SFH 4730 and SFH 4740 are lead-free products and are RoHS compliant. SFH 4730 and SFH 4740 are both 850nm infrared LEDs with 3.6W and 3W optical output power respectively. SFH 4730 has a black frame to minimize scattered light while SFH 4740 has a white frame to achieve higher light output power. Both products have a 2.1 x 5.4 mm2 active chip area, a maximum current of 1A, a low thermal resistance of 2.8 K/W and a spectral emission at 850nm. SFH 4730 and SFH 4740 are suitable for a variety of applications including infrared illumination, surveillance systems, IR data transmission and driver assistance systems.
The SFH 4730 and SFH 4740 are infrared LEDs designed for CMOS camera illumination, driver‑assist systems and surveillance. The SFH 4730 features a black frame and 3 W optical power, while the SFH 4740 uses a white frame and delivers 3.6 W optical power. Both devices have an active chip area of 2.1 × 5.4 mm and emit at a peak wavelength of 850 nm.
Maximum ratings include a forward current of 1 A, low thermal resistance of 2.8 K/W, and a forward voltage of about 0.18 V. The datasheet also lists dimensional data, radiant intensity, packaging outlines, and recommended ERNI 4‑pin connectors for board integration. Compliance with RoHS and IEC eye‑safety standards is noted.
| Optical power (SFH 4730) | 3 W |
|---|---|
| Optical power (SFH 4740) | 3.6 W |
| Active chip area | 2.1 × 5.4 mm |
| Maximum forward current | 1 A |
| Thermal resistance | 2.8 K/W |
| Peak emission wavelength | 850 nm |
The SFH 4730 provides 3 W of optical power.
Both the SFH 4730 and SFH 4740 emit at a peak wavelength of 850 nm.
The maximum forward current is 1 A.
The thermal resistance is 2.8 K/W.