Product Overview
LD-4255 is a yellow-green phosphor specifically designed for low-power LED packaging, compatible with 455-460nm blue LED chips. This product features a 7.3μm fine particle size design with a relative brightness of up to 112.6%, making it one of the highest brightness models in the straw hat series.
LD-4255 has a color temperature of 4021K, producing natural white light output for indicator lights, small-scale lighting, and electronic backlighting applications requiring excellent dispensing consistency.
Core Advantages
⚡ High Relative Brightness 112.6% relative brightness—outstanding performance in straw hat series for demanding applications. | 📏 Fine Particle Size D50=7.3μm with good fluidity for uniform dispensing in precision packaging. |
🌡️ Natural White Light 4021K color temperature for natural, comfortable light color across various applications. | 🔵 Mainstream Chip Compatibility Compatible with 455-460nm mainstream blue LED chips for broad application range. |
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 | 546 nm Peak Wavelength |
112.6 nm FWHM | 455–460 nm Compatible Chip Wavelength |
x = 0.4256, y = 0.5487 CIE 1931 Coordinates | 7.3 μm Particle Size (D50) |
4021 K Correlated Color Temperature | 112.6% Relative Brightness |
Technical Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Product Model | LD-4255 | Low-power type |
| Emission Color | Yellow-green | — |
| CIE 1931 Coordinates | x = 0.4256, y = 0.5487 | — |
| Correlated Color Temperature (CCT) | 4021 K | Natural white |
| Dominant Wavelength | 568.4 nm | — |
| Peak Wavelength | 546 nm | Yellow-green region |
| FWHM | 112.6 nm | Broad spectrum |
| Relative Brightness | 112.6% | High brightness |
| Particle Size (D50) | 7.3 μm | Fine particle |
| Compatible Chip Wavelength | 455–460 nm | Blue LED chip |
| Suitable Packaging Type | Straw hat / DIP | Low-power type |
| Shelf Life | 24 months | Sealed storage |
| *All parameters are based on standard laboratory test conditions (25°C, 50% RH). Actual performance may vary with package design, resin system, and process conditions. | ||
Not Sure If This Is the Right Match?Explore our intelligent selection tools to find the perfect phosphor for your application, or let our experts customize a solution tailored to your specific requirements. |
Performance Analysis
📊 Spectral Characteristics LD-4255 exhibits a broadband emission spectrum with a peak at 546nm. The 112.6nm FWHM produces natural, soft white light when combined with blue LED chips. | 📉 Particle Size Distribution D50 is controlled at 7.3μm. The fine, uniform particle size distribution ensures dispensing process consistency for reliable production. |
Recommended Applications
💡 Straw Hat Type LEDs Traditional through-hole LED packages for various indicator and lighting applications. | 🔌 Piranha LEDs Piranha-style packages for automotive and signal lighting requiring natural white output. |
🔔 Indicator Lights Status indicators and small-scale lighting fixtures with high brightness requirements. | 📺 Display Backlighting Display and backlight applications requiring uniform natural white illumination. |
🚀 READY TO GET STARTED? Test This Phosphor in Your ApplicationRequest a free sample to evaluate LD-4255 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-4255?
⚡ Straw Hat High Brightness Choice 112.6% relative brightness—high luminous efficacy choice for low-power packaging applications. | 🔵 Mainstream Chip Compatible Full compatibility with 455-460nm mainstream blue LED chips for flexible sourcing. |
🌡️ Natural White Light Output 4021K color temperature for wide application scenarios from indicators to lighting, providing comfortable visual experience. | |
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)
❓ How to choose between LD-4255 and LD-4155? The main difference is compatible chip wavelength: LD-4155 is for 450-455nm, LD-4255 is for 455-460nm. Choose based on actual chip wavelength. | ❓ What does 112.6% relative brightness mean? It means under identical test conditions, LD-4255's luminous intensity is 12.6% higher than the standard reference sample, classified as high brightness grade. |
❓ Can LD-4255 be blended with other phosphors? Yes. LD-4255 can be blended with red phosphor to improve CRI or achieve different color temperatures. | ❓ Do you offer small-batch samples? Yes. We can provide 50–100g evaluation samples for testing and verification. Contact our sales team for sample requests. |
Samples & Technical Support
Get LD-4255 Technical Support and Samples TodayWe offer small-batch sample services for testing and validation before mass production. For sample requests, parameter confirmation, or application solution support, please contact our technical and sales team. |
