Product Overview
LD-4850L is a warm white phosphor specifically designed for high-power LED packaging, compatible with 470-473nm short-wave blue LED chips. This product features a 9.6μm particle size design with a 3500K color temperature, producing warm, comfortable warm white light output.
LD-4850L features a 125.7nm wide FWHM with broad spectrum coverage, suitable for high-power lighting applications requiring warm white light effects such as hotels, commercial spaces, and residential high-power fixtures.
Core Advantages
🌡️ Warm White Output 3500K color temperature for warm, comfortable warm white effect. | 🌈 Ultra-Wide Spectrum 125.7nm FWHM for rich, soft light color with high visual comfort. |
💪 High-Power Compatibility 9.6μm particle size for stable settling, suitable for high-power packaging. | 🔵 Short-Wave Blue Matching Optimized for 470-473nm short-wave 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 Emission Color | 572.5 nm Peak Wavelength |
125.7 nm FWHM (Ultra-wide) | 470–473 nm Compatible Chip Wavelength |
x = 0.4881, y = 0.5026 CIE 1931 Coordinates | 9.6 μm Particle Size (High-power) |
3500 K Correlated Color Temperature | 85% Relative Brightness |
Technical Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Product Model | LD-4850L | High-power type |
| Emission Color | Yellow | — |
| CIE 1931 Coordinates | x = 0.4881, y = 0.5026 | — |
| Correlated Color Temperature (CCT) | 3500 K | Warm white |
| Dominant Wavelength | 576.9 nm | — |
| Peak Wavelength | 572.5 nm | Yellow region |
| FWHM | 125.7 nm | Ultra-wide spectrum |
| Relative Brightness | 85% | Stable brightness |
| Particle Size (D50) | 9.6 μm | High-power type |
| Compatible Chip Wavelength | 470–473 nm | Short-wave blue light |
| 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-4850L exhibits an ultra-broadband emission spectrum with a peak at 572.5nm (yellow region) and a FWHM of 125.7nm. Spectral characteristics are identical to LD-4850, suitable for high-power warm white applications. | 📉 Particle Size Distribution D50 is controlled at 9.6μm. The medium particle size provides stable settling characteristics, suitable for high-power packaging. |
Recommended Applications
💡 High-Power Warm White High-power warm white light sources for quality lighting. | 🏨 Hotel Lighting Hotel lobbies and guest rooms requiring warm ambiance. |
🏬 Commercial Ambient Commercial spaces creating warm, welcoming atmosphere. | 🏠 Residential High-Power Residential high-power fixtures and warm white floodlights. |
🚀 READY TO GET STARTED? Test This Phosphor in Your ApplicationRequest a free sample to evaluate LD-4850L 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-4850L?
🌡️ High-Power Warm White First Choice Ideal combination of 3500K warm white + 9.6μm high-power particle size. | 🔵 Short-Wave Blue Dedicated Best matching choice for 470-473nm chips with high efficiency. |
🌈 Rich, Comfortable Light 125.7nm ultra-wide FWHM for excellent visual experience in hospitality and residential applications. | |
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)
❓ What is the difference between LD-4850L and LD-4850? Both have identical optical parameters (color temperature, brightness, FWHM). The only difference is particle size: LD-4850L is 9.6μm (high-power), LD-4850 is 7.01μm (low-power). | ❓ What high-power warm white applications is it suitable for? Suitable for hotel lobbies, commercial spaces, residential main lights, and other scenarios requiring high-power warm white light. |
❓ Can it be blended with other phosphors? Yes. LD-4850L can be blended with other phosphors for color temperature adjustment. | ❓ Do you offer small-batch samples? Yes. We can provide 50–100g evaluation samples for testing and verification. |
Samples & Technical Support
Get LD-4850L Technical Support and Samples TodayWe offer small-batch sample services for testing and validation. Contact our technical and sales team. |
