First Solar Inc. FS-7540A-FT1

CdTe

540 W Pmax

227.7 V Voc

3.06 A Isc

188.7 V Vmp

2.86 A Imp

19.27 % eff.

0.7746 FF

268 cells

Same test data as FS-7540A-TR1. CEC lists each frame, color and backsheet version as its own listing.

IV & PV Curves at STC (1000 W/m², 25 °C)

IV Curves at Multiple Conditions

Irradiance sweep at 25 °C

Temperature sweep at 1000 W/m²

Single-Diode Model Parameters

Source: California Energy Commission module list · retrieved via SAM library · energy.ca.gov · All data sources

Parameter	Symbol	Value	Unit
Nameplate (STC)
STC Power	STC	539.682	W
PTC Power	PTC	502.7	W
Open-circuit voltage	V_oc_ref	227.7	V
Short-circuit current	I_sc_ref	3.06	A
Max-power voltage	V_mp_ref	188.7	V
Max-power current	I_mp_ref	2.86	A
Fill factor	FF	0.7746	—
Efficiency (STC)	η	19.27	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.001453	A/°C
Voc temperature coefficient	beta_oc	-0.619116	V/°C
Pmax temperature coefficient	gamma_r	-0.2947	%/°C
NOCT	T_NOCT	48.9	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	7.99263	V
Light-generated current (ref)	I_L_ref	3.0657	A
Saturation current (ref)	I_o_ref	1.26e-12	A
Series resistance	R_s	4.83382	Ω
Shunt resistance (ref)	R_sh_ref	2594.243	Ω
Cells in series	N_s	268	—
CEC Adjust factor	Adjust	-7.119	%

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Module Specifications

Technology CdTe

Bifacial No

BIPV No

Cells in series 268

Module area 2.8 m²

NOCT 48.9 °C

Temp. coefficient of Pmax -0.295 %/°C

Temp. coefficient of Voc -0.272 %/°C

Temp. coefficient of Isc 0.047 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 23 Jun 2026 list

Measured Data

No measured data yet for this module.

Same Test Data

2 listings with identical nameplate test data, one per frame, color or backsheet version.

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