Silfab Solar Inc. SIL-420BG

Mono-c-Si

420 W Pmax

46.4 V Voc

11.4 A Isc

38.5 V Vmp

10.91 A Imp

22.58 % eff.

0.7941 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	420.035	W
PTC Power	PTC	392.8	W
Open-circuit voltage	V_oc_ref	46.4	V
Short-circuit current	I_sc_ref	11.4	A
Max-power voltage	V_mp_ref	38.5	V
Max-power current	I_mp_ref	10.91	A
Fill factor	FF	0.7941	—
Efficiency (STC)	η	22.58	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.005016	A/°C
Voc temperature coefficient	beta_oc	-0.121568	V/°C
Pmax temperature coefficient	gamma_r	-0.345	%/°C
NOCT	T_NOCT	45.4	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.7114	V
Light-generated current (ref)	I_L_ref	11.5203	A
Saturation current (ref)	I_o_ref	1.92e-11	A
Series resistance	R_s	0.23843	Ω
Shunt resistance (ref)	R_sh_ref	436.828	Ω
Cells in series	N_s	66	—
CEC Adjust factor	Adjust	8.0209	%

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 66

Module area 1.86 m²

NOCT 45.4 °C

Temp. coefficient of Pmax -0.345 %/°C

Temp. coefficient of Voc -0.262 %/°C

Temp. coefficient of Isc 0.044 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 16 Nov 2022 list

Annual degradation 0.5%/yr

Measured Data

No measured data yet for this module.

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