640 W TOPCon solar panel with 132 cells. Voc 50.9 V · Isc 15.97 A · TcVoc -0.24%/°C.
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33 panels found · 4306 panels excluded
645 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 51.2 V | 0.6% |
| Vmpp | 42.6 V | 42.9 V | 0.7% |
| Isc | 15.97 A | 15.99 A | 0.1% |
| Impp | 15.03 A | 15.04 A | 0.1% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
635 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 50.5 V | 0.8% |
| Vmpp | 42.6 V | 42.3 V | 0.7% |
| Isc | 15.97 A | 15.95 A | 0.1% |
| Impp | 15.03 A | 15.02 A | 0.1% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
630 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 50.3 V | 1.2% |
| Vmpp | 42.6 V | 42 V | 1.4% |
| Isc | 15.97 A | 15.94 A | 0.2% |
| Impp | 15.03 A | 15.01 A | 0.1% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 51.5 V | 1.2% |
| Vmpp | 42.6 V | 43.2 V | 1.4% |
| Isc | 15.97 A | 16.01 A | 0.3% |
| Impp | 15.03 A | 15.05 A | 0.1% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 50.5 V | 0.8% |
| Vmpp | 42.6 V | 43.1 V | 1.2% |
| Isc | 15.97 A | 15.93 A | 0.3% |
| Impp | 15.03 A | 15.09 A | 0.4% |
| TcVoc | -0.24 %/°C | -0.23 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
630 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 50.3 V | 1.2% |
| Vmpp | 42.6 V | 42 V | 1.4% |
| Isc | 15.97 A | 15.94 A | 0.2% |
| Impp | 15.03 A | 15.01 A | 0.1% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
630 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 50.2 V | 1.4% |
| Vmpp | 42.6 V | 42 V | 1.4% |
| Isc | 15.97 A | 15.93 A | 0.3% |
| Impp | 15.03 A | 15.01 A | 0.1% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
640 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 50.1 V | 1.6% |
| Vmpp | 42.6 V | 42.7 V | 0.2% |
| Isc | 15.97 A | 15.87 A | 0.6% |
| Impp | 15.03 A | 14.99 A | 0.3% |
| TcVoc | -0.24 %/°C | -0.23 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
655 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 50.39 V | 1.0% |
| Vmpp | 42.6 V | 42.42 V | 0.4% |
| Isc | 15.97 A | 16.44 A | 2.9% |
| Impp | 15.03 A | 15.45 A | 2.8% |
| TcVoc | -0.24 %/°C | -0.26 %/°C | ±0.020 %/°C |
| TcPmax | -0.29 %/°C | -0.3 %/°C | ±0.010 %/°C |
655 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 50.39 V | 1.0% |
| Vmpp | 42.6 V | 42.42 V | 0.4% |
| Isc | 15.97 A | 16.44 A | 2.9% |
| Impp | 15.03 A | 15.45 A | 2.8% |
| TcVoc | -0.24 %/°C | -0.26 %/°C | ±0.020 %/°C |
| TcPmax | -0.29 %/°C | -0.3 %/°C | ±0.010 %/°C |
625 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 49.9 V | 2.0% |
| Vmpp | 42.6 V | 41.7 V | 2.1% |
| Isc | 15.97 A | 15.92 A | 0.3% |
| Impp | 15.03 A | 15 A | 0.2% |
| TcVoc | -0.24 %/°C | -0.24 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
630 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 50.9 V | 49.7 V | 2.4% |
| Vmpp | 42.6 V | 42.3 V | 0.7% |
| Isc | 15.97 A | 15.81 A | 1.0% |
| Impp | 15.03 A | 14.9 A | 0.9% |
| TcVoc | -0.24 %/°C | -0.23 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°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
50.9 V
Vmpp
42.6 V
Isc
15.97 A
Impp
15.03 A
TcVoc
-0.24 %/°C
TcPmax
-0.29 %/°C
Pmax
640 W
Cells
132
Length
2382 mm
Width
1134 mm
Thickness
30 mm
Weight
27.9 kg
The Trina Solar TSM-NE19R-640 is a 640 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 |
|---|---|---|---|
| TSM-NE19R-615 | 615 W | 49.3 V | 15.89 A |
| TSM-NE19R-620 | 620 W | 49.6 V | 15.91 A |
| TSM-NE19R-625 | 625 W | 49.8 V | 15.93 A |
| TSM-NE19R-630 | 630 W | 50.3 V | 15.94 A |
| TSM-NE19R-635 | 635 W | 50.5 V | 15.95 A |
| TSM-NE19R-645 | 645 W | 51.2 V | 15.99 A |
| TSM-NE19R-650 | 650 W | 51.5 V | 16.01 A |
The most critical specs to match are: cell count (must be exactly 132), Voc close to 50.9 V (within ±5%), and temperature coefficient TcVoc close to -0.24%/°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 Trina Solar TSM-NE19R-640.