Seraphim Solar System Co.Ltd. SRP-645-BTC-BG

Mono-c-Si Bifacial

645 W Pmax

50.32 V Voc

16.22 A Isc

42.11 V Vmp

15.32 A Imp

23.89 % eff.

0.7904 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	645.125	W
PTC Power	PTC	609.7	W
Open-circuit voltage	V_oc_ref	50.32	V
Short-circuit current	I_sc_ref	16.22	A
Max-power voltage	V_mp_ref	42.11	V
Max-power current	I_mp_ref	15.32	A
Fill factor	FF	0.7904	—
Efficiency (STC)	η	23.89	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.006812	A/°C
Voc temperature coefficient	beta_oc	-0.124139	V/°C
Pmax temperature coefficient	gamma_r	-0.2926	%/°C
NOCT	T_NOCT	45.8	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.74136	V
Light-generated current (ref)	I_L_ref	16.23577	A
Saturation current (ref)	I_o_ref	4.5e-12	A
Series resistance	R_s	0.17502	Ω
Shunt resistance (ref)	R_sh_ref	180.0	Ω
Cells in series	N_s	66	—
CEC Adjust factor	Adjust	-0.8212	%

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Module Specifications

Technology Mono-c-Si

Bifacial Yes

BIPV No

Cells in series 66

Module area 2.7 m²

NOCT 45.8 °C

Temp. coefficient of Pmax -0.293 %/°C

Temp. coefficient of Voc -0.247 %/°C

Temp. coefficient of Isc 0.042 %/°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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