500 W TOPCon solar panel with 108 cells. Voc 39.9 V · Isc 15.7 A · TcVoc -0.25%/°C.
Select the panel you want to replace
Panel not in the catalogue?
197 of the 4,444 panels in the catalogue can replace DAH Solar DHN-54Z20/DG-500W. 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.
Near-identical electrics — a drop-in swap for the same string.
Match 100 % · 5 models
Small differences within tolerance — safe once verified in the calculator with your inverter.
Match 80–90 % · 60 models
Noticeable differences — the string voltage and current need a careful check.
Match 60–79 % · 93 models
Large differences — a real risk of a mismatched string; prefer a closer panel.
Match 22–59 % · 39 models
String Compatibility Calculator
Verify the replacement panel works with your inverter
Panel Matcher
Find all compatible panels for a specific inverter
Already have panels?
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
39.9 V
Vmpp
33.9 V
Isc
15.7 A
Impp
14.75 A
TcVoc
-0.25 %/°C
TcPmax
-0.29 %/°C
Pmax
500 W
Cells
108
Bifaciality
80%
Length
1962 mm
Width
1134 mm
Thickness
30 mm
Weight
26.6 kg
The DAH Solar DHN-54Z20/DG-500W is a 500 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 |
|---|---|---|---|
| DHN-54Z20/DG-490W | 490 W | 39.5 V | 15.58 A |
| DHN-54Z20/DG-495W | 495 W | 39.7 V | 15.64 A |
| DHN-54Z20/DG-505W | 505 W | 40.1 V | 15.76 A |
| DHN-54Z20/DG-510W | 510 W | 40.3 V | 15.82 A |
| DHN-54Z20/DG-515W | 515 W | 40.5 V | 15.88 A |
| DHN-54Z20/DG-520W | 520 W | 40.7 V | 15.94 A |
The most critical specs to match are: cell count (must be exactly 108), Voc close to 39.9 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 DAH Solar DHN-54Z20/DG-500W.