545 W PERC solar panel with 144 cells. Voc 49.75 V · Isc 13.93 A · TcVoc -0.275%/°C.
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97 panels found · 4242 panels excluded
545 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.76 V | 0.0% |
| Vmpp | 41.8 V | 41.9 V | 0.2% |
| Isc | 13.93 A | 13.9 A | 0.2% |
| Impp | 13.04 A | 13.02 A | 0.2% |
| TcVoc | -0.275 %/°C | -0.27 %/°C | ±0.005 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
545 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.68 V | 0.1% |
| Vmpp | 41.8 V | 41.83 V | 0.1% |
| Isc | 13.93 A | 13.91 A | 0.1% |
| Impp | 13.04 A | 13.03 A | 0.1% |
| TcVoc | -0.275 %/°C | -0.28 %/°C | ±0.005 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
545 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.67 V | 0.2% |
| Vmpp | 41.8 V | 41.85 V | 0.1% |
| Isc | 13.93 A | 13.9 A | 0.2% |
| Impp | 13.04 A | 13.03 A | 0.1% |
| TcVoc | -0.275 %/°C | -0.27 %/°C | ±0.005 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
550 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.9 V | 0.3% |
| Vmpp | 41.8 V | 41.96 V | 0.4% |
| Isc | 13.93 A | 14 A | 0.5% |
| Impp | 13.04 A | 13.11 A | 0.5% |
| TcVoc | -0.275 %/°C | -0.275 %/°C | ±0.000 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
540 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.6 V | 0.3% |
| Vmpp | 41.8 V | 41.64 V | 0.4% |
| Isc | 13.93 A | 13.86 A | 0.5% |
| Impp | 13.04 A | 12.97 A | 0.5% |
| TcVoc | -0.275 %/°C | -0.275 %/°C | ±0.000 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
550 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.82 V | 0.1% |
| Vmpp | 41.8 V | 42 V | 0.5% |
| Isc | 13.93 A | 13.97 A | 0.3% |
| Impp | 13.04 A | 13.1 A | 0.5% |
| TcVoc | -0.275 %/°C | -0.27 %/°C | ±0.005 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
550 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.8 V | 0.1% |
| Vmpp | 41.8 V | 42.2 V | 1.0% |
| Isc | 13.93 A | 13.94 A | 0.1% |
| Impp | 13.04 A | 13.04 A | 0.0% |
| TcVoc | -0.275 %/°C | -0.275 %/°C | ±0.000 %/°C |
| TcPmax | -0.35 %/°C | -0.34 %/°C | ±0.010 %/°C |
550 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.84 V | 0.2% |
| Vmpp | 41.8 V | 41.99 V | 0.5% |
| Isc | 13.93 A | 13.96 A | 0.2% |
| Impp | 13.04 A | 13.1 A | 0.5% |
| TcVoc | -0.275 %/°C | -0.28 %/°C | ±0.005 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
540 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.61 V | 0.3% |
| Vmpp | 41.8 V | 41.75 V | 0.1% |
| Isc | 13.93 A | 13.83 A | 0.7% |
| Impp | 13.04 A | 12.95 A | 0.7% |
| TcVoc | -0.275 %/°C | -0.27 %/°C | ±0.005 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
545 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.7 V | 0.1% |
| Vmpp | 41.8 V | 42.11 V | 0.7% |
| Isc | 13.93 A | 13.84 A | 0.6% |
| Impp | 13.04 A | 12.96 A | 0.6% |
| TcVoc | -0.275 %/°C | -0.275 %/°C | ±0.000 %/°C |
| TcPmax | -0.35 %/°C | -0.34 %/°C | ±0.010 %/°C |
535 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.78 V | 0.1% |
| Vmpp | 41.8 V | 41.93 V | 0.3% |
| Isc | 13.93 A | 13.52 A | 2.9% |
| Impp | 13.04 A | 12.76 A | 2.1% |
| TcVoc | -0.275 %/°C | -0.275 %/°C | ±0.000 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
540 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 49.75 V | 49.7 V | 0.1% |
| Vmpp | 41.8 V | 41.77 V | 0.1% |
| Isc | 13.93 A | 13.73 A | 1.4% |
| Impp | 13.04 A | 12.93 A | 0.8% |
| TcVoc | -0.275 %/°C | -0.285 %/°C | ±0.010 %/°C |
| TcPmax | -0.35 %/°C | -0.35 %/°C | ±0.000 %/°C |
String Compatibility Calculator
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Panel Matcher
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How the Algorithm Works
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Voc
49.75 V
Vmpp
41.8 V
Isc
13.93 A
Impp
13.04 A
TcVoc
-0.275 %/°C
TcPmax
-0.35 %/°C
Pmax
545 W
Cells
144
Length
2278 mm
Width
1134 mm
Thickness
30 mm
Weight
27.3 kg
The JA Solar JAM72S30-545/MR is a 545 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 |
|---|---|---|---|
| JAM72S30-540/MR | 540 W | 49.6 V | 13.86 A |
| JAM72S30-550/MR | 550 W | 49.9 V | 14 A |
| JAM72S30-555/MR | 555 W | 50.02 V | 14.07 A |
| JAM72S30-560/MR | 560 W | 50.15 V | 14.14 A |
| JAM72S30-565/MR | 565 W | 50.28 V | 14.21 A |
The most critical specs to match are: cell count (must be exactly 144), Voc close to 49.75 V (within ±5%), and temperature coefficient TcVoc close to -0.275%/°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 JA Solar JAM72S30-545/MR.