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All replacements

Find replacement for LONGi LR5-54HTDB-435M

435 W HPBC solar panel with 108 cells. Voc 40.05 V · Isc 13.77 A · TcVoc -0.23%/°C.

Select the panel you want to replace

Show only panels with matching cell technology

Compatible Replacements

146 panels found · 4193 panels excluded

LONGi LR5-54HTDB-430M

430 W

HPBC
92Good match
ParameterOriginalReplacementDeviation
Voc40.05 V39.85 V0.5%
Vmpp33.47 V33.47 V0.0%
Isc13.77 A13.69 A0.6%
Impp12.92 A12.85 A0.5%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
LONGi LR5-54HTB-445M

445 W

HPBC
88Good match
ParameterOriginalReplacementDeviation
Voc40.05 V40.03 V0.0%
Vmpp33.47 V33.76 V0.9%
Isc13.77 A14.23 A3.3%
Impp12.92 A13.19 A2.1%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Perlight Solar PLM-445H8NB-108 Delta Plus

445 W

HPBC
88Good match
ParameterOriginalReplacementDeviation
Voc40.05 V40.03 V0.0%
Vmpp33.47 V33.76 V0.9%
Isc13.77 A14.24 A3.4%
Impp12.92 A13.21 A2.2%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Maysun Solar MS445BC-54HB

445 W

IBC
88Good match
ParameterOriginalReplacementDeviation
Voc40.05 V40.03 V0.0%
Vmpp33.47 V33.76 V0.9%
Isc13.77 A14.23 A3.3%
Impp12.92 A13.19 A2.1%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Horay Solar HS450TC-MHA

450 W

TOPCon
88Good match
ParameterOriginalReplacementDeviation
Voc40.05 V39.97 V0.2%
Vmpp33.47 V33.39 V0.2%
Isc13.77 A13.94 A1.2%
Impp12.92 A13.48 A4.3%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.28 %/°C±0.010 %/°C
Perlight Solar PLM-440DH8N-108 Delta Pro

440 W

HPBC
87Good match
ParameterOriginalReplacementDeviation
Voc40.05 V40.25 V0.5%
Vmpp33.47 V33.87 V1.2%
Isc13.77 A13.85 A0.6%
Impp12.92 A12.99 A0.5%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Horay Solar HS455TC-MHA

455 W

TOPCon
87Good match
ParameterOriginalReplacementDeviation
Voc40.05 V40.14 V0.2%
Vmpp33.47 V33.53 V0.2%
Isc13.77 A14.03 A1.9%
Impp12.92 A13.57 A5.0%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.28 %/°C±0.010 %/°C
LONGi LR5-54HTB-440M

440 W

HPBC
86Good match
ParameterOriginalReplacementDeviation
Voc40.05 V39.83 V0.5%
Vmpp33.47 V33.56 V0.3%
Isc13.77 A14.15 A2.8%
Impp12.92 A13.12 A1.5%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Perlight Solar PLM-440H8NB-108 Delta Plus

440 W

HPBC
86Good match
ParameterOriginalReplacementDeviation
Voc40.05 V39.83 V0.5%
Vmpp33.47 V33.56 V0.3%
Isc13.77 A14.16 A2.8%
Impp12.92 A13.13 A1.6%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Maysun Solar MS440BC-54HB

440 W

IBC
86Good match
ParameterOriginalReplacementDeviation
Voc40.05 V39.83 V0.5%
Vmpp33.47 V33.56 V0.3%
Isc13.77 A14.15 A2.8%
Impp12.92 A13.12 A1.5%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Qcells Q.TRON BLK M-G2+ 440

440 W

TOPCon
84Good match
ParameterOriginalReplacementDeviation
Voc40.05 V39.88 V0.4%
Vmpp33.47 V33.33 V0.4%
Isc13.77 A13.9 A0.9%
Impp12.92 A13.2 A2.2%
TcVoc-0.23 %/°C-0.24 %/°C±0.010 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Horay Solar HS450TC-MHO

450 W

TOPCon
82Good match
ParameterOriginalReplacementDeviation
Voc40.05 V40.1 V0.1%
Vmpp33.47 V33.64 V0.5%
Isc13.77 A14.45 A4.9%
Impp12.92 A13.38 A3.6%
TcVoc-0.23 %/°C-0.23 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.28 %/°C±0.010 %/°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

40.05 V

Vmpp

33.47 V

Isc

13.77 A

Impp

12.92 A

TcVoc

-0.23 %/°C

TcPmax

-0.29 %/°C

Pmax

435 W

Cells

108

Length

1722 mm

Width

1134 mm

Thickness

30 mm

Weight

22.5 kg

The LONGi LR5-54HTDB-435M is a 435 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
LR5-54HTDB-420M420 W39.45 V13.54 A
LR5-54HTDB-425M425 W39.45 V13.61 A
LR5-54HTDB-430M430 W39.85 V13.69 A

Frequently Asked Questions

What specs must match when replacing the LONGi LR5-54HTDB-435M?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 40.05 V (within ±5%), and temperature coefficient TcVoc close to -0.23%/°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 LONGi LR5-54HTDB-435M?

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 LONGi LR5-54HTDB-435M.