Find replacement for Trina Solar TSM-NEG21C.20-735

735 W TOPCon solar panel with 132 cells. Voc 50.1 V · Isc 18.62 A · TcVoc -0.24%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

123 panels found · 4216 panels excluded

Tongwei TWMNF-66HD750

750 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.1 V	0.0%
Vmpp	41.9 V	42.02 V	0.3%
Isc	18.62 A	18.93 A	1.7%
Impp	17.55 A	17.85 A	1.7%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.28 %/°C	±0.010 %/°C

Trina Solar TSM-NEG21C.20-730

730 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.9 V	0.4%
Vmpp	41.9 V	41.7 V	0.5%
Isc	18.62 A	18.58 A	0.2%
Impp	17.55 A	17.51 A	0.2%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Trina Solar TSM-NEG21C.20-740

740 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.3 V	0.4%
Vmpp	41.9 V	42.1 V	0.5%
Isc	18.62 A	18.66 A	0.2%
Impp	17.55 A	17.58 A	0.2%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Tongwei TWMNF-66HD745

745 W

TOPCon

90Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.95 V	0.3%
Vmpp	41.9 V	41.86 V	0.1%
Isc	18.62 A	18.87 A	1.3%
Impp	17.55 A	17.8 A	1.4%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.28 %/°C	±0.010 %/°C

Luxor Solar LX-725M/210-132+ GG TOPCon

725 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.11 V	0.0%
Vmpp	41.9 V	41.39 V	1.2%
Isc	18.62 A	18.64 A	0.1%
Impp	17.55 A	17.52 A	0.2%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-725M/210-132+ GG SW ECOLINE

725 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.11 V	0.0%
Vmpp	41.9 V	41.39 V	1.2%
Isc	18.62 A	18.64 A	0.1%
Impp	17.55 A	17.52 A	0.2%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-730M/210-132+ GG TOPCon

730 W

TOPCon

85Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.36 V	0.5%
Vmpp	41.9 V	41.6 V	0.7%
Isc	18.62 A	18.68 A	0.3%
Impp	17.55 A	17.56 A	0.1%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Tongwei TWMNF-66HD740

740 W

TOPCon

85Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.8 V	0.6%
Vmpp	41.9 V	41.69 V	0.5%
Isc	18.62 A	18.81 A	1.0%
Impp	17.55 A	17.75 A	1.1%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.28 %/°C	±0.010 %/°C

Canadian Solar CS7N-750TB-AG

750 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.9 V	0.4%
Vmpp	41.9 V	42 V	0.2%
Isc	18.62 A	18.99 A	2.0%
Impp	17.55 A	17.89 A	1.9%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Sun Earth DXM12-66HBG 730W

730 W

TOPCon

82Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.99 V	0.2%
Vmpp	41.9 V	42.4 V	1.2%
Isc	18.62 A	18.21 A	2.2%
Impp	17.55 A	17.22 A	1.9%
TcVoc	-0.24 %/°C	-0.23 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Trina Solar TSM-NEG21C.20-725

725 W

TOPCon

82Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.6 V	1.0%
Vmpp	41.9 V	41.5 V	1.0%
Isc	18.62 A	18.54 A	0.4%
Impp	17.55 A	17.47 A	0.5%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Horay Solar HS730TC-MHG-D

730 W

TOPCon

82Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.8 V	0.6%
Vmpp	41.9 V	41.7 V	0.5%
Isc	18.62 A	18.56 A	0.3%
Impp	17.55 A	17.51 A	0.2%
TcVoc	-0.24 %/°C	-0.23 %/°C	±0.010 %/°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

50.1 V

Vmpp

41.9 V

Isc

18.62 A

Impp

17.55 A

TcVoc

-0.24 %/°C

TcPmax

-0.29 %/°C

Pmax

735 W

Cells

132

Bifaciality

80%

Length

2384 mm

Width

1303 mm

Thickness

33 mm

Weight

38.3 kg

The Trina Solar TSM-NEG21C.20-735 is a 735 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
TSM-NEG21C.20-695	695 W	48.3 V	18.28 A
TSM-NEG21C.20-700	700 W	48.6 V	18.32 A
TSM-NEG21C.20-705	705 W	48.8 V	18.36 A
TSM-NEG21C.20-710	710 W	49 V	18.4 A
TSM-NEG21C.20-715	715 W	49.2 V	18.44 A
TSM-NEG21C.20-720	720 W	49.4 V	18.49 A
TSM-NEG21C.20-725	725 W	49.6 V	18.54 A
TSM-NEG21C.20-730	730 W	49.9 V	18.58 A
TSM-NEG21C.20-740	740 W	50.3 V	18.66 A

Frequently Asked Questions

What specs must match when replacing the Trina Solar TSM-NEG21C.20-735?

The most critical specs to match are: cell count (must be exactly 132), Voc close to 50.1 V (within ±5%), and temperature coefficient TcVoc close to -0.24%/°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 Trina Solar TSM-NEG21C.20-735?

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 Trina Solar TSM-NEG21C.20-735.

All replacements

Find replacement for Trina Solar TSM-NEG21C.20-735

735 W TOPCon solar panel with 132 cells. Voc 50.1 V · Isc 18.62 A · TcVoc -0.24%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

123 panels found · 4216 panels excluded

Tongwei TWMNF-66HD750

750 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.1 V	0.0%
Vmpp	41.9 V	42.02 V	0.3%
Isc	18.62 A	18.93 A	1.7%
Impp	17.55 A	17.85 A	1.7%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.28 %/°C	±0.010 %/°C

Trina Solar TSM-NEG21C.20-730

730 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.9 V	0.4%
Vmpp	41.9 V	41.7 V	0.5%
Isc	18.62 A	18.58 A	0.2%
Impp	17.55 A	17.51 A	0.2%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Trina Solar TSM-NEG21C.20-740

740 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.3 V	0.4%
Vmpp	41.9 V	42.1 V	0.5%
Isc	18.62 A	18.66 A	0.2%
Impp	17.55 A	17.58 A	0.2%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Tongwei TWMNF-66HD745

745 W

TOPCon

90Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.95 V	0.3%
Vmpp	41.9 V	41.86 V	0.1%
Isc	18.62 A	18.87 A	1.3%
Impp	17.55 A	17.8 A	1.4%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.28 %/°C	±0.010 %/°C

Luxor Solar LX-725M/210-132+ GG TOPCon

725 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.11 V	0.0%
Vmpp	41.9 V	41.39 V	1.2%
Isc	18.62 A	18.64 A	0.1%
Impp	17.55 A	17.52 A	0.2%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-725M/210-132+ GG SW ECOLINE

725 W

TOPCon

89Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.11 V	0.0%
Vmpp	41.9 V	41.39 V	1.2%
Isc	18.62 A	18.64 A	0.1%
Impp	17.55 A	17.52 A	0.2%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Luxor Solar LX-730M/210-132+ GG TOPCon

730 W

TOPCon

85Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.36 V	0.5%
Vmpp	41.9 V	41.6 V	0.7%
Isc	18.62 A	18.68 A	0.3%
Impp	17.55 A	17.56 A	0.1%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Tongwei TWMNF-66HD740

740 W

TOPCon

85Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.8 V	0.6%
Vmpp	41.9 V	41.69 V	0.5%
Isc	18.62 A	18.81 A	1.0%
Impp	17.55 A	17.75 A	1.1%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.28 %/°C	±0.010 %/°C

Canadian Solar CS7N-750TB-AG

750 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.9 V	0.4%
Vmpp	41.9 V	42 V	0.2%
Isc	18.62 A	18.99 A	2.0%
Impp	17.55 A	17.89 A	1.9%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Sun Earth DXM12-66HBG 730W

730 W

TOPCon

82Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.99 V	0.2%
Vmpp	41.9 V	42.4 V	1.2%
Isc	18.62 A	18.21 A	2.2%
Impp	17.55 A	17.22 A	1.9%
TcVoc	-0.24 %/°C	-0.23 %/°C	±0.010 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Trina Solar TSM-NEG21C.20-725

725 W

TOPCon

82Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.6 V	1.0%
Vmpp	41.9 V	41.5 V	1.0%
Isc	18.62 A	18.54 A	0.4%
Impp	17.55 A	17.47 A	0.5%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Horay Solar HS730TC-MHG-D

730 W

TOPCon

82Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.8 V	0.6%
Vmpp	41.9 V	41.7 V	0.5%
Isc	18.62 A	18.56 A	0.3%
Impp	17.55 A	17.51 A	0.2%
TcVoc	-0.24 %/°C	-0.23 %/°C	±0.010 %/°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

50.1 V

Vmpp

41.9 V

Isc

18.62 A

Impp

17.55 A

TcVoc

-0.24 %/°C

TcPmax

-0.29 %/°C

Pmax

735 W

Cells

132

Bifaciality

80%

Length

2384 mm

Width

1303 mm

Thickness

33 mm

Weight

38.3 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
TSM-NEG21C.20-695	695 W	48.3 V	18.28 A
TSM-NEG21C.20-700	700 W	48.6 V	18.32 A
TSM-NEG21C.20-705	705 W	48.8 V	18.36 A
TSM-NEG21C.20-710	710 W	49 V	18.4 A
TSM-NEG21C.20-715	715 W	49.2 V	18.44 A
TSM-NEG21C.20-720	720 W	49.4 V	18.49 A
TSM-NEG21C.20-725	725 W	49.6 V	18.54 A
TSM-NEG21C.20-730	730 W	49.9 V	18.58 A
TSM-NEG21C.20-740	740 W	50.3 V	18.66 A