
ams OSRAM SFH 4250-Z Power TOPLED® 850nm High-Power Infrared LED
* Manufacturer: ams OSRAM (Original Power TOPLED® Series)
* Part Number: SFH 4250-Z
* Peak Wavelength: 850 nm (High Sensitivity for CMOS Sensors)
* Package Type: Robust PLCC-4 SMD (3.4 x 3.0 x 2.1 mm)
* Luminous Intensity: High-performance binning (Typ. 15 mW/sr @ 100mA)
* Drive Current: Rated @ 100 mA; Pulse capability up to 1000 mA
* Thermal Path: Optimized junction-to-solder point resistance (Typ. 33 K/W)
* Supply Status: Original factory Tape & Reel in stock; Full batch traceability at Gainer LED.
Description
Introduction
The ams OSRAM SFH 4250-Z is an industry-standard, high-power infrared emitter engineered for manufacturers who require a balance of radiant flux and proven environmental reliability. Built on the robust Power TOPLED® (PLCC-4) platform, this 850nm component utilizes advanced Thinfilm chip technology to deliver exceptional wall-plug efficiency (WPE). Unlike standard IR LEDs, the SFH 4250-Z is designed to handle the thermal demands of high-density PCB arrays, making it the primary choice for modern CCTV night vision, industrial light barriers, and high-speed proximity sensing.
For LED module manufacturers and contract manufacturers (EMS), the SFH 4250-Z provides a low-risk design-in path. Its standardized PLCC-4 mechanical footprint ensures immediate compatibility with automated high-speed SMT assembly lines, while its superior wavelength stability ensures that finished modules maintain uniform spectral output across their entire rated industrial lifespan.
Key Product Features
- High Sensitivity 850nm Peak: The 850nm wavelength provides the "sweet spot" for modern CMOS and CCD sensors. It offers significantly higher quantum efficiency (QE) compared to 940nm emitters, allowing security modules to capture clear images with lower power consumption.
- Superior Thermal Path Reliability: Featuring a junction-to-solder point thermal resistance of typically 33 K/W, the SFH 4250-Z facilitates efficient heat transfer. This stability protects the chip during continuous operation, preserving the L70 lifespan required for municipal and commercial contracts.
- Industrial-Grade Robustness (Class 3B): Built with high-reliability silicone and a robust package architecture, this series resists sulfurization and moisture ingress, a mandatory requirement for fixtures operating in harsh industrial zones or outdoor infrastructure.
- Uniform 120° Beam Pattern: The Lambertian radiation pattern ensures even area illumination, reducing the number of LEDs required to flood a sensor's field of view in light curtain or proximity applications.
- Reliable SMT Production Yield: Optimized for automated pick-and-place lines, the component features consistent wetting properties during reflow, ensuring high yields for high-volume factories.
| Parameter | Performance Specification |
| Footprint Dimensions | 3.4 mm x 3.0 mm x 2.1 mm (PLCC-4) |
| Peak Wavelength | 850 nm |
| Centroid Wavelength | 845 nm |
| Typical Total Radiant Flux | 115 mW |
| Typical Forward Voltage | 1.5 V (Max 1.8 V) |
| Maximum Forward Current | 100 mA (Continuous) / 1000 mA (Pulse) |
| Thermal Resistance | ~33 K/W (Max 50 K/W) |
| Viewing Angle | 120° (Lambertian Emitter) |
| Operating Temperature | -40 °C to +110 °C |
The SFH 4250-Z Power TOPLED® series is a staple light source for performance-driven sensing markets:
- CCTV & IP Surveillance: Reliable 850nm sources for night vision in commercial and industrial security cameras.
- Industrial Proximity Sensors: Precise light engines for automated assembly lines, object counting, and position detection.
- Light Barriers & Curtains: Durable IR emitters for high-speed industrial safety systems and machinery limit switches.
- Specialty Automotive Interior: Reliable emitters for gesture recognition and cabin monitoring systems (DMS) requiring AEC-Q102 compatible variant platforms.
- Touchscreen & Display Backlighting: Uniform IR floodlighting for infrared touch frames and interactive kiosks.
Why Source through Gainer LED?
- In the specialized optoelectronic semiconductor distribution landscape, Gainer LED acts as a technical bridge between ams OSRAM's primary manufacturing and your localized assembly needs.
- Verified Original Stock: We guarantee 100% original stock in factory-sealed reels. Every shipment is traceable to its original production lot and binning group to ensure project uniformity.
- Wholesale Supply Chain Stability: We maintain strategic inventory levels of the Power TOPLED® series to protect our B2B partners from semiconductor market lead-time fluctuations.
- Technical Compliance: All components meet RoHS and REACH standards. We manage full batch traceability and documentation (CoC, Data Sheets) for international shipping.
- Expert Technical Consultation: Our team assists LED lamp manufacturers in selecting the correct radiant intensity bins to match specific photodiode or sensor sensitivities.
FAQ
Q: Is the SFH 4250-Z compatible with standard PLCC-2 footprints?
A: No. The SFH 4250-Z uses a PLCC-4 package. While the external dimensions (3.4x3.0mm) are similar, the 4-lead configuration provides a superior thermal path. You will require a PCB layout specifically designed for PLCC-4 pads.
Q: Can I drive the SFH 4250-Z higher than 100mA for pulse-mode sensing?
A: Yes. While its continuous current is rated at 100mA, it can handle short-duration pulses up to 1000mA (1.0A). This is a primary feature for ToF (Time-of-Flight) and rangefinding applications.
Q: Does Gainer LED provide bin-specific shipping for large orders?
A: Absolutely. We understand that for calibrated sensors, radiant power consistency is paramount. We coordinate wholesale shipments to provide consistent intensity bins across your entire order.
Q: Is the 850nm light visible to the human eye?
A: 850nm produces a faint red "glow" on the emitter surface. If your application requires total invisibility, we recommend the 940nm series, also available through Gainer LED.
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