ams OSRAM SFH 4725AS 940nm High-Power IR OSLON® Black Emitter
Procurement & Engineering Highlights:
* Manufacturer: ams OSRAM (OSLON® Black Series)
* Peak Wavelength: 940 nm (Centroid Wavelength)
* Radiant Intensity: Typically 415 mW/sr @ 1A
* Beam Angle: ± 45° (90° total)
* Thermal Resistance: Low 6.8 K/W (RthJS real)
* Drive Current: Max 1500 mA (Continuous); 5000 mA (Pulsed)
* Package Size: 3.75 x 3.75 mm SMD (Industry-standard footprint)
* Stock Status: Original factory Tape & Reel; verifiable batch traceability for B2B.
Description
Product Details
ams OSRAM SFH 4725AS: 940nm High-Power IR OSLON® Black Emitter. The ams OSRAM SFH 4725AS is a high-performance infrared LED designed for demanding night vision and sensing applications. Part of the OSLON® Black family, this emitter is specifically engineered to bridge the gap between high radiant power and long-term thermal stability. Operating at a centroid wavelength of 940 nm, the SFH 4725AS provides "stealth" illumination, making it virtually invisible to the human eye-a critical requirement for covert surveillance and biometric systems.
For LED module manufacturers and security lighting designers, the SFH 4725AS offers a robust solution for high-current operation. Its ceramic package is optimized for efficient heat dissipation, allowing engineers to drive the component harder without the rapid degradation typical of lower-grade IR LEDs.
Technical Performance & Reliability Features
- Optimized 940nm Output: The 940nm wavelength is ideal for applications where the red glow of 850nm LEDs would be distracting or reveal the camera's location. It is perfectly matched with modern IR-sensitive CMOS sensors.
- Industry-Leading Thermal Management: Featuring a low thermal resistance of 6.8 K/W, the SFH 4725AS allows for high drive currents up to 1.5A. This minimizes the footprint of the heatsink required in compact CCTV or automotive sensor housings.
- Superior Radiant Intensity: This emitter delivers a high radiant flux of approximately 1030 mW at 1A, ensuring a long throw distance for night vision systems while maintaining uniform light distribution.
- Rugged OSLON® Black Packaging: Designed for industrial and automotive-grade durability, the package withstands significant thermal cycling and is suitable for both indoor and outdoor environments when integrated into IP-rated fixtures.
| Parameter | Performance Value |
| Centroid Wavelength | 940 nm |
| Total Radiant Flux | 1030 mW (Typical) |
| Radiant Intensity | 415 mW/sr |
| Forward Voltage | 2.90 V (Typical) / 3.40 V (Max) |
| Max Forward Current | 1.5 A (DC) / 5 A (Pulse) |
| Viewing Angle | 90° (Full angle) |
| Junction Temperature | Max 145 °C |
| Package Dimensions | 3.75 mm x 3.75 mm |
Targeted Applications
- Covert Surveillance (CCTV): Stealth night vision for security cameras and license plate recognition (LPR).
- Driver Monitoring Systems (DMS): IR illumination for eye-tracking and fatigue detection in automotive cabins.
- Biometric Identification: High-intensity IR sources for facial recognition and iris scanning.
- Industrial Sensing: Precision optical barriers and gesture recognition modules.
Gainer LED: Your Reliable Partner for Original OSRAM IR Components
- In the electronic component wholesale and B2B distribution sector, authenticity is the foundation of project reliability. Gainer LED specializes in the stock management of ams OSRAM infrared components, providing a secure supply chain for lighting manufacturers and original equipment manufacturers (OEMs).
- Factory-Sealed Traceability: We guarantee that all SFH 4725AS units are shipped in their original ams OSRAM moisture-barrier packaging. Every reel includes the original batch and binning labels.
- Strategic Stock for Distributors: We maintain rolling inventory to support component wholesalers and distributors, reducing lead times for recurring production runs in the Security and automotive sectors.
- Export Logistics Expertise: Our team manages the complexities of global logistics, ensuring that high-precision optoelectronic components reach your production facility safely and on schedule.
FAQ
Q: Why choose 940nm over 850nm for my security module?
A: 940nm LEDs are nearly invisible to the human eye, eliminating the "red glow" seen with 850nm LEDs. This is essential for covert military, police, or high-end residential security applications where discretion is key.
Q: Can I use standard reflow soldering for the SFH 4725AS?
A: Yes, this component is designed for standard SMT (Surface Mount Technology) processes. We recommend following the reflow profile provided in the official ams OSRAM datasheet to ensure the integrity of the ceramic package.
Q: How do I handle the high heat generated at 1.5A?
A: The SFH 4725AS has an electrically neutral thermal path. We recommend using a high-conductivity Metal Core PCB (MCPCB) and ensuring a high-quality solder bond to the thermal pad to maximize heat transfer to your secondary heatsink.
Q: Does Gainer LED provide bin-specific shipments for large-scale production?
A: Yes. For large projects, we can coordinate shipments from the same binning group to ensure identical radiant intensity and forward voltage characteristics across your entire manufacturing run.
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