Find replacement for Suntech STP445S-C54/Nshm

445 W TOPCon solar panel with 108 cells. Voc 39.11 V · Isc 14.49 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

236 panels found · 4103 panels excluded

Suntech STP445S-C54/Nshtb+

445 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.11 V	0.0%
Vmpp	32.87 V	32.87 V	0.0%
Isc	14.49 A	14.49 A	0.0%
Impp	13.54 A	13.54 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JA Solar JAM54D40-445/LB

445 W

TOPCon

95Exact match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.1 V	0.0%
Vmpp	32.87 V	32.65 V	0.7%
Isc	14.49 A	14.4 A	0.6%
Impp	13.54 A	13.63 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG BW CLASSIC

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG SW CLASSIC

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG BW PRO

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG BW ECOLINE

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP440S-C54/Nshtb+

440 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	38.98 V	0.3%
Vmpp	32.87 V	32.69 V	0.5%
Isc	14.49 A	14.41 A	0.6%
Impp	13.54 A	13.46 A	0.6%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP450S-C54/Nshtb+

450 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.24 V	0.3%
Vmpp	32.87 V	33.04 V	0.5%
Isc	14.49 A	14.57 A	0.6%
Impp	13.54 A	13.62 A	0.6%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JA Solar JAM54D40-450/LB

450 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.3 V	0.5%
Vmpp	32.87 V	32.82 V	0.2%
Isc	14.49 A	14.48 A	0.1%
Impp	13.54 A	13.71 A	1.3%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP450S-C54/Nshm

450 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.24 V	0.3%
Vmpp	32.87 V	33.04 V	0.5%
Isc	14.49 A	14.57 A	0.6%
Impp	13.54 A	13.62 A	0.6%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP440S-C54/Nshm

440 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	38.98 V	0.3%
Vmpp	32.87 V	32.69 V	0.5%
Isc	14.49 A	14.41 A	0.6%
Impp	13.54 A	13.46 A	0.6%
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

39.11 V

Vmpp

32.87 V

Isc

14.49 A

Impp

13.54 A

TcVoc

-0.25 %/°C

TcPmax

-0.29 %/°C

Pmax

445 W

Cells

108

Bifaciality

80%

Length

1722 mm

Width

1134 mm

Thickness

30 mm

Weight

21 kg

The Suntech STP445S-C54/Nshm is a 445 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
STP430S-C54/Nshm	430 W	38.72 V	14.25 A
STP435S-C54/Nshm	435 W	38.85 V	14.33 A
STP440S-C54/Nshm	440 W	38.98 V	14.41 A
STP450S-C54/Nshm	450 W	39.24 V	14.57 A

Frequently Asked Questions

What specs must match when replacing the Suntech STP445S-C54/Nshm?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 39.11 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 Suntech STP445S-C54/Nshm?

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 Suntech STP445S-C54/Nshm.

All replacements

Find replacement for Suntech STP445S-C54/Nshm

445 W TOPCon solar panel with 108 cells. Voc 39.11 V · Isc 14.49 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

236 panels found · 4103 panels excluded

Suntech STP445S-C54/Nshtb+

445 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.11 V	0.0%
Vmpp	32.87 V	32.87 V	0.0%
Isc	14.49 A	14.49 A	0.0%
Impp	13.54 A	13.54 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JA Solar JAM54D40-445/LB

445 W

TOPCon

95Exact match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.1 V	0.0%
Vmpp	32.87 V	32.65 V	0.7%
Isc	14.49 A	14.4 A	0.6%
Impp	13.54 A	13.63 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG BW CLASSIC

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG SW CLASSIC

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG BW PRO

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-450M/182R188-108+ GG BW ECOLINE

450 W

TOPCon

93Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.08 V	0.1%
Vmpp	32.87 V	32.63 V	0.7%
Isc	14.49 A	14.59 A	0.7%
Impp	13.54 A	13.8 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP440S-C54/Nshtb+

440 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	38.98 V	0.3%
Vmpp	32.87 V	32.69 V	0.5%
Isc	14.49 A	14.41 A	0.6%
Impp	13.54 A	13.46 A	0.6%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP450S-C54/Nshtb+

450 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.24 V	0.3%
Vmpp	32.87 V	33.04 V	0.5%
Isc	14.49 A	14.57 A	0.6%
Impp	13.54 A	13.62 A	0.6%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

JA Solar JAM54D40-450/LB

450 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.3 V	0.5%
Vmpp	32.87 V	32.82 V	0.2%
Isc	14.49 A	14.48 A	0.1%
Impp	13.54 A	13.71 A	1.3%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP450S-C54/Nshm

450 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	39.24 V	0.3%
Vmpp	32.87 V	33.04 V	0.5%
Isc	14.49 A	14.57 A	0.6%
Impp	13.54 A	13.62 A	0.6%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP440S-C54/Nshm

440 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	39.11 V	38.98 V	0.3%
Vmpp	32.87 V	32.69 V	0.5%
Isc	14.49 A	14.41 A	0.6%
Impp	13.54 A	13.46 A	0.6%
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

39.11 V

Vmpp

32.87 V

Isc

14.49 A

Impp

13.54 A

TcVoc

-0.25 %/°C

TcPmax

-0.29 %/°C

Pmax

445 W

Cells

108

Bifaciality

80%

Length

1722 mm

Width

1134 mm

Thickness

30 mm

Weight

21 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
STP430S-C54/Nshm	430 W	38.72 V	14.25 A
STP435S-C54/Nshm	435 W	38.85 V	14.33 A
STP440S-C54/Nshm	440 W	38.98 V	14.41 A
STP450S-C54/Nshm	450 W	39.24 V	14.57 A