Silfab Prime NTC 420W All-Black N-Type TOPCon Solar Panel

High-Efficiency 108 Half-Cell Solar Module with 21.5% Efficiency

420W Output | 21.5% Efficiency | N-Type TOPCon | All-Black Design
The Silfab Prime NTC SIL-420-QD is a premium 420W monocrystalline solar panel engineered for residential and commercial solar installations. Featuring advanced N-type TOPCon technology, 108 half-cut solar cells, and a sleek all-black design, this module delivers excellent energy production, enhanced durability, and long-term reliability.

Designed with improved shade tolerance, low-light performance, and temperature characteristics, the Silfab Prime NTC combines advanced solar technology with a clean appearance ideal for modern rooftops.

Product Highlights

• 420W rated output: High-efficiency solar power generation.
• 21.5% module efficiency: Excellent power production per square foot.
• N-type TOPCon technology: Advanced solar cell architecture for efficient energy conversion.
• 108 half-cut cells: Optimized module design for energy production.
• All-black appearance: Black frame, black backsheet, and dark solar cells.
• Improved shade tolerance: Designed to reduce the impact of partial shading.
• Enhanced low-light performance: Supports energy production during reduced sunlight conditions.
• Excellent temperature performance: -0.29%/°C maximum power temperature coefficient.
• Compact module dimensions: Approximately 67.8 × 44.6 inches.
• Staubli MC4 connectors: Reliable factory-installed PV connections.
• 1000V maximum system voltage: Supports compatible solar array configurations.
• 25-year extended product warranty: Available under manufacturer registration and warranty terms.
• 30-year linear power warranty: Long-term manufacturer performance coverage.

Manufacturer: Silfab Solar

Series: Silfab Prime NTC

Model: SIL-420-QD

Product Type: N-Type TOPCon Monocrystalline Solar Panel

Premium 420W Solar Power for Residential Rooftops

The Silfab Prime NTC 420W solar panel combines high-efficiency energy production with a refined all-black appearance.

With 420 watts of rated DC output and 21.5% module efficiency, the SIL-420-QD provides excellent power density for residential rooftops where available installation space matters.

Its 108 half-cell configuration and N-type TOPCon technology support efficient energy conversion, while the compact module design provides flexibility for different roof layouts.

The Silfab Prime NTC is also suitable for commercial rooftops, ground-mounted arrays, and compatible grid-tied or hybrid solar installations.

Next-Generation N-Type TOPCon Solar Technology

The SIL-420-QD features Tunnel Oxide Passivated Contact (TOPCon) solar cell technology.

This advanced N-type cell architecture improves electrical carrier collection and reduces internal energy losses, supporting higher conversion efficiency and dependable long-term performance.

TOPCon Technology Benefits

• High efficiency: 21.5% rated module efficiency.
• Improved shade tolerance: Helps manage variable sunlight across the array.
• Better low-light performance: Supports energy production during cloudy and lower-irradiance conditions.
• Reduced degradation: Designed for reliable long-term energy production.
• High-temperature performance: Helps maintain output as module temperatures increase.
• Long-term reliability: Supported by Silfab's published performance warranty.

All-Black Solar Panel Design

The Silfab Prime NTC SIL-420-QD features a sleek, all-black appearance designed to complement residential roofing materials.

The black anodized aluminum frame, dark solar cells, and black backsheet create a consistent visual appearance across the installed solar array.

Design Advantages

• Clean, modern rooftop appearance.
• Black anodized aluminum frame.
• Black multilayer PV backsheet.
• Dark N-type TOPCon solar cells.
• Compact 108 half-cell configuration.
• Suitable for visible residential roof installations.

Excellent Performance in High Temperatures

The Silfab Prime NTC 420W solar panel is designed to maintain strong performance in a wide range of climates.

Its maximum power temperature coefficient of -0.29%/°C indicates that rated power decreases by approximately 0.29% for each degree Celsius increase in cell temperature above standard test conditions.

Temperature Specifications

• Operating temperature: -40°C to +85°C.
• Pmax temperature coefficient: -0.29%/°C.
• Voc temperature coefficient: -0.24%/°C.
• Isc temperature coefficient: +0.04%/°C.
• Nominal operating cell temperature: 45°C ±2°C.

These characteristics support efficient solar energy production during warm weather and varying seasonal conditions.

Durable Construction for Long-Term Performance

The SIL-420-QD incorporates high-quality materials designed to protect the solar cells and electrical components during long-term outdoor operation.

Construction Features

• 3.2mm tempered glass: High-transmittance glass with an anti-reflective coating.
• Black anodized aluminum frame: Durable structural support and corrosion resistance.
• Multilayer backsheet: Fluorine-free design with hydrolysis and UV resistance.
• IP68 junction box: Protection against moisture and environmental exposure.
• Staubli MC4 connectors: Factory-installed solar module connectors.
• 1350mm output cables: Approximately 53.1 inches in length.
• 108 half-cut solar cells: N-type TOPCon silicon cell construction.

High Mechanical Strength and Hail Resistance

The Silfab Prime NTC is engineered to withstand demanding environmental conditions when installed with an approved mounting system.

Mechanical Performance

• Front mechanical load: 5400Pa.
• Rear mechanical load: 4000Pa.
• Hail impact resistance: 25mm hailstones traveling at 83km/h.
• Frame: Black anodized aluminum.
• Glass: 3.2mm tempered, anti-reflective.

These features support durable operation in residential and commercial rooftop solar installations.

25-Year Extended Product Warranty and 30-Year Power Warranty

Silfab Solar publishes an extendable product workmanship warranty and a 30-year linear power performance guarantee for the Prime NTC series.

The standard 12-year product workmanship warranty can be extended to 25 years through qualifying manufacturer registration and warranty conditions.

Warranty Highlights

• Product workmanship warranty: 12 years, extendable to 25 years.
• Power performance warranty: 30 years.
• End of Year 1: At least 98% of initial rated power.
• End of Year 12: At least 94.7%.
• End of Year 25: At least 90.8%.
• End of Year 30: At least 89.3%.

Ideal Solar Applications

• Residential rooftop solar systems
• All-black rooftop solar installations
• Grid-tied residential solar arrays
• Hybrid solar systems with battery storage
• Commercial rooftop solar installations
• Ground-mounted solar systems
• Solar system expansions
• Projects requiring compact, high-efficiency modules
• Installations using compatible string inverters or microinverters

Product Specifications

Solar Panel and Inverter Compatibility

The Silfab Prime NTC SIL-420-QD can be used with compatible grid-tied, hybrid, and off-grid solar power systems.

Its 420W output and electrical characteristics make it suitable for appropriately rated string inverters, microinverters, and solar charge controllers.

Key Electrical Specifications

• Rated power: 420W
• Vmp: 32.87V
• Voc: 37.68V
• Imp: 12.78A
• Isc: 13.51A
• Maximum system voltage: 1000V DC
• Maximum series fuse: 25A
• Connector: Staubli MC4

These specifications help determine inverter compatibility, solar string sizing, and PV input requirements.

Frequently Asked Questions