Silfab Solar Inc. SIL-420NU

Mono-c-Si

420 W Pmax

49.5 V Voc

10.81 A Isc

41.0 V Vmp

10.25 A Imp

21.44 % eff.

0.7854 FF

72 cells

Same test data as SIL-420NT. 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	420.25	W
PTC Power	PTC	388.9	W
Open-circuit voltage	V_oc_ref	49.5	V
Short-circuit current	I_sc_ref	10.81	A
Max-power voltage	V_mp_ref	41.0	V
Max-power current	I_mp_ref	10.25	A
Fill factor	FF	0.7854	—
Efficiency (STC)	η	21.44	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.002378	A/°C
Voc temperature coefficient	beta_oc	-0.145035	V/°C
Pmax temperature coefficient	gamma_r	-0.409	%/°C
NOCT	T_NOCT	44.3	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.92404	V
Light-generated current (ref)	I_L_ref	10.8133	A
Saturation current (ref)	I_o_ref	7.22e-11	A
Series resistance	R_s	0.25767	Ω
Shunt resistance (ref)	R_sh_ref	848.728	Ω
Cells in series	N_s	72	—
CEC Adjust factor	Adjust	8.2398	%

Actions

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Module Specifications

Technology Mono-c-Si

Bifacial No

BIPV No

Cells in series 72

Module area 1.96 m²

NOCT 44.3 °C

Temp. coefficient of Pmax -0.409 %/°C

Temp. coefficient of Voc -0.293 %/°C

Temp. coefficient of Isc 0.022 %/°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.

Same Test Data

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

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