Product Overview
LD-4255L is a yellow-green phosphor specifically designed for high-power LED packaging, compatible with 455-460nm blue LED chips. This product features an 11.98μm large particle size design—the largest particle size in the LD high-power series—with optimal settling stability.
LD-4255L delivers a relative brightness of up to 112.72% with a 4080K color temperature, producing natural white light output for high-power COB and large-size module packaging applications.
Core Advantages
🏆 Largest Particle Size in Series 11.98μm particle size with optimal settling stability for large-area packaging. | ⚡ Ultra-High Relative Brightness 112.72% relative brightness—highest in high-power series. |
🌡️ Natural White Output 4080K color temperature balancing brightness and comfort. | 🔵 Mainstream Chip Compatibility Compatible with 455-460nm mainstream blue LED chips. |
Not sure if this phosphor fits your application?Our engineers help 200+ companies find the right phosphor every month. Try our selection tool or talk to an expert. |
Key Performance Data
Yellow-green Emission Color | 545 nm Peak Wavelength |
111.4 nm FWHM | 455–460 nm Compatible Chip Wavelength |
x = 0.4223, y = 0.552 CIE 1931 Coordinates | 11.98 μm Largest Particle Size |
4080 K Correlated Color Temperature | 112.72% Highest Brightness in Series |
Technical Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Product Model | LD-4255L | High-power type |
| Emission Color | Yellow-green | — |
| CIE 1931 Coordinates | x = 0.4223, y = 0.552 | — |
| Correlated Color Temperature (CCT) | 4080 K | Natural white |
| Dominant Wavelength | 567.9 nm | — |
| Peak Wavelength | 545 nm | Yellow-green region |
| FWHM | 111.4 nm | Broad spectrum |
| Relative Brightness | 112.72% | Ultra-high brightness |
| Particle Size (D50) | 11.98 μm | Large particle size |
| Compatible Chip Wavelength | 455–460 nm | Blue LED chip |
| Suitable Packaging Type | High-power / COB | — |
| Shelf Life | 24 months | Sealed storage |
| *All parameters are based on standard laboratory test conditions. | ||
Performance Analysis
📊 Spectral Characteristics LD-4255L exhibits a broadband emission spectrum with a peak at 545nm. Combined with blue LED chips, it produces 4080K natural white light. | 📉 Particle Size Distribution D50 is controlled at 11.98μm—the largest in the LD high-power series—providing optimal settling characteristics for large-area packaging. |
Recommended Applications
💪 High-Power COB Large-scale COB modules with maximum brightness requirements. | 📦 Large-Size LED Modules Oversized LED modules for industrial and commercial use. |
🏭 High-Bay Lights Industrial high-bay lighting for warehouses and factories. | 🌙 Floodlights & High-Mast Outdoor floodlights and high-mast lighting applications. |
🚀 READY TO GET STARTED? Test This Phosphor in Your ApplicationRequest a free sample to evaluate LD-4255L in your production environment, or contact our application engineers for technical support. 🚚 Ships in 3 business days ⏰ Reply within 24 hours 📜 COA included |
Why Choose LD-4255L?
🏆 Dual Leadership 11.98μm largest particle size + 112.72% highest brightness in series. | 💪 Large-Area First Choice Large particle size provides most stable settling with lowest color ring risk. |
🌡️ Standard Natural White 4080K color temperature for wide application scenarios. | |
Packaging & Storage
| Packaging | High-seal moisture-proof bottles suitable for long-term storage and transportation |
| Storage Conditions | Store sealed in a dry, cool environment. Avoid direct sunlight, high temperature, and high humidity. |
| Usage Recommendations | Use promptly after opening; reseal unused portions to minimize moisture exposure. |
| Shelf Life | 24 months under recommended sealed storage conditions |
Frequently Asked Questions (FAQ)
❓ Why does LD-4255L have the highest brightness? LD-4255L achieves 112.72% ultra-high relative brightness through optimized formulation, while the 11.98μm large particle size ensures process stability. | ❓ What packaging processes is it suitable for? Suitable for high-power COB, large-size modules. Not recommended for small-size SMD packaging. |
❓ Can it be blended with other phosphors? Yes. LD-4255L can be blended with other phosphors for color temperature adjustment or CRI improvement. | ❓ Do you offer small-batch samples? Yes. We can provide 50–100g evaluation samples for testing and verification. |
Samples & Technical Support
Get LD-4255L Technical Support and Samples TodayWe offer small-batch sample services for testing and validation. Contact our technical and sales team. |
