620 W TOPCon solar panel with 156 cells. Voc 55.5 V · Isc 14.21 A · TcVoc -0.25%/°C.
Select the panel you want to replace
Panel not in the catalogue?
59 of the 4,444 panels in the catalogue can replace RECOM RCM-620-7DBNN. Before you buy, check your pick in the string calculator with your inverter.
CloseNoticeableLarge differenceTap or click a difference to see what it means for your string.
Small differences within tolerance — safe once verified in the calculator with your inverter.
Match 80–93 % · 16 models
Noticeable differences — the string voltage and current need a careful check.
Match 60–79 % · 18 models
Large differences — a real risk of a mismatched string; prefer a closer panel.
Match 41–59 % · 25 models
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
Learn how panels are scored and matched
Voc
55.5 V
Vmpp
46.1 V
Isc
14.21 A
Impp
13.45 A
TcVoc
-0.25 %/°C
TcPmax
-0.3 %/°C
Pmax
620 W
Cells
156
Bifaciality
80%
Length
2465 mm
Width
1134 mm
Thickness
30 mm
Weight
34.5 kg
The RECOM RCM-620-7DBNN is a 620 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 |
|---|---|---|---|
| RCM-610-7DBNN | 610 W | 55.1 V | 14.11 A |
| RCM-615-7DBNN | 615 W | 55.3 V | 14.16 A |
| RCM-625-7DBNN | 625 W | 55.7 V | 14.26 A |
| RCM-630-7DBNN | 630 W | 55.9 V | 14.31 A |
| RCM-635-7DBNN | 635 W | 56.1 V | 14.36 A |
The most critical specs to match are: cell count (must be exactly 156), Voc close to 55.5 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 RECOM RCM-620-7DBNN.