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All replacements

Find replacement for JA Solar JAM48D50-490/LR

490 W TOPCon solar panel with 144 cells. Voc 36.53 V · Isc 16.88 A · TcVoc -0.22%/°C.

Select the panel you want to replace

Show only panels with matching cell technology

Compatible Replacements

9 panels found · 3701 panels excluded

JA Solar JAM48D50-485/LR

485 W

TOPCon
94Good match
ParameterOriginalReplacementDeviation
Voc36.53 V36.47 V0.2%
Vmpp30.48 V30.26 V0.7%
Isc16.88 A16.83 A0.3%
Impp16.08 A16.03 A0.3%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C
JA Solar JAM48D50-495/LR

495 W

TOPCon
94Good match
ParameterOriginalReplacementDeviation
Voc36.53 V36.6 V0.2%
Vmpp30.48 V30.7 V0.7%
Isc16.88 A16.93 A0.3%
Impp16.08 A16.12 A0.2%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C
JA Solar JAM48D51-480/LR

480 W

TOPCon
93Good match
ParameterOriginalReplacementDeviation
Voc36.53 V36.48 V0.1%
Vmpp30.48 V30.49 V0.0%
Isc16.88 A16.53 A2.1%
Impp16.08 A15.74 A2.1%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C
JA Solar JAM48D51-485/LR

485 W

TOPCon
91Good match
ParameterOriginalReplacementDeviation
Voc36.53 V36.55 V0.1%
Vmpp30.48 V30.71 V0.8%
Isc16.88 A16.58 A1.8%
Impp16.08 A15.79 A1.8%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C
JA Solar JAM48D50-480/LR

480 W

TOPCon
88Good match
ParameterOriginalReplacementDeviation
Voc36.53 V36.4 V0.4%
Vmpp30.48 V30.04 V1.4%
Isc16.88 A16.78 A0.6%
Impp16.08 A15.98 A0.6%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C
JA Solar JAM48D51-475/LR

475 W

TOPCon
87Good match
ParameterOriginalReplacementDeviation
Voc36.53 V36.42 V0.3%
Vmpp30.48 V30.26 V0.7%
Isc16.88 A16.48 A2.4%
Impp16.08 A15.7 A2.4%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C
JA Solar JAM48D50-475/LR

475 W

TOPCon
81Good match
ParameterOriginalReplacementDeviation
Voc36.53 V36.33 V0.5%
Vmpp30.48 V29.81 V2.2%
Isc16.88 A16.73 A0.9%
Impp16.08 A15.93 A0.9%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C
JA Solar JAM48D51-470/LR

470 W

TOPCon
81Good match
ParameterOriginalReplacementDeviation
Voc36.53 V36.35 V0.5%
Vmpp30.48 V30.04 V1.4%
Isc16.88 A16.43 A2.7%
Impp16.08 A15.65 A2.7%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C
JA Solar JAM48D50-470/LR

470 W

TOPCon
75Acceptable
ParameterOriginalReplacementDeviation
Voc36.53 V36.26 V0.7%
Vmpp30.48 V29.59 V2.9%
Isc16.88 A16.68 A1.2%
Impp16.08 A15.89 A1.2%
TcVoc-0.22 %/°C-0.22 %/°C±0.000 %/°C
TcPmax-0.26 %/°C-0.26 %/°C±0.000 %/°C

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

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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

Original Panel Specs

Voc

36.53 V

Vmpp

30.48 V

Isc

16.88 A

Impp

16.08 A

TcVoc

-0.22 %/°C

TcPmax

-0.26 %/°C

Pmax

490 W

Cells

144

Length

1762 mm

Width

1134 mm

Thickness

30 mm

Weight

21.5 kg

The JA Solar JAM48D50-490/LR is a 490 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.

Other models in this series

ModelPowerVocIsc
JAM48D50-470/LR470 W36.26 V16.68 A
JAM48D50-475/LR475 W36.33 V16.73 A
JAM48D50-480/LR480 W36.4 V16.78 A
JAM48D50-485/LR485 W36.47 V16.83 A
JAM48D50-495/LR495 W36.6 V16.93 A

Frequently Asked Questions

What specs must match when replacing the JA Solar JAM48D50-490/LR?

The most critical specs to match are: cell count (must be exactly 144), Voc close to 36.53 V (within ±5%), and temperature coefficient TcVoc close to -0.22%/°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.

Can I use a higher wattage replacement for the JA Solar JAM48D50-490/LR?

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.

What happens if the replacement panel has different voltage specs?

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 JAM48D50-490/LR.