmpp | 34.8 V | 34.2 V | 1.7% |
| Isc | 18.99 A | 18.83 A | 0.8% |
| Impp | 17.96 A | 17.84 A | 0.7% |
| TcVoc | -0.26 %/°C | -0.26 %/°C | ±0.000 %/°C |
| TcPmax | -0.3 %/°C | -0.3 %/°C | ±0.000 %/°C |
String Compatibility Calculator
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Voc
41.1 V
Vmpp
34.8 V
Isc
18.99 A
Impp
17.96 A
TcVoc
-0.26 %/°C
TcPmax
-0.3 %/°C
Pmax
625 W
Cells
108
Length
1965 mm
Width
1303 mm
Thickness
30 mm
Weight
28.5 kg
The TommaTech TT625-108TN12 Diamond Plus is a 625 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 |
|---|---|---|---|
| 610 W | 40.5 V | 18.83 A | |
| 615 W | 40.7 V | 18.89 A | |
| 620 W | 40.9 V | 18.94 A |
The most critical specs to match are: cell count (must be exactly 108), Voc close to 41.1 V (within ±5%), and temperature coefficient TcVoc close to -0.26%/°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 TommaTech TT625-108TN12 Diamond Plus.