The SFH 4231 is a high power infrared emitter with features of point light source, high efficiency, small package, maximum DC current of 1A, low thermal resistance, and maximum spectral emission at 940nm. The product can be used for infrared illumination, surveillance systems, IR data transmission, driver assistance systems and machine security applications.
The SFH 4231 is a point‑source infrared LED designed for applications such as CMOS camera illumination, driver‑assist systems, and machine safety. It emits a narrow 940 nm wavelength with high efficiency and complies with RoHS and IEC safety standards.
Key electrical parameters include a maximum forward current of 1 A, a reverse voltage of 1 V, and a thermal resistance of 15 K/W. The component is supplied in a 1 × 1 mm chip package, with a typical total radiant flux of 500 mW and a half‑angle of 60°. Recommended lead‑free soldering profiles and pad designs are provided for reliable assembly. This manual is written in German.
| Peak emission wavelength | 940 nm |
|---|---|
| Maximum forward current | 1 A |
| Thermal resistance (junction‑to‑case) | 15 K/W |
| Reverse voltage | 1 V |
| Power consumption | 2.4 W |
| Maximum junction temperature | +125 °C |
| Half‑angle (radiation pattern) | 0‑60° |
| Typical total radiant flux | 500 mW |
The SFH 4231 emits at a peak wavelength of 940 nm.
The device can be driven with up to 1 A forward current.
It must be used according to IEC 60825‑1 and IEC 62471 safety guidelines.
A lead‑free reflow profile of 250‑255 °C peak, 5 s minimum, 30 s maximum, with ramp‑up 50 °C/s and ramp‑down 80 °C/s is recommended.