Product Overview
High-Power 950 nm GaAs Through-Hole Light Source with ±4° Beam
Condition
Unused new old stock (NOS) surplus. Radial wire leads are straight and clean. Dark epoxy resin bodies are intact with no chipping or discoloration.
Same or next business day shipping from our Idaho warehouse. Reliable parts since 1999. Honest pricing, no nonsense.
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Product Overview
The ams OSRAM SFH4503 is a high-power infrared emitting diode fabricated with gallium arsenide (GaAs) technology. Designed for directional optical communication and sensing, this component radiates at a peak wavelength of 950 nm through a molded 5 mm (T-1 3/4) black-tinted epoxy package. Its narrow beam pattern concentrates radiant intensity along the optical axis, making it effective for line-of-sight transmission and tight optical interrupter setups.
Key Features
- Peak emission wavelength: 950 nm
- Narrow ±4° half-angle for concentrated directional output
- Typical radiant intensity of 250 mW/sr at 100 mA forward current
- Standard 5 mm (T-1 3/4) black-tinted resin epoxy package
- Continuous forward current rating of 100 mA with 2.2 A surge tolerance
- 2.54 mm (0.10 in) lead spacing for standard through-hole PCB placement
- Forward voltage rated at 1.5 V at 100 mA
Applications
- Aligning line-of-sight infrared remote controls and data link transmitters.
- Replacing worn emitters in industrial photo-interrupters, edge detectors, and light barriers.
- Benchtop prototyping of optical tachometers and presence-sensing interrupt circuits.
- Building custom infrared illuminator arrays and sensor beams for robotics projects.
Frequently Asked Questions
Which lead denotes the anode on the SFH4503?
In the OSRAM SFH emitter series, the shorter lead designates the anode, while the longer lead is the cathode. Confirm circuit polarity before soldering.
What is the beam spread of this emitter?
The package provides a narrow ±4° half-angle, concentrating optical power along the central axis for focused transmission.
Why buy individual pieces instead of a bulk surplus lot?
Ordering individual components lets you purchase the exact count needed for repairs or prototypes without storing excess inventory. More pieces cost less each, and the price-break table on this page shows what each quantity costs. Shipping is an $8 flat rate, free once the order passes $28, and orders leave our Idaho warehouse the same or next business day.
Infrared light does its best work completely out of sight. Solder this narrow-beam emitter into your board, power it up, and let the invisible link take care of the rest.
