Solar Stack
Solar Stack
How it worksGuidesAdd Equipment
Sign in
Solar Stack

Free solar panel & inverter compatibility checker. Verify your PV string configuration is safe before installation.

Tools

  • Calculator
  • Panel Matcher
  • Inverter Finder
  • Inverter Compare
  • Panel Replacement
  • Cable sizing

Resources

  • Guides
  • How it works
  • Standards & Compliance
  • Data API
  • Replacement methodology
  • Add Equipment
  • Feedback

Legal

  • About
  • Privacy Policy
  • Terms of Service
  • Cookie Policy

© 2026 Solar Stack

All replacements

Find replacement for Yingli Solar YL655D-66f 1/2

655 W PERC solar panel with 132 cells. Voc 45.5 V · Isc 18.42 A · TcVoc -0.25%/°C.

Select the panel you want to replace

Show only panels with matching cell technology

Compatible Replacements

21 panels found · 4318 panels excluded

Yingli Solar YL650D-66f 1/2

650 W

PERC
91Good match
ParameterOriginalReplacementDeviation
Voc45.5 V45.3 V0.4%
Vmpp37.7 V37.5 V0.5%
Isc18.42 A18.36 A0.3%
Impp17.38 A17.34 A0.2%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Yingli Solar YL660D-66f 1/2

660 W

PERC
91Good match
ParameterOriginalReplacementDeviation
Voc45.5 V45.7 V0.4%
Vmpp37.7 V37.9 V0.5%
Isc18.42 A18.48 A0.3%
Impp17.38 A17.42 A0.2%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Canadian Solar CS7N-660MS

660 W

PERC
84Good match
ParameterOriginalReplacementDeviation
Voc45.5 V45.4 V0.2%
Vmpp37.7 V38.3 V1.6%
Isc18.42 A18.47 A0.3%
Impp17.38 A17.24 A0.8%
TcVoc-0.25 %/°C-0.26 %/°C±0.010 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Yingli Solar YL645D-66f 1/2

645 W

PERC
83Good match
ParameterOriginalReplacementDeviation
Voc45.5 V45.1 V0.9%
Vmpp37.7 V37.3 V1.1%
Isc18.42 A18.31 A0.6%
Impp17.38 A17.29 A0.5%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Yingli Solar YL665D-66f 1/2

665 W

PERC
83Good match
ParameterOriginalReplacementDeviation
Voc45.5 V45.9 V0.9%
Vmpp37.7 V38.1 V1.1%
Isc18.42 A18.54 A0.7%
Impp17.38 A17.46 A0.5%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Canadian Solar CS7N-665MS

665 W

PERC
82Good match
ParameterOriginalReplacementDeviation
Voc45.5 V45.6 V0.2%
Vmpp37.7 V38.5 V2.1%
Isc18.42 A18.51 A0.5%
Impp17.38 A17.28 A0.6%
TcVoc-0.25 %/°C-0.26 %/°C±0.010 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Canadian Solar CS7N-655MS

655 W

PERC
81Good match
ParameterOriginalReplacementDeviation
Voc45.5 V45.2 V0.7%
Vmpp37.7 V38.1 V1.1%
Isc18.42 A18.43 A0.1%
Impp17.38 A17.2 A1.0%
TcVoc-0.25 %/°C-0.26 %/°C±0.010 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Canadian Solar CS7N-650MS

650 W

PERC
78Acceptable
ParameterOriginalReplacementDeviation
Voc45.5 V45 V1.1%
Vmpp37.7 V37.9 V0.5%
Isc18.42 A18.39 A0.2%
Impp17.38 A17.16 A1.3%
TcVoc-0.25 %/°C-0.26 %/°C±0.010 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Canadian Solar CS7N-645MS

645 W

PERC
74Acceptable
ParameterOriginalReplacementDeviation
Voc45.5 V44.8 V1.5%
Vmpp37.7 V37.7 V0.0%
Isc18.42 A18.35 A0.4%
Impp17.38 A17.11 A1.6%
TcVoc-0.25 %/°C-0.26 %/°C±0.010 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
Yingli Solar YL670D-66f 1/2

670 W

PERC
74Acceptable
ParameterOriginalReplacementDeviation
Voc45.5 V46.1 V1.3%
Vmpp37.7 V38.3 V1.6%
Isc18.42 A18.58 A0.9%
Impp17.38 A17.5 A0.7%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C
RECOM RCM-650-8MM

650 W

PERC
74Acceptable
ParameterOriginalReplacementDeviation
Voc45.5 V45.58 V0.2%
Vmpp37.7 V37.61 V0.2%
Isc18.42 A18.16 A1.4%
Impp17.38 A17.28 A0.6%
TcVoc-0.25 %/°C-0.28 %/°C±0.030 %/°C
TcPmax-0.34 %/°C-0.36 %/°C±0.020 %/°C
Canadian Solar CS7N-670MS

670 W

PERC
74Acceptable
ParameterOriginalReplacementDeviation
Voc45.5 V45.8 V0.7%
Vmpp37.7 V38.7 V2.7%
Isc18.42 A18.55 A0.7%
Impp17.38 A17.32 A0.3%
TcVoc-0.25 %/°C-0.26 %/°C±0.010 %/°C
TcPmax-0.34 %/°C-0.34 %/°C±0.000 %/°C

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

Already have panels?

Find an inverter that fits your panel array with the right MPPT range and DC/AC ratio.

How the Algorithm Works

Learn how panels are scored and matched

Original Panel Specs

Voc

45.5 V

Vmpp

37.7 V

Isc

18.42 A

Impp

17.38 A

TcVoc

-0.25 %/°C

TcPmax

-0.34 %/°C

Pmax

655 W

Cells

132

Length

2384 mm

Width

1303 mm

Thickness

35 mm

Weight

34 kg

The Yingli Solar YL655D-66f 1/2 is a 655 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.

Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.

Other models in this series

ModelPowerVocIsc
YL645D-66f 1/2645 W45.1 V18.31 A
YL650D-66f 1/2650 W45.3 V18.36 A
YL660D-66f 1/2660 W45.7 V18.48 A
YL665D-66f 1/2665 W45.9 V18.54 A
YL670D-66f 1/2670 W46.1 V18.58 A

Frequently Asked Questions

What specs must match when replacing the Yingli Solar YL655D-66f 1/2?

The most critical specs to match are: cell count (must be exactly 132), Voc close to 45.5 V (within ±5%), and temperature coefficient TcVoc close to -0.25%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.

Can I use a higher wattage replacement for the Yingli Solar YL655D-66f 1/2?

A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.

What happens if the replacement panel has different voltage specs?

If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original Yingli Solar YL655D-66f 1/2.