Sunceco SEM 335 Diamond
Sunceco SEM 335 Diamond
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Sunceco SEM 335 Diamond

Sunceco SEM 335 Diamond

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In Stock

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9+ sold

In the last 7 days

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Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Sunceco SEM 335 Diamond 335W Monocrystalline Mono Solar Panel

Model SEM 335 Diamond | Mono-crystalline | 72 Full-Cell Silicon | Monofacial | 1000V System Voltage

335 W
Max Power Output
19.34%
Module Efficiency
72
N-Type TOPCon

Product Overview

The Sunceco SEM 335 Diamond monocrystalline solar panel delivers up to 335 watts of reliable power in a compact footprint. This high efficiency module is part of Sunceco’s Diamond Series, engineered for residential, commercial and light industrial rooftops. With module efficiency up to 19.34%, it helps maximize energy yield where roof space is limited or premium. The advanced mono-crystalline cell design supports strong performance at low irradiance and in real world conditions. A robust anodized aluminum frame and 3.2 mm reinforced glass protect the module from wind, snow and hail impact. The panel is rated for a power range from 315 to 345 Wp across the series, giving system designers flexible sizing options. Long term output is backed by a 15 year product warranty and a performance warranty of 90% at year 12 and 80% at year 25. The Sunceco SEM 335 Diamond solar panel offers a bankable, PID free solution that supports dependable clean energy generation. Installation is simplified by MC4 compatible connectors and 4 mm² PV cables, ensuring fast and secure electrical integration. This module has been designed for projects that require proven performance, strong warranties and dependable long term returns.

Key Benefits

High power density for limited roof space: With 335 W output and up to 19.34% efficiency, more energy is produced per square meter. This supports higher system capacity on constrained residential and commercial roofs.

Reliable long term performance: The degradation rate is only 0.8% per year under standard assumptions. Power output is warranted at 90% after 12 years and 80% after 25 years for predictable energy yields.

Rugged construction for harsh weather: The panel uses 3.2 mm high transmittance tempered glass and an anodized aluminum alloy frame. It withstands heavy wind and snow loads, as well as sand, dust, salt mist and ammonia exposure.

Stable output in real world conditions: Outstanding low irradiance behavior helps maintain production during cloudy weather and early morning or late afternoon. Optimized temperature coefficients support better performance on hot days.

Bankable, quality assured module: Each panel undergoes triple 100% electroluminescence testing to detect cell defects. The module is PID free and backed by recognized international certifications for added project bankability.

How It Works

The Sunceco SEM 335 Diamond solar panel converts sunlight into usable DC electricity through high quality monocrystalline cells. When sunlight hits the silicon cells, photons transfer energy to electrons within the cell structure. This energy release creates an electrical current that flows through the interconnected cell matrix and busbars. At standard test conditions, the module delivers 335 watts at around 36.86 volts and 9.09 amps. Under nominal operating cell temperature, it produces about 249 watts at 32.95 volts and 7.56 amps. The panel connects to a solar inverter using MC4 compatible connectors and 4 mm² PV cables for a secure DC connection. The inverter then converts the DC power into AC power suitable for household or commercial loads. Any excess production can be directed to battery storage or exported to the grid, depending on the system design. Built in weather resistant materials and IP67 junction box protection help keep the power generation process stable over many years. Optimized temperature coefficients and low irradiance response support consistent output in changing climates and light levels.

Monocrystalline energy conversion: The panel uses mono-crystalline silicon solar cells arranged in a high density layout. Each cell creates a voltage difference when exposed to sunlight, and interconnected cells combine to deliver the 335 W rated output under test conditions.

Optimized operation across temperatures: The module operates between -40°C and 85°C with a nominal cell temperature of 42 ± 3°C. Temperature coefficients for Pmax, Voc and Isc limit performance loss in heat, supporting more stable yields across seasons.

System integration and protection: A maximum system voltage of 1000 V allows connection into common string inverter architectures. The IP67 junction box, robust frame and reinforced glass help protect internal components so current flow remains safe and consistent over the warranty lifetime.

Technical Specifications

Manufacturer Sunceco Inc., United States
Model Name SEM 335 Diamond – Diamond Series
Cell Technology and Type Mono-crystalline silicon, monofacial configuration
Power Range (Diamond Series) 315 Wp to 345 Wp
Maximum Power Pmax (STC) 335 Wp
Module Efficiency (STC) 19.34%
Power Tolerance 0 / +5 W, positive only
Voltage at Maximum Power Vmpp (STC) 36.86 V
Current at Maximum Power Impp (STC) 9.09 A
Open Circuit Voltage Voc (STC) 43.98 V
Short Circuit Current Isc (STC) 9.54 A
Maximum Power Pmax (NMOT) 249 Wp
Voltage at Maximum Power Vmpp (NMOT) 32.95 V
Current at Maximum Power Impp (NMOT) 7.56 A
Open Circuit Voltage Voc (NMOT) 40.23 V
Short Circuit Current Isc (NMOT) 7.91 A
Nominal Operating Cell Temperature 42 ± 3 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.308 % / °C
Temperature Coefficient of Voc -0.243 % / °C
Temperature Coefficient of Isc 0.047 % / °C
Maximum System Voltage 1000 V DC
Panel Dimensions (H × W × D) 1762 × 983 × 35 mm
Weight 19.5 kg
Front Glass 3.2 mm high transmittance tempered glass
Backsheet Anti-aging backsheet film
Frame Anodized aluminum alloy frame
Junction Box Protection Rating IP67 rated junction box
Connectors MC4 compatible connectors
Cable Cross Section 4.0 mm² PV cables

Certifications & Compliance

Certifications: CE compliant; IEC 61215-1, IEC 61215-1-1 and IEC 61215-2 for performance; IEC 61730-1 and IEC 61730-2, application class A, Safety Class II; UL 1703 for North American safety compliance.
Inverter Compatibility: Suitable for most modern string and central inverters rated for 1000 V DC systems. Compatibility should be verified against inverter input voltage and current limits during system design.
Environmental: Designed as PID free with advanced surface texturing and resistance to sand and dust abrasion. Tested for safety under salt mist and ammonia corrosion environments, with wind load up to 3800 Pa and snow load up to 5400 Pa per module.
Warranty: 15 years manufacturing product warranty on materials and workmanship. Performance warranty guarantees at least 90% of rated power at year 12 and 80% of rated power at year 25, based on a controlled degradation rate of approximately 0.8% per year after the first year.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing

Customer Reviews

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Sunceco SEM 335 Diamond 335W Monocrystalline Mono Solar Panel

Model SEM 335 Diamond | Mono-crystalline | 72 Full-Cell Silicon | Monofacial | 1000V System Voltage

335 W
Max Power Output
19.34%
Module Efficiency
72
N-Type TOPCon

Product Overview

The Sunceco SEM 335 Diamond monocrystalline solar panel delivers up to 335 watts of reliable power in a compact footprint. This high efficiency module is part of Sunceco’s Diamond Series, engineered for residential, commercial and light industrial rooftops. With module efficiency up to 19.34%, it helps maximize energy yield where roof space is limited or premium. The advanced mono-crystalline cell design supports strong performance at low irradiance and in real world conditions. A robust anodized aluminum frame and 3.2 mm reinforced glass protect the module from wind, snow and hail impact. The panel is rated for a power range from 315 to 345 Wp across the series, giving system designers flexible sizing options. Long term output is backed by a 15 year product warranty and a performance warranty of 90% at year 12 and 80% at year 25. The Sunceco SEM 335 Diamond solar panel offers a bankable, PID free solution that supports dependable clean energy generation. Installation is simplified by MC4 compatible connectors and 4 mm² PV cables, ensuring fast and secure electrical integration. This module has been designed for projects that require proven performance, strong warranties and dependable long term returns.

Key Benefits

High power density for limited roof space: With 335 W output and up to 19.34% efficiency, more energy is produced per square meter. This supports higher system capacity on constrained residential and commercial roofs.

Reliable long term performance: The degradation rate is only 0.8% per year under standard assumptions. Power output is warranted at 90% after 12 years and 80% after 25 years for predictable energy yields.

Rugged construction for harsh weather: The panel uses 3.2 mm high transmittance tempered glass and an anodized aluminum alloy frame. It withstands heavy wind and snow loads, as well as sand, dust, salt mist and ammonia exposure.

Stable output in real world conditions: Outstanding low irradiance behavior helps maintain production during cloudy weather and early morning or late afternoon. Optimized temperature coefficients support better performance on hot days.

Bankable, quality assured module: Each panel undergoes triple 100% electroluminescence testing to detect cell defects. The module is PID free and backed by recognized international certifications for added project bankability.

How It Works

The Sunceco SEM 335 Diamond solar panel converts sunlight into usable DC electricity through high quality monocrystalline cells. When sunlight hits the silicon cells, photons transfer energy to electrons within the cell structure. This energy release creates an electrical current that flows through the interconnected cell matrix and busbars. At standard test conditions, the module delivers 335 watts at around 36.86 volts and 9.09 amps. Under nominal operating cell temperature, it produces about 249 watts at 32.95 volts and 7.56 amps. The panel connects to a solar inverter using MC4 compatible connectors and 4 mm² PV cables for a secure DC connection. The inverter then converts the DC power into AC power suitable for household or commercial loads. Any excess production can be directed to battery storage or exported to the grid, depending on the system design. Built in weather resistant materials and IP67 junction box protection help keep the power generation process stable over many years. Optimized temperature coefficients and low irradiance response support consistent output in changing climates and light levels.

Monocrystalline energy conversion: The panel uses mono-crystalline silicon solar cells arranged in a high density layout. Each cell creates a voltage difference when exposed to sunlight, and interconnected cells combine to deliver the 335 W rated output under test conditions.

Optimized operation across temperatures: The module operates between -40°C and 85°C with a nominal cell temperature of 42 ± 3°C. Temperature coefficients for Pmax, Voc and Isc limit performance loss in heat, supporting more stable yields across seasons.

System integration and protection: A maximum system voltage of 1000 V allows connection into common string inverter architectures. The IP67 junction box, robust frame and reinforced glass help protect internal components so current flow remains safe and consistent over the warranty lifetime.

Technical Specifications

Manufacturer Sunceco Inc., United States
Model Name SEM 335 Diamond – Diamond Series
Cell Technology and Type Mono-crystalline silicon, monofacial configuration
Power Range (Diamond Series) 315 Wp to 345 Wp
Maximum Power Pmax (STC) 335 Wp
Module Efficiency (STC) 19.34%
Power Tolerance 0 / +5 W, positive only
Voltage at Maximum Power Vmpp (STC) 36.86 V
Current at Maximum Power Impp (STC) 9.09 A
Open Circuit Voltage Voc (STC) 43.98 V
Short Circuit Current Isc (STC) 9.54 A
Maximum Power Pmax (NMOT) 249 Wp
Voltage at Maximum Power Vmpp (NMOT) 32.95 V
Current at Maximum Power Impp (NMOT) 7.56 A
Open Circuit Voltage Voc (NMOT) 40.23 V
Short Circuit Current Isc (NMOT) 7.91 A
Nominal Operating Cell Temperature 42 ± 3 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.308 % / °C
Temperature Coefficient of Voc -0.243 % / °C
Temperature Coefficient of Isc 0.047 % / °C
Maximum System Voltage 1000 V DC
Panel Dimensions (H × W × D) 1762 × 983 × 35 mm
Weight 19.5 kg
Front Glass 3.2 mm high transmittance tempered glass
Backsheet Anti-aging backsheet film
Frame Anodized aluminum alloy frame
Junction Box Protection Rating IP67 rated junction box
Connectors MC4 compatible connectors
Cable Cross Section 4.0 mm² PV cables

Certifications & Compliance

Certifications: CE compliant; IEC 61215-1, IEC 61215-1-1 and IEC 61215-2 for performance; IEC 61730-1 and IEC 61730-2, application class A, Safety Class II; UL 1703 for North American safety compliance.
Inverter Compatibility: Suitable for most modern string and central inverters rated for 1000 V DC systems. Compatibility should be verified against inverter input voltage and current limits during system design.
Environmental: Designed as PID free with advanced surface texturing and resistance to sand and dust abrasion. Tested for safety under salt mist and ammonia corrosion environments, with wind load up to 3800 Pa and snow load up to 5400 Pa per module.
Warranty: 15 years manufacturing product warranty on materials and workmanship. Performance warranty guarantees at least 90% of rated power at year 12 and 80% of rated power at year 25, based on a controlled degradation rate of approximately 0.8% per year after the first year.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing
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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

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Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Be Smart, Buy From an Authorized Dealer

When you choose Portlandia Electric Supply, you’re buying real products from a trusted company with established supplier relationships. Enjoy peace of mind with 100% manufacturer warranty coverage and lifetime customer support. In an age where online shopping is fraught with risks, it’s crucial to avoid fly-by-night websites that skirt regulations. Shop with confidence, knowing you’re getting genuine quality and reliable service.

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