Find replacement for TommaTech TT620-132TNB12R

620 W TOPCon solar panel with 132 cells. Voc 48.99 V · Isc 16.02 A · TcVoc -0.26%/°C.

Original Panel

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Same technology onlyShow only panels with matching cell technology

Compatible Replacements

34 panels found · 3396 panels excluded

TommaTech TT620-132TNB12R G2G

620 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	48.99 V	48.99 V	0.0%
Vmpp	41.02 V	41.02 V	0.0%
Isc	16.02 A	16.02 A	0.0%
Impp	15.12 A	15.12 A	0.0%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.3 %/°C	-0.3 %/°C	±0.000 %/°C

TommaTech TT625-132TNB12R G2G

625 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.19 V	0.4%
Vmpp	41.02 V	41.22 V	0.5%
Isc	16.02 A	16.08 A	0.4%
Impp	15.12 A	15.17 A	0.3%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.3 %/°C	-0.3 %/°C	±0.000 %/°C

TommaTech TT625-132TNB12R

625 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.19 V	0.4%
Vmpp	41.02 V	41.22 V	0.5%
Isc	16.02 A	16.08 A	0.4%
Impp	15.12 A	15.17 A	0.3%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.3 %/°C	-0.3 %/°C	±0.000 %/°C

TommaTech TT630-132TNB12R G2G

630 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.39 V	0.8%
Vmpp	41.02 V	41.42 V	1.0%
Isc	16.02 A	16.14 A	0.7%
Impp	15.12 A	15.22 A	0.7%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.3 %/°C	-0.3 %/°C	±0.000 %/°C

TommaTech TT630-132TNB12R

630 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.39 V	0.8%
Vmpp	41.02 V	41.42 V	1.0%
Isc	16.02 A	16.14 A	0.7%
Impp	15.12 A	15.22 A	0.7%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.3 %/°C	-0.3 %/°C	±0.000 %/°C

Trina Solar TSM-NE19R.70-610

610 W

TOPCon

82Good match

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49 V	0.0%
Vmpp	41.02 V	40.8 V	0.5%
Isc	16.02 A	15.86 A	1.0%
Impp	15.12 A	14.96 A	1.1%
TcVoc	-0.26 %/°C	-0.24 %/°C	±0.020 %/°C
TcPmax	-0.3 %/°C	-0.29 %/°C	±0.010 %/°C

Trina Solar TSM-NEG19R.20-610

610 W

TOPCon

82Good match

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49 V	0.0%
Vmpp	41.02 V	40.8 V	0.5%
Isc	16.02 A	15.86 A	1.0%
Impp	15.12 A	14.96 A	1.1%
TcVoc	-0.26 %/°C	-0.24 %/°C	±0.020 %/°C
TcPmax	-0.3 %/°C	-0.29 %/°C	±0.010 %/°C

Trina Solar TSM-NE19R-615

615 W

TOPCon

77Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.3 V	0.6%
Vmpp	41.02 V	41.1 V	0.2%
Isc	16.02 A	15.89 A	0.8%
Impp	15.12 A	14.98 A	0.9%
TcVoc	-0.26 %/°C	-0.24 %/°C	±0.020 %/°C
TcPmax	-0.3 %/°C	-0.29 %/°C	±0.010 %/°C

Trina Solar TSM-NEG19R.20-615

615 W

TOPCon

77Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.3 V	0.6%
Vmpp	41.02 V	41.1 V	0.2%
Isc	16.02 A	15.89 A	0.8%
Impp	15.12 A	14.98 A	0.9%
TcVoc	-0.26 %/°C	-0.24 %/°C	±0.020 %/°C
TcPmax	-0.3 %/°C	-0.29 %/°C	±0.010 %/°C

Trina Solar TSM-NE19R.70-615

615 W

TOPCon

77Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.3 V	0.6%
Vmpp	41.02 V	41.1 V	0.2%
Isc	16.02 A	15.89 A	0.8%
Impp	15.12 A	14.98 A	0.9%
TcVoc	-0.26 %/°C	-0.24 %/°C	±0.020 %/°C
TcPmax	-0.3 %/°C	-0.29 %/°C	±0.010 %/°C

TommaTech TT635-132TNB12R G2G

635 W

TOPCon

75Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.59 V	1.2%
Vmpp	41.02 V	41.62 V	1.5%
Isc	16.02 A	16.2 A	1.1%
Impp	15.12 A	15.26 A	0.9%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.3 %/°C	-0.3 %/°C	±0.000 %/°C

TommaTech TT635-132TNB12R

635 W

TOPCon

75Acceptable

Parameter	Original	Replacement	Deviation
Voc	48.99 V	49.59 V	1.2%
Vmpp	41.02 V	41.62 V	1.5%
Isc	16.02 A	16.2 A	1.1%
Impp	15.12 A	15.26 A	0.9%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.3 %/°C	-0.3 %/°C	±0.000 %/°C

String Compatibility Calculator

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Panel Matcher

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Original Panel Specs

Voc

48.99 V

Vmpp

41.02 V

Isc

16.02 A

Impp

15.12 A

TcVoc

-0.26 %/°C

TcPmax

-0.3 %/°C

Pmax

620 W

Cells

132

Length

2382 mm

Width

1134 mm

Thickness

35 mm

Weight

31.1 kg

The TommaTech TT620-132TNB12R is a 620 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
625 W	49.19 V	16.08 A
630 W	49.39 V	16.14 A
635 W	49.59 V	16.2 A
640 W	49.79 V	16.26 A
645 W	49.99 V	16.32 A
650 W	50.19 V	16.38 A
655 W	50.39 V	16.44 A

Frequently Asked Questions

What specs must match when replacing the TommaTech TT620-132TNB12R?

The most critical specs to match are: cell count (must be exactly 132), Voc close to 48.99 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 TT620-132TNB12R?

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 TT620-132TNB12R.