The Yingli Solar YL645DF66 f/2 is a 645 W solar panel featuring PERC cell technology. Below are the verified electrical and thermal specifications extracted from the manufacturer datasheet.

Technical Specifications

Electrical Characteristics (STC)

Peak Power (Pmax)645 W

Open-Circuit Voltage (Voc)45.1 V

Max Power Voltage (Vmpp)37.3 V

Short-Circuit Current (Isc)18.31 A

Max Power Current (Impp)17.29 A

Number of Cells132

Temperature & Physical

Temp. Coefficient Voc-0.25 %/°C

Temp. Coefficient Isc0.04 %/°C

Temp. Coefficient Pmax-0.34 %/°C

Max System Voltage1500 V

Nominal Cell Temperature (NOCT)43 °C

Cell TechnologyPERC

Bifaciality Factor70%

Max Series Fuse35 A

Power Tolerance+5%

Datasheet

Download PDF7.7 MB

Other Models in This Series

Model	Power	Voc	Isc
YL645DF66 f/2Current	645 W	45.1 V	18.31 A
YL650DF66 f/2	650 W	45.3 V	18.36 A
	655 W	45.5 V	18.42 A
	660 W	45.7 V	18.48 A
	665 W	45.9 V	18.54 A
	670 W	46.1 V	18.58 A

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