Hengdian Group DMEGC Magnetics DM645G12RT-B66yyy

Mono-c-Si

645 W Pmax

50.1 V Voc

16.37 A Isc

41.8 V Vmp

15.43 A Imp

23.89 % eff.

0.7864 FF

66 cells

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	644.974	W
PTC Power	PTC	607.5	W
Open-circuit voltage	V_oc_ref	50.1	V
Short-circuit current	I_sc_ref	16.37	A
Max-power voltage	V_mp_ref	41.8	V
Max-power current	I_mp_ref	15.43	A
Fill factor	FF	0.7864	—
Efficiency (STC)	η	23.89	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.007858	A/°C
Voc temperature coefficient	beta_oc	-0.117234	V/°C
Pmax temperature coefficient	gamma_r	-0.299	%/°C
NOCT	T_NOCT	46.6	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.753	V
Light-generated current (ref)	I_L_ref	16.38815	A
Saturation current (ref)	I_o_ref	6.23e-12	A
Series resistance	R_s	0.17889	Ω
Shunt resistance (ref)	R_sh_ref	161.357	Ω
Cells in series	N_s	66	—
CEC Adjust factor	Adjust	7.2715	%

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 66

Module area 2.7 m²

NOCT 46.6 °C

Temp. coefficient of Pmax -0.299 %/°C

Temp. coefficient of Voc -0.234 %/°C

Temp. coefficient of Isc 0.048 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 23 Jun 2026 list

Measured Data

No measured data yet for this module.

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