Our Lead-Free Red LED Phosphor Powder (Model: SDR660DLS1) is a premium nitride-based luminescent material engineered specifically for B2B LED manufacturers requiring environmental compliance without compromising performance. This phosphor addresses two critical challenges in modern LED production: meeting stringent global environmental regulations (EU RoHS, California Prop 65) while maintaining the high purity and thermal stability demanded by quality-focused applications.
By combining 99.9% ICP-MS verified purity with complete lead-free formulation and 100 lm/W luminous efficiency, this phosphor enables manufacturers to access eco-sensitive markets while ensuring consistent batch-to-batch performance in residential lighting, commercial fixtures, and horticultural applications.
Product Advantages
Global Environmental Compliance
Fully lead-free formulation with RoHS 2.0 certification eliminates hazardous substance barriers for export to EU, North American, and other regulated markets. CE certification provides additional assurance of product safety and performance consistency—reducing compliance risks and customs clearance issues for international B2B transactions. This compliance is verified through third-party testing (ICP-MS purity analysis, RoHS component screening) provided with bulk orders.
99.9% Purity for Production Consistency
ICP-MS verified 99.9% purity minimizes impurity-related defects that cause uneven light emission and color drift between production batches. This high purity level is critical for large-scale LED manufacturing (industrial tube lights, residential bulbs, commercial downlights) where color consistency directly affects product quality and customer satisfaction. High-purity formulations contribute to reduced early-stage light decay by minimizing impurity-accelerated degradation mechanisms.
Exceptional Thermal Performance
Engineered to withstand continuous operating temperatures up to 300°C with peak stability to 500°C—maintaining consistent spectral output in high-heat environments such as industrial workshops, enclosed fixtures, and high-power LED arrays. This thermal resilience prevents the premature light decay and color shift that occur when standard phosphors are exposed to elevated temperatures during extended operation.
Optimized Particle Distribution
Controlled particle size range of 5-15 microns (D50 =14.5±2.0μm) ensures uniform dispersion with blue LED chips in 445-465nm range—eliminating agglomeration issues that create uneven light distribution. This particle specification is compatible with mainstream SMD, COB, and imitation lumen packaging processes, minimizing production retooling requirements for manufacturers.
Versatile Application Compatibility
The emission peak at 657.3±2.0nm within the 620-660nm range combines effectively with yellow and green phosphors to achieve customized color rendering indices (CRI) and color temperatures below 3000K—supporting warm-white LED applications in residential and commercial decorative lighting. The refractive index provides good matching with commonly used LED encapsulation silicones.
Long-Term Storage Stability
2-year shelf life under proper storage conditions (sealed, 15-25°C, ≤60% RH) supports extended inventory management for B2B manufacturers—maintaining purity and optical performance specifications throughout the storage period without degradation.
Technical Specifications
Category | Parameter | Value |
Optical Performance | Excitation Wavelength | 450-460 nm (optimized for blue LED chips) |
Emission Wavelength | 620-660 nm (peak: 657.3±2.0 nm) | |
Luminous Efficiency | 100 lm/W (at 25°C, 350mA drive current) | |
Chromaticity Coordinates | x=0.6772±0.003, y=0.3227±0.003 | |
Chemical Properties | Chemical Formula | (Sr, Ca)AlSiN₃:Eu |
Crystal Structure | Cubic | |
Purity | 99.9% (ICP-MS verified) | |
Safety Compliance | Lead-free, RoHS 2.0 compliant | |
Physical Properties | Particle Size | 5-15 μm (D50 =14.5±2.0 μm) |
Density | 3.8-4.0 g/cm³ | |
Tapped Density | ~3.2 g/cm³ | |
Melting Point | 1800°C | |
Thermal & Chemical Stability | Continuous Operating Temperature | Up to 300°C |
Peak Temperature Stability | Up to 500°C | |
Moisture Resistance | ≤0.1% weight gain after 1000h 85°C/85% RH test | |
Chemical Resistance | pH 4-10 stable (acid & alkali resistant) | |
Compliance | Environmental Certification | RoHS 2.0 compliant, lead-free |
Product Certification | CE certified | |
Shelf Life | Storage Duration | 24 months (sealed, 15-25°C, ≤60% RH) |
Application Scenarios
Our lead-free red phosphor serves diverse LED manufacturing applications requiring environmental compliance:
Eco-Compliant Residential & Commercial Lighting
LED bulbs, downlights, and panel lights for residential and commercial spaces where RoHS compliance is mandatory for market access. The lead-free formulation meets EU environmental directives and California Prop 65 requirements, while 99.9% purity ensures warm, consistent red light contribution to overall color temperature and CRI targets.
Industrial LED Tube Lights & Fixtures
Factory workshop lighting, warehouse tube lights, and industrial fixtures operating 12-24 hours daily. The 300°C continuous thermal stability maintains performance under extended operation in high-heat environments, while high purity reduces impurity-related light decay over the fixture's operational lifespan.
Commercial Horticultural Lighting
Hydroponic farms, vertical gardens, and greenhouse supplemental lighting where the 620-660nm wavelength range supports chlorophyll absorption during plant growth cycles. Lead-free certification is particularly important for edible crop cultivation where food safety regulations prohibit heavy metal contamination from lighting equipment.
Customized LED Solutions
Stage lighting, architectural accent lighting, and decorative LED panels requiring precise color mixing and uniform light output. High purity guarantees batch-to-batch color consistency critical for installations using multiple fixtures, while compatibility with standard blue LED chips (445-465nm) simplifies custom fixture development.
Specialty Optical Applications
Fluorescent brighteners, specialty optical films, and UV-resistant lighting systems where the phosphor's refractive index provides good matching with LED encapsulation materials and chemical stability resists UV-induced degradation during extended exposure.
Particle Size Recommendations
Based on common LED packaging requirements:
SMD Packaging: D50 ≈ 10-12 μm for optimal dispersion in automated pick-and-place processes
COB (Chip-on-Board) Arrays: D50 ≈ 12-15 μm for uniform coverage across multi-chip configurations
Imitation Lumen Packaging: D50 ≈ 8-10 μm for higher brightness density in compact designs
Custom Applications: Particle size adjustment available within 5-15 μm range upon request
Production & Integration Guidelines
To optimize performance in LED manufacturing:
Color Mixing Formulations
Combine with yellow phosphor (YAG:Ce³⁺) and/or green phosphor to achieve target color rendering index (CRI) and correlated color temperature (CCT) specifications. For warm-white applications (CCT＜3000K), contact our technical team for red-to-yellow phosphor ratio recommendations based on your specific blue LED chip characteristics.
Dispersion Process
Use vacuum degassing to eliminate air bubbles during silicone mixing. Maintain controlled stirring speeds appropriate for the particle size distribution to ensure uniform dispersion without mechanical damage to phosphor particles. The 5-15 μm range is optimized for compatibility with standard LED-grade silicone encapsulants.
Blue LED Chip Compatibility
Optimized for 445-465nm excitation wavelength range, compatible with mainstream blue LED chips from major manufacturers. Peak excitation at 450-460nm ensures maximum conversion efficiency. We offer free compatibility testing for client-specific chip wavelengths.
Curing Parameters
Compatible with silicone encapsulants requiring curing temperatures up to 150°C. The phosphor's 300°C continuous stability provides thermal margin for standard LED manufacturing processes. Verify curing profile compatibility with specific encapsulant formulations to prevent thermal stress.
Quality Control Verification
Spectral analysis: Confirm emission peak at 657.3±2.0nm
Chromaticity measurement: Verify CIE coordinates within tolerance
Purity testing: ICP-MS verification of 99.9% specification
RoHS screening: Confirm lead-free compliance
Thermal cycling: −40°C to +85°C for outdoor/automotive applications
Ordering & Logistics Information
Item | Details |
Minimum Order Quantity | 100g (negotiable for bulk orders ≥5kg with volume-based discounts) |
Packaging Format | 100g lead-free aluminum foil moisture-proof bags; bulk options: 1kg/20kg drums |
Lead Time | 5-10 working days (expedited 3-5 day shipping via DHL for urgent orders) |
Monthly Supply Capacity | 10,000 units/month (supports large-scale LED production lines) |
Payment Terms | TT (30% deposit + 70% before shipment), Western Union, WeChat Payment |
Shipping Terms | FOB Shanghai (other terms negotiable for bulk orders) |
Customization Options | Particle size tuning, wavelength fine-tuning, packaging customization, purity upgrade |
Storage Requirements | Sealed containers at 15-25°C, ≤60% RH; avoid sunlight, heat, acid/alkali exposure |
Customization Services
Service | Details | Turnaround |
Particle Size Tuning | Adjust D50 within 5-15 μm range for specific packaging processes | 3 working days (includes dispersion test report) |
Wavelength Fine-Tuning | Optimize emission within 620-660 nm for specialized applications | 5 working days (includes spectral analysis data) |
Packaging Customization | Bulk drums (1kg/20kg) or client-branded bags with logo and batch tracking | 2 working days (after design approval) |
Purity Grade Upgrade | Custom high-purity grades (99.95%) for specialty optical applications | 7 working days (includes ICP-MS certification) |
Share your target application (LED fixture type, blue chip wavelength, desired CCT/CRI) and production parameters—our technical team will provide a tailored quote and performance sample within 3 working days.
Frequently Asked Questions (FAQ)
Q1: How is the lead-free claim and 99.9% purity verified?
A1: We provide third-party test reports with each bulk order: ICP-MS analysis for purity verification and RoHS 2.0 component screening for lead-free certification. Sample orders include simplified test certificates showing key specifications.
Q2: Is this phosphor compatible with my specific blue LED chips?
A2: Yes, optimized for the standard 445-465nm wavelength range used by major LED chip manufacturers. We offer free compatibility testing—send us your chip specifications (wavelength, drive current) and we'll verify performance match with test data.
Q3: What distinguishes this lead-free phosphor from traditional alternatives?
A3: Beyond environmental compliance enabling access to regulated markets (EU, California), our 99.9% purity formulation provides superior material consistency. The impurity-free composition contributes to better thermal stability under high-temperature operation compared to materials with unverified purity levels.
Q4: What quality guarantee do you provide?
A4: 30-day quality guarantee covering purity, emission wavelength, and thermal stability specifications. If the product fails to meet agreed specifications under proper handling and storage conditions, we provide free replacement or full refund.
Q5: Can I obtain samples for LED fixture compatibility testing?
A5: Yes. We provide 10-50g evaluation samples for qualified B2B manufacturers (free samples available for qualified clients; shipping costs apply). Each sample includes a technical datasheet with spectral characteristics, chromaticity coordinates, and integration guidelines.
Q6: How does moisture resistance affect LED fixture reliability?
A6: The ≤0.1% weight gain specification after 1000-hour testing at 85°C/85% RH indicates excellent moisture resistance—preventing hygroscopic degradation that causes light decay in humid environments. This specification is particularly important for fixtures installed in bathrooms, outdoor applications, or tropical climates.
Q7: What blue LED chip wavelengths provide optimal performance?
A7: Peak performance occurs with 450-460nm excitation (matching the phosphor's optimal absorption range), but the phosphor functions effectively across the broader 445-465nm range covering most commercial blue LED chips. Performance variation is typically minimal across this wavelength span.
Next Steps – Request Your Sample or Get a Custom Quote
Request Free Sample: Provide your LED application details (fixture type, blue chip wavelength, target CCT/CRI), and we'll ship evaluation samples with third-party test certificates and technical datasheets within 48 hours.
Talk to a Specialist: Need assistance with phosphor ratio calculations for specific color targets or RoHS compliance documentation for your export markets? Our technical team provides consultation on color mixing formulations, regulatory requirements, and quality control procedures.
Bulk Order or Custom Specs: We offer volume-based pricing for orders ≥5kg, custom particle size distributions, and full technical support including integration assistance for large-scale LED manufacturing projects.
[Request a Sample] | [Get a Custom Quote] | [Contact Technical Support]
