This document describes the SFH 4203 high power infrared emitter, which has a power of 35 mW and high efficiency. The product is suitable for industrial electronics, automotive technology, sensor technology, and more.
The SFH 4203 is a high‑power GaAs infrared LED (35 mW) designed for lead‑free, RoHS‑compliant applications. It delivers homogeneous radiation with a typical peak wavelength of 950 nm and a half‑angle of 65°, making it suitable for industrial electronics, automotive technology, sensor systems and IR free‑air transmission.
The component is specified for a forward current of 100 mA, reverse voltage of 3 V, and a power dissipation of 180 mW. Thermal management is addressed with a junction‑to‑ambient resistance of 450 K/W (FR4) or 200 K/W (metal block). Recommended soldering follows a lead‑free IR‑reflow profile per JEDEC Level 2, with peak temperatures between 250 °C and 285 °C. This manual is written in German.
| Radiant power | 35 mW |
|---|---|
| Peak wavelength | 950 nm |
| Forward current (continuous) | 100 mA |
| Reverse voltage | 3 V |
| Power dissipation | 180 mW |
| Radiant intensity (typical) | 8 mW/sr |
| Half angle | 65° |
| Active chip area | 0.09 mm² |
| Chip dimensions | 0.3 x 0.3 mm |
The SFH 4203 emits at a typical peak wavelength of 950 nm.
The device is rated for a continuous forward current of 100 mA.
Yes, the component is lead‑free and complies with RoHS requirements.