Find replacement for Tongwei TWMNF-66HD750

750 W TOPCon solar panel with 132 cells. Voc 50.1 V · Isc 18.93 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

52 panels found · 4287 panels excluded

Tongwei TWMNF-66HD745

745 W

TOPCon

94Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.95 V	0.3%
Vmpp	42.02 V	41.86 V	0.4%
Isc	18.93 A	18.87 A	0.3%
Impp	17.85 A	17.8 A	0.3%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

Trina Solar TSM-NEG21C.20-735

735 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.1 V	0.0%
Vmpp	42.02 V	41.9 V	0.3%
Isc	18.93 A	18.62 A	1.6%
Impp	17.85 A	17.55 A	1.7%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Trina Solar TSM-NEG21C.20-740

740 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.3 V	0.4%
Vmpp	42.02 V	42.1 V	0.2%
Isc	18.93 A	18.66 A	1.4%
Impp	17.85 A	17.58 A	1.5%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Canadian Solar CS7N-750TB-AG

750 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.9 V	0.4%
Vmpp	42.02 V	42 V	0.0%
Isc	18.93 A	18.99 A	0.3%
Impp	17.85 A	17.89 A	0.2%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Tongwei TWMNF-66HD740

740 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.8 V	0.6%
Vmpp	42.02 V	41.69 V	0.8%
Isc	18.93 A	18.81 A	0.6%
Impp	17.85 A	17.75 A	0.6%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

Trina Solar TSM-NEG21C.20-730

730 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.9 V	0.4%
Vmpp	42.02 V	41.7 V	0.8%
Isc	18.93 A	18.58 A	1.8%
Impp	17.85 A	17.51 A	1.9%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Tongwei TWMNF-66HD735

735 W

TOPCon

81Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.65 V	0.9%
Vmpp	42.02 V	41.53 V	1.2%
Isc	18.93 A	18.75 A	1.0%
Impp	17.85 A	17.7 A	0.8%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

Canadian Solar CS7N-745TB-AG

745 W

TOPCon

80Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.7 V	0.8%
Vmpp	42.02 V	41.8 V	0.5%
Isc	18.93 A	18.94 A	0.1%
Impp	17.85 A	17.85 A	0.0%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Horay Solar HS730TC-MHG-D

730 W

TOPCon

79Acceptable

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.8 V	0.6%
Vmpp	42.02 V	41.7 V	0.8%
Isc	18.93 A	18.56 A	2.0%
Impp	17.85 A	17.51 A	1.9%
TcVoc	-0.24 %/°C	-0.23 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

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

730 W

TOPCon

78Acceptable

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.36 V	0.5%
Vmpp	42.02 V	41.6 V	1.0%
Isc	18.93 A	18.68 A	1.3%
Impp	17.85 A	17.56 A	1.6%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

DMEGC DM735G12T-B66HSW

735 W

TOPCon

77Acceptable

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.74 V	0.7%
Vmpp	42.02 V	41.63 V	0.9%
Isc	18.93 A	18.75 A	1.0%
Impp	17.85 A	17.66 A	1.1%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

SunEvo Solar SE6-66HBD-755M

755 W

HJT

76Acceptable

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.16 V	0.1%
Vmpp	42.02 V	42.13 V	0.3%
Isc	18.93 A	19.06 A	0.7%
Impp	17.85 A	17.92 A	0.4%
TcVoc	-0.24 %/°C	-0.22 %/°C	±0.020 %/°C
TcPmax	-0.28 %/°C	-0.24 %/°C	±0.040 %/°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

42.02 V

Isc

18.93 A

Impp

17.85 A

TcVoc

-0.24 %/°C

TcPmax

-0.28 %/°C

Pmax

750 W

Cells

132

Bifaciality

80%

Length

2384 mm

Width

1303 mm

Thickness

33 mm

Weight

37.3 kg

The Tongwei TWMNF-66HD750 is a 750 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
TWMNF-66HD730	730 W	49.55 V	18.68 A
TWMNF-66HD735	735 W	49.65 V	18.75 A
TWMNF-66HD740	740 W	49.8 V	18.81 A
TWMNF-66HD745	745 W	49.95 V	18.87 A

Frequently Asked Questions

What specs must match when replacing the Tongwei TWMNF-66HD750?

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 Tongwei TWMNF-66HD750?

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 Tongwei TWMNF-66HD750.

All replacements

Find replacement for Tongwei TWMNF-66HD750

750 W TOPCon solar panel with 132 cells. Voc 50.1 V · Isc 18.93 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

52 panels found · 4287 panels excluded

Tongwei TWMNF-66HD745

745 W

TOPCon

94Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.95 V	0.3%
Vmpp	42.02 V	41.86 V	0.4%
Isc	18.93 A	18.87 A	0.3%
Impp	17.85 A	17.8 A	0.3%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

Trina Solar TSM-NEG21C.20-735

735 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.1 V	0.0%
Vmpp	42.02 V	41.9 V	0.3%
Isc	18.93 A	18.62 A	1.6%
Impp	17.85 A	17.55 A	1.7%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Trina Solar TSM-NEG21C.20-740

740 W

TOPCon

88Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.3 V	0.4%
Vmpp	42.02 V	42.1 V	0.2%
Isc	18.93 A	18.66 A	1.4%
Impp	17.85 A	17.58 A	1.5%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Canadian Solar CS7N-750TB-AG

750 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.9 V	0.4%
Vmpp	42.02 V	42 V	0.0%
Isc	18.93 A	18.99 A	0.3%
Impp	17.85 A	17.89 A	0.2%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Tongwei TWMNF-66HD740

740 W

TOPCon

87Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.8 V	0.6%
Vmpp	42.02 V	41.69 V	0.8%
Isc	18.93 A	18.81 A	0.6%
Impp	17.85 A	17.75 A	0.6%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

Trina Solar TSM-NEG21C.20-730

730 W

TOPCon

84Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.9 V	0.4%
Vmpp	42.02 V	41.7 V	0.8%
Isc	18.93 A	18.58 A	1.8%
Impp	17.85 A	17.51 A	1.9%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Tongwei TWMNF-66HD735

735 W

TOPCon

81Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.65 V	0.9%
Vmpp	42.02 V	41.53 V	1.2%
Isc	18.93 A	18.75 A	1.0%
Impp	17.85 A	17.7 A	0.8%
TcVoc	-0.24 %/°C	-0.24 %/°C	±0.000 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

Canadian Solar CS7N-745TB-AG

745 W

TOPCon

80Good match

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.7 V	0.8%
Vmpp	42.02 V	41.8 V	0.5%
Isc	18.93 A	18.94 A	0.1%
Impp	17.85 A	17.85 A	0.0%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

Horay Solar HS730TC-MHG-D

730 W

TOPCon

79Acceptable

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.8 V	0.6%
Vmpp	42.02 V	41.7 V	0.8%
Isc	18.93 A	18.56 A	2.0%
Impp	17.85 A	17.51 A	1.9%
TcVoc	-0.24 %/°C	-0.23 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.28 %/°C	±0.000 %/°C

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

730 W

TOPCon

78Acceptable

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.36 V	0.5%
Vmpp	42.02 V	41.6 V	1.0%
Isc	18.93 A	18.68 A	1.3%
Impp	17.85 A	17.56 A	1.6%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

DMEGC DM735G12T-B66HSW

735 W

TOPCon

77Acceptable

Parameter	Original	Replacement	Deviation
Voc	50.1 V	49.74 V	0.7%
Vmpp	42.02 V	41.63 V	0.9%
Isc	18.93 A	18.75 A	1.0%
Impp	17.85 A	17.66 A	1.1%
TcVoc	-0.24 %/°C	-0.25 %/°C	±0.010 %/°C
TcPmax	-0.28 %/°C	-0.29 %/°C	±0.010 %/°C

SunEvo Solar SE6-66HBD-755M

755 W

HJT

76Acceptable

Parameter	Original	Replacement	Deviation
Voc	50.1 V	50.16 V	0.1%
Vmpp	42.02 V	42.13 V	0.3%
Isc	18.93 A	19.06 A	0.7%
Impp	17.85 A	17.92 A	0.4%
TcVoc	-0.24 %/°C	-0.22 %/°C	±0.020 %/°C
TcPmax	-0.28 %/°C	-0.24 %/°C	±0.040 %/°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

42.02 V

Isc

18.93 A

Impp

17.85 A

TcVoc

-0.24 %/°C

TcPmax

-0.28 %/°C

Pmax

750 W

Cells

132

Bifaciality

80%

Length

2384 mm

Width

1303 mm

Thickness

33 mm

Weight

37.3 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
TWMNF-66HD730	730 W	49.55 V	18.68 A
TWMNF-66HD735	735 W	49.65 V	18.75 A
TWMNF-66HD740	740 W	49.8 V	18.81 A
TWMNF-66HD745	745 W	49.95 V	18.87 A