665 W IBC solar panel with 132 cells. Voc 49.68 V · Isc 16.86 A · TcVoc -0.25%/°C.
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57 panels found · 4282 panels excluded
660 W
IBC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.56 V | 0.2% |
| Vmpp | 41.76 V | 41.65 V | 0.3% |
| Isc | 16.86 A | 16.77 A | 0.5% |
| Impp | 15.92 A | 15.85 A | 0.4% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.73 V | 0.1% |
| Vmpp | 41.76 V | 41.56 V | 0.5% |
| Isc | 16.86 A | 16.56 A | 1.8% |
| Impp | 15.92 A | 15.65 A | 1.7% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
655 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.86 V | 0.4% |
| Vmpp | 41.76 V | 41.7 V | 0.1% |
| Isc | 16.86 A | 16.63 A | 1.4% |
| Impp | 15.92 A | 15.72 A | 1.3% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
655 W
IBC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.45 V | 0.5% |
| Vmpp | 41.76 V | 41.53 V | 0.6% |
| Isc | 16.86 A | 16.68 A | 1.1% |
| Impp | 15.92 A | 15.77 A | 0.9% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
645 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.6 V | 0.2% |
| Vmpp | 41.76 V | 41.42 V | 0.8% |
| Isc | 16.86 A | 16.49 A | 2.2% |
| Impp | 15.92 A | 15.58 A | 2.1% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
660 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.99 V | 0.6% |
| Vmpp | 41.76 V | 41.84 V | 0.2% |
| Isc | 16.86 A | 16.7 A | 0.9% |
| Impp | 15.92 A | 15.79 A | 0.8% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
645 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.72 V | 0.1% |
| Vmpp | 41.76 V | 42.11 V | 0.8% |
| Isc | 16.86 A | 16.5 A | 2.1% |
| Impp | 15.92 A | 15.32 A | 3.8% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.87 V | 0.4% |
| Vmpp | 41.76 V | 42.24 V | 1.1% |
| Isc | 16.86 A | 16.58 A | 1.7% |
| Impp | 15.92 A | 15.39 A | 3.3% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
650 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.77 V | 0.2% |
| Vmpp | 41.76 V | 41.43 V | 0.8% |
| Isc | 16.86 A | 16.59 A | 1.6% |
| Impp | 15.92 A | 15.69 A | 1.4% |
| TcVoc | -0.25 %/°C | -0.24 %/°C | ±0.010 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
665 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 50.12 V | 0.9% |
| Vmpp | 41.76 V | 41.98 V | 0.5% |
| Isc | 16.86 A | 16.77 A | 0.5% |
| Impp | 15.92 A | 15.86 A | 0.4% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
645 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.89 V | 0.4% |
| Vmpp | 41.76 V | 41.21 V | 1.3% |
| Isc | 16.86 A | 16.55 A | 1.8% |
| Impp | 15.92 A | 15.66 A | 1.6% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
650 W
IBC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.68 V | 49.33 V | 0.7% |
| Vmpp | 41.76 V | 41.42 V | 0.8% |
| Isc | 16.86 A | 16.59 A | 1.6% |
| Impp | 15.92 A | 15.69 A | 1.4% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°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
49.68 V
Vmpp
41.76 V
Isc
16.86 A
Impp
15.92 A
TcVoc
-0.25 %/°C
TcPmax
-0.29 %/°C
Pmax
665 W
Cells
132
Bifaciality
70%
Length
2382 mm
Width
1134 mm
Thickness
30 mm
Weight
33.5 kg
The Ulica Solar UL-665M-132DDGB is a 665 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 |
|---|---|---|---|
| UL-640M-132DDGB | 640 W | 49.11 V | 16.41 A |
| UL-645M-132DDGB | 645 W | 49.22 V | 16.5 A |
| UL-650M-132DDGB | 650 W | 49.33 V | 16.59 A |
| UL-655M-132DDGB | 655 W | 49.45 V | 16.68 A |
| UL-660M-132DDGB | 660 W | 49.56 V | 16.77 A |
The most critical specs to match are: cell count (must be exactly 132), Voc close to 49.68 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 Ulica Solar UL-665M-132DDGB.