Find replacement for TommaTech TT720-132TNB12 G2G

720 W TOPCon solar panel with 132 cells. Voc 48.6 V · Isc 18.67 A · TcVoc -0.26%/°C.

Original Panel

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Same technology onlyShow only panels with matching cell technology

Compatible Replacements

27 panels found · 3403 panels excluded

TommaTech TT720-132TNB12

720 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	48.6 V	48.6 V	0.0%
Vmpp	40.5 V	40.5 V	0.0%
Isc	18.67 A	18.67 A	0.0%
Impp	17.78 A	17.78 A	0.0%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

TommaTech TT725-132TNB12

725 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	48.6 V	48.8 V	0.4%
Vmpp	40.5 V	40.7 V	0.5%
Isc	18.67 A	18.72 A	0.3%
Impp	17.78 A	17.82 A	0.2%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

TommaTech TT725-132TNB12 G2G

725 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	48.6 V	48.8 V	0.4%
Vmpp	40.5 V	40.7 V	0.5%
Isc	18.67 A	18.72 A	0.3%
Impp	17.78 A	17.82 A	0.2%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

TommaTech TT730-132TNB12

730 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	48.6 V	49 V	0.8%
Vmpp	40.5 V	40.9 V	1.0%
Isc	18.67 A	18.76 A	0.5%
Impp	17.78 A	17.85 A	0.4%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

TommaTech TT730-132TNB12 G2G

730 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	48.6 V	49 V	0.8%
Vmpp	40.5 V	40.9 V	1.0%
Isc	18.67 A	18.76 A	0.5%
Impp	17.78 A	17.85 A	0.4%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

TommaTech TT730-132TNB12 Diamond Plus G2G

730 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	48.6 V	49 V	0.8%
Vmpp	40.5 V	40.9 V	1.0%
Isc	18.67 A	18.76 A	0.5%
Impp	17.78 A	17.85 A	0.4%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

Trina Solar TSM-NE21-700

700 W

TOPCon

77Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.6 V	48.6 V	0.0%
Vmpp	40.5 V	40.5 V	0.0%
Isc	18.67 A	18.32 A	1.9%
Impp	17.78 A	17.29 A	2.8%
TcVoc	-0.26 %/°C	-0.24 %/°C	±0.020 %/°C
TcPmax	-0.32 %/°C	-0.29 %/°C	±0.030 %/°C

Maysun Solar MS700MTDG-66HN

700 W

TOPCon

76Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.6 V	48.51 V	0.2%
Vmpp	40.5 V	40.71 V	0.5%
Isc	18.67 A	18.22 A	2.4%
Impp	17.78 A	17.2 A	3.3%
TcVoc	-0.26 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.32 %/°C	-0.29 %/°C	±0.030 %/°C

TommaTech TT735-132TNB12

735 W

TOPCon

76Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.6 V	49.2 V	1.2%
Vmpp	40.5 V	41.1 V	1.5%
Isc	18.67 A	18.8 A	0.7%
Impp	17.78 A	17.89 A	0.6%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

TommaTech TT735-132TNB12 G2G

735 W

TOPCon

76Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.6 V	49.2 V	1.2%
Vmpp	40.5 V	41.1 V	1.5%
Isc	18.67 A	18.8 A	0.7%
Impp	17.78 A	17.89 A	0.6%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

TommaTech TT735-132TNB12 Diamond Plus G2G

735 W

TOPCon

76Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.6 V	49.2 V	1.2%
Vmpp	40.5 V	41.1 V	1.5%
Isc	18.67 A	18.8 A	0.7%
Impp	17.78 A	17.89 A	0.6%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.32 %/°C	-0.32 %/°C	±0.000 %/°C

Maysun Solar MS705MTDG-66HN

705 W

TOPCon

74Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.6 V	48.76 V	0.3%
Vmpp	40.5 V	40.85 V	0.9%
Isc	18.67 A	18.26 A	2.2%
Impp	17.78 A	17.27 A	2.9%
TcVoc	-0.26 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.32 %/°C	-0.29 %/°C	±0.030 %/°C

String Compatibility Calculator

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Panel Matcher

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How the Algorithm Works

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Original Panel Specs

Voc

48.6 V

Vmpp

40.5 V

Isc

18.67 A

Impp

17.78 A

TcVoc

-0.26 %/°C

TcPmax

-0.32 %/°C

Pmax

720 W

Cells

132

Length

2384 mm

Width

1303 mm

Thickness

35 mm

Weight

37.5 kg

The TommaTech TT720-132TNB12 G2G is a 720 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

Power	Voc	Isc
725 W	48.8 V	18.72 A
730 W	49 V	18.76 A
735 W	49.2 V	18.8 A
740 W	49.4 V	18.85 A
745 W	49.6 V	18.89 A
750 W	49.8 V	18.95 A
755 W	50 V	18.99 A

Frequently Asked Questions

What specs must match when replacing the TommaTech TT720-132TNB12 G2G?

The most critical specs to match are: cell count (must be exactly 132), Voc close to 48.6 V (within ±5%), and temperature coefficient TcVoc close to -0.26%/°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 TommaTech TT720-132TNB12 G2G?

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 TommaTech TT720-132TNB12 G2G.