Win Win Precision Technology Co Ltd WST-540MGXB-E5

Mono-c-Si

541 W Pmax

49.7 V Voc

13.85 A Isc

41.7 V Vmp

12.97 A Imp

21.55 % eff.

0.7857 FF

72 cells

Same test data as WST-540MGX-E5. 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	540.849	W
PTC Power	PTC	507.6	W
Open-circuit voltage	V_oc_ref	49.7	V
Short-circuit current	I_sc_ref	13.85	A
Max-power voltage	V_mp_ref	41.7	V
Max-power current	I_mp_ref	12.97	A
Fill factor	FF	0.7857	—
Efficiency (STC)	η	21.55	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.00554	A/°C
Voc temperature coefficient	beta_oc	-0.121268	V/°C
Pmax temperature coefficient	gamma_r	-0.319	%/°C
NOCT	T_NOCT	45.0	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.77982	V
Light-generated current (ref)	I_L_ref	13.86872	A
Saturation current (ref)	I_o_ref	1.01e-11	A
Series resistance	R_s	0.18344	Ω
Shunt resistance (ref)	R_sh_ref	135.73	Ω
Cells in series	N_s	72	—
CEC Adjust factor	Adjust	8.5971	%

Actions

Open in PV Explorer Generate PAN File Datasheet not on file CEC Source Data

Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 72

Module area 2.51 m²

NOCT 45.0 °C

Temp. coefficient of Pmax -0.319 %/°C

Temp. coefficient of Voc -0.244 %/°C

Temp. coefficient of Isc 0.040 %/°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.

Similar Modules

Other manufacturers, same technology and cell count, power within 3 %.