Find replacement for Trina Solar TSM-390 DE09.05

390 W PERC solar panel with 120 cells. Voc 40.8 V · Isc 12.14 A · TcVoc -0.25%/°C.

Original Panel

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Same technology onlyShow only panels with matching cell technology

Compatible Replacements

9 panels found · 3691 panels excluded

Risen RSM40-8-390M

390 W

PERC

94Good match

Parameter	Original	Replacement	Deviation
Voc	40.8 V	40.69 V	0.3%
Vmpp	33.8 V	33.88 V	0.2%
Isc	12.14 A	12.21 A	0.6%
Impp	11.54 A	11.52 A	0.2%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.34 %/°C	-0.34 %/°C	±0.000 %/°C

Trina Solar TSM-385 DE09.05

385 W

PERC

90Good match

Parameter	Original	Replacement	Deviation
Voc	40.8 V	40.6 V	0.5%
Vmpp	33.8 V	33.6 V	0.6%
Isc	12.14 A	12.07 A	0.6%
Impp	11.54 A	11.46 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.34 %/°C	-0.34 %/°C	±0.000 %/°C

Trina Solar TSM-395 DE09.05

395 W

PERC

90Good match

Parameter	Original	Replacement	Deviation
Voc	40.8 V	41 V	0.5%
Vmpp	33.8 V	34 V	0.6%
Isc	12.14 A	12.21 A	0.6%
Impp	11.54 A	11.62 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.34 %/°C	-0.34 %/°C	±0.000 %/°C

Risen RSM40-8-395M

395 W

PERC

87Good match

Parameter	Original	Replacement	Deviation
Voc	40.8 V	41 V	0.5%
Vmpp	33.8 V	34.14 V	1.0%
Isc	12.14 A	12.27 A	1.1%
Impp	11.54 A	11.58 A	0.3%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.34 %/°C	-0.34 %/°C	±0.000 %/°C

Trina Solar TSM-380 DE09.05

380 W

PERC

79Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.8 V	40.4 V	1.0%
Vmpp	33.8 V	33.4 V	1.2%
Isc	12.14 A	12 A	1.2%
Impp	11.54 A	11.38 A	1.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.34 %/°C	-0.34 %/°C	±0.000 %/°C

Risen RSM40-8-400M

400 W

PERC

73Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.8 V	41.3 V	1.2%
Vmpp	33.8 V	34.39 V	1.7%
Isc	12.14 A	12.34 A	1.6%
Impp	11.54 A	11.64 A	0.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.34 %/°C	-0.34 %/°C	±0.000 %/°C

Risen RSM40-8-405M

405 W

PERC

60Acceptable

Parameter	Original	Replacement	Deviation
Voc	40.8 V	41.6 V	2.0%
Vmpp	33.8 V	34.64 V	2.5%
Isc	12.14 A	12.4 A	2.1%
Impp	11.54 A	11.7 A	1.4%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.34 %/°C	-0.34 %/°C	±0.000 %/°C

Risen RSM40-8-410M

410 W

TOPCon

54Marginal

Parameter	Original	Replacement	Deviation
Voc	40.8 V	41.9 V	2.7%
Vmpp	33.8 V	34.89 V	3.2%
Isc	12.14 A	12.47 A	2.7%
Impp	11.54 A	11.76 A	1.9%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.34 %/°C	-0.34 %/°C	±0.000 %/°C

Kopp KOPP-385Wp

385 W

PERC

34Marginal

Parameter	Original	Replacement	Deviation
Voc	40.8 V	41.78 V	2.4%
Vmpp	33.8 V	35.04 V	3.7%
Isc	12.14 A	11.53 A	5.0%
Impp	11.54 A	10.99 A	4.8%
TcVoc	-0.25 %/°C	-0.27 %/°C	±0.020 %/°C
TcPmax	-0.34 %/°C	-0.35 %/°C	±0.010 %/°C

String Compatibility Calculator

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Panel Matcher

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Original Panel Specs

Voc

40.8 V

Vmpp

33.8 V

Isc

12.14 A

Impp

11.54 A

TcVoc

-0.25 %/°C

TcPmax

-0.34 %/°C

Pmax

390 W

Cells

120

Length

1754 mm

Width

1096 mm

Thickness

30 mm

Weight

21 kg

The Trina Solar TSM-390 DE09.05 is a 390 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
380 W	40.4 V	12 A
385 W	40.6 V	12.07 A
395 W	41 V	12.21 A

Frequently Asked Questions

What specs must match when replacing the Trina Solar TSM-390 DE09.05?

The most critical specs to match are: cell count (must be exactly 120), Voc close to 40.8 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 Trina Solar TSM-390 DE09.05?

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-390 DE09.05.