Silfab SIL-410-BG 410W vs Seraphim S4 Series 430W
The Silfab SIL-410-BG 410W wins this comparison by a decisive margin. It offers better long-term durability with 25-year warranty. For most residential installations, the Silfab SIL-410-BG 410W is the stronger choice.
Key Differences
- • Silfab SIL-410-BG 410W is rated at 410W while Seraphim S4 Series 430W is rated at 430W, a 20W difference.
- • Both achieve identical 21.2% module efficiency.
- • Silfab SIL-410-BG 410W comes with a 25-year product warranty vs 12 years for the other.
Specifications Breakdown
Module Efficiency
Both the Silfab SIL-410-BG 410W and Seraphim S4 Series 430W share identical 21.2% module efficiency, producing comparable power per unit area. The Silfab SIL-410-BG 410W generates 210.0 W/m² while the Seraphim S4 Series 430W generates 220.2 W/m² based on their respective panel dimensions. With matched efficiency, neither panel holds a density advantage for space-constrained rooftop installations, so other factors like warranty coverage and temperature performance become the deciding metrics.
Power Output
The Seraphim S4 Series 430W delivers 430W per panel versus 410W for the Silfab SIL-410-BG 410W, a 20W difference per module. To build an 8 kW residential system, you would need 20 Silfab SIL-410-BG 410W panels or 19 Seraphim S4 Series 430W panels. Choosing the higher-wattage option saves 1 panel, reducing total racking hardware, wiring, and installation labor costs. Higher wattage per panel is particularly valuable for commercial-scale installations where panel count directly impacts balance-of-system costs.
Temperature Coefficient
Both panels share an identical temperature coefficient of -0.34%/°C, meaning they lose power at the same rate as cell temperature rises above the 25°C standard test baseline. At 65°C cell temperature, both retain 93.2% of rated power. Neither panel has a thermal performance advantage, which makes this specification a non-factor in the comparison.
Warranty Coverage
The Silfab SIL-410-BG 410W is backed by a 25-year product warranty and 30-year performance guarantee, while the Seraphim S4 Series 430W offers 12-year product and 25-year performance coverage. The Silfab SIL-410-BG 410W provides 13 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1% first year then 0.4%/year for Silfab SIL-410-BG 410W; 1.5% first year then 0.5%/year for Seraphim S4 Series 430W), after 25 years the Silfab SIL-410-BG 410W should retain approximately 89.4% of original output versus 86.5% for the Seraphim S4 Series 430W. This 2.9 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Silfab SIL-410-BG 410W measures 1722×1134×30mm and weighs 21 kg, while the Seraphim S4 Series 430W measures 1722×1134×30mm at 21 kg. 1.95 m² of panel area for the Silfab SIL-410-BG 410W versus 1.95 m² for the Seraphim S4 Series 430W. Their weights are closely matched, so neither panel imposes a significantly different structural load on the mounting system. Similar footprints mean both panels fit comparably on standard residential rooftop configurations.
Specification Comparison
| Specification | Silfab SIL-410-BG 410W | Seraphim S4 Series 430W |
|---|---|---|
| Power | 410W | 430W |
| Efficiency | 21.2% | 21.2% |
| Power Density | 19.5 W/sq ft | 20.5 W/sq ft |
| Cell Type | PERC Mono | PERC Mono |
| Bifacial | No | No |
| Weight | 21 kg | 21 kg |
| Temp Coefficient | -0.34%/°C | -0.34%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 25 years | 12 years |
| Performance Warranty | 30 years | 25 years |
| Degradation (Year 1) | 1% | 1.5% |
| Annual Degradation | 0.4% | 0.5% |
| Country | United States | China |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: TieBoth panels achieve 21.2% module efficiency, producing identical power per square meter. Neither has an advantage in space-constrained installations.
2. Hot Climate Performance
Winner: TieBoth panels share a temperature coefficient of -0.34%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: Silfab SIL-410-BG 410WSilfab SIL-410-BG 410W leads with a 25-year product warranty versus 12 years. Silfab SIL-410-BG 410W degrades more slowly at 0.4% per year versus 0.5%. After 25 years, expect 89.4% vs 86.5% of original output for Silfab SIL-410-BG 410W and Seraphim S4 Series 430W respectively.
4. Power Output
Winner: Seraphim S4 Series 430WThe Seraphim S4 Series 430W delivers 430W versus 410W per panel — 20W more. For an 8 kW system, you need 19 panels with the higher-wattage option versus 20 panels, saving 1 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieBoth panels use PERC Mono cell technology. No technology advantage for either product.
Silfab SIL-410-BG 410W
The SIL-410-BG is Silfab's all-black residential PERC panel offering 410W with US manufacturing and a 25-year warranty.
Pros
- + US manufactured
- + All-black aesthetics
- + 25-year warranty
- + ARRA compliant
Cons
- - Standard PERC efficiency
- - Higher cost per watt
- - Limited model range
Seraphim S4 Series 430W
The Seraphim S4 Series delivers 430W using proven PERC technology at a competitive price point for residential installations.
Pros
- + Competitive pricing
- + Proven PERC technology
- + Compact design
- + Good value
Cons
- - Standard PERC efficiency
- - Shorter warranty period
- - Limited US presence
Choose Silfab SIL-410-BG 410W If...
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 25+ years
- ✓ You want maximum output retention over the system's 25-30 year lifespan
- ✓ Homeowners wanting US-made, all-black panels with Buy America compliance.
Choose Seraphim S4 Series 430W If...
- ✓ You want fewer panels to reach your target system size, reducing racking and labor costs
- ✓ Budget residential installations seeking competitive PERC pricing.
Our Recommendation
The Silfab SIL-410-BG 410W is the decisive winner in this solar panel comparison, outperforming the Seraphim S4 Series 430W in 1 of 5 dimensions. Unless you have a specific requirement that the Seraphim S4 Series 430W uniquely addresses, the Silfab SIL-410-BG 410W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, Silfab SIL-410-BG 410W or Seraphim S4 Series 430W?
The Silfab SIL-410-BG 410W wins this comparison by a decisive margin. It offers better long-term durability with 25-year warranty. For most residential installations, the Silfab SIL-410-BG 410W is the stronger choice.
Which panel is more efficient, Silfab SIL-410-BG 410W or Seraphim S4 Series 430W?
The both panels share 21.2% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.0 percentage points translates to approximately 20W per panel under standard test conditions.
Which has a better warranty, Silfab SIL-410-BG 410W or Seraphim S4 Series 430W?
The Silfab SIL-410-BG 410W comes with a 25-year product warranty and 30-year performance guarantee. The Seraphim S4 Series 430W offers 12-year product and 25-year performance warranties. Silfab SIL-410-BG 410W provides 13 additional years of product coverage.
Which panel performs better in hot weather?
The Silfab SIL-410-BG 410W has a temperature coefficient of -0.34%/°C and the Seraphim S4 Series 430W is -0.34%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Silfab SIL-410-BG 410W vs Seraphim S4 Series 430W panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Silfab SIL-410-BG 410W panels (410W each) or 19 Seraphim S4 Series 430W panels (430W each). The Seraphim S4 Series 430W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026