Find replacement for Sonnex SNX-D54HND490M(R4)

490 W TOPCon solar panel with 108 cells. Voc 39.5 V · Isc 15.8 A · TcVoc -0.25%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

138 panels found · 4201 panels excluded

Ulica Solar UL-490M-108DDGN-FLOW

490 W

TOPCon

99Exact match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	32.87 V	0.0%
Isc	15.8 A	15.84 A	0.3%
Impp	14.91 A	14.91 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Sunpro Power SPDG490-N108R12

490 W

TOPCon

96Exact match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.49 V	0.0%
Vmpp	32.88 V	32.91 V	0.1%
Isc	15.8 A	15.75 A	0.3%
Impp	14.91 A	14.89 A	0.1%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.3 %/°C	±0.010 %/°C

Risen RSM108-11-490BNDG

490 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.61 V	0.3%
Vmpp	32.88 V	32.65 V	0.7%
Isc	15.8 A	15.74 A	0.4%
Impp	14.91 A	15.01 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Ulica Solar UL-485M-108DDGN-FLOW

485 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.34 V	0.4%
Vmpp	32.88 V	32.72 V	0.5%
Isc	15.8 A	15.78 A	0.1%
Impp	14.91 A	14.83 A	0.5%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Ulica Solar UL-495M-108DDGN-FLOW

495 W

TOPCon

91Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.67 V	0.4%
Vmpp	32.88 V	33.02 V	0.4%
Isc	15.8 A	15.9 A	0.6%
Impp	14.91 A	14.99 A	0.5%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Risen RSM108-11-495BNDG

495 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.81 V	0.8%
Vmpp	32.88 V	32.85 V	0.1%
Isc	15.8 A	15.81 A	0.1%
Impp	14.91 A	15.07 A	1.1%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

GCL-NT12R/54GDF 505

505 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.45 V	0.1%
Vmpp	32.88 V	33.36 V	1.5%
Isc	15.8 A	15.94 A	0.9%
Impp	14.91 A	15.14 A	1.5%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z16/DG-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z16/DG(BB)-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z16/DG(BW)-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z20/DG-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z20/DG(BB)-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
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

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

Original Panel Specs

Voc

39.5 V

Vmpp

32.88 V

Isc

15.8 A

Impp

14.91 A

TcVoc

-0.25 %/°C

TcPmax

-0.29 %/°C

Pmax

490 W

Cells

108

Bifaciality

80%

Length

1961 mm

Width

1134 mm

Thickness

30 mm

Weight

26.9 kg

The Sonnex SNX-D54HND490M(R4) 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

Model	Power	Voc	Isc
SNX-D54HND485M(R4)	485 W	39.2 V	15.77 A
SNX-D54HND495M(R4)	495 W	39.8 V	15.83 A
SNX-D54HND500M(R4)	500 W	40.1 V	15.86 A
SNX-D54HND505M(R4)	505 W	40.4 V	15.89 A

Frequently Asked Questions

What specs must match when replacing the Sonnex SNX-D54HND490M(R4)?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 39.5 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.

Can I use a higher wattage replacement for the Sonnex SNX-D54HND490M(R4)?

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 Sonnex SNX-D54HND490M(R4).

All replacements

Find replacement for Sonnex SNX-D54HND490M(R4)

490 W TOPCon solar panel with 108 cells. Voc 39.5 V · Isc 15.8 A · TcVoc -0.25%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

138 panels found · 4201 panels excluded

Ulica Solar UL-490M-108DDGN-FLOW

490 W

TOPCon

99Exact match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	32.87 V	0.0%
Isc	15.8 A	15.84 A	0.3%
Impp	14.91 A	14.91 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Sunpro Power SPDG490-N108R12

490 W

TOPCon

96Exact match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.49 V	0.0%
Vmpp	32.88 V	32.91 V	0.1%
Isc	15.8 A	15.75 A	0.3%
Impp	14.91 A	14.89 A	0.1%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.3 %/°C	±0.010 %/°C

Risen RSM108-11-490BNDG

490 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.61 V	0.3%
Vmpp	32.88 V	32.65 V	0.7%
Isc	15.8 A	15.74 A	0.4%
Impp	14.91 A	15.01 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Ulica Solar UL-485M-108DDGN-FLOW

485 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.34 V	0.4%
Vmpp	32.88 V	32.72 V	0.5%
Isc	15.8 A	15.78 A	0.1%
Impp	14.91 A	14.83 A	0.5%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Ulica Solar UL-495M-108DDGN-FLOW

495 W

TOPCon

91Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.67 V	0.4%
Vmpp	32.88 V	33.02 V	0.4%
Isc	15.8 A	15.9 A	0.6%
Impp	14.91 A	14.99 A	0.5%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Risen RSM108-11-495BNDG

495 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.81 V	0.8%
Vmpp	32.88 V	32.85 V	0.1%
Isc	15.8 A	15.81 A	0.1%
Impp	14.91 A	15.07 A	1.1%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

GCL-NT12R/54GDF 505

505 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.45 V	0.1%
Vmpp	32.88 V	33.36 V	1.5%
Isc	15.8 A	15.94 A	0.9%
Impp	14.91 A	15.14 A	1.5%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z16/DG-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z16/DG(BB)-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z16/DG(BW)-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z20/DG-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z20/DG(BB)-490W

490 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	39.5 V	39.5 V	0.0%
Vmpp	32.88 V	33.5 V	1.9%
Isc	15.8 A	15.58 A	1.4%
Impp	14.91 A	14.63 A	1.9%
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

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

Original Panel Specs

Voc

39.5 V

Vmpp

32.88 V

Isc

15.8 A

Impp

14.91 A

TcVoc

-0.25 %/°C

TcPmax

-0.29 %/°C

Pmax

490 W

Cells

108

Bifaciality

80%

Length

1961 mm

Width

1134 mm

Thickness

30 mm

Weight

26.9 kg

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

Model	Power	Voc	Isc
SNX-D54HND485M(R4)	485 W	39.2 V	15.77 A
SNX-D54HND495M(R4)	495 W	39.8 V	15.83 A
SNX-D54HND500M(R4)	500 W	40.1 V	15.86 A
SNX-D54HND505M(R4)	505 W	40.4 V	15.89 A