LED Chip Cranks Up Optical Output Power

Nov. 9, 2011
The IR Power Topled with lens (SFH 4258S/4259S) delivers an 80% higher optical output than the standard version of the infrared LED while retaining the same surface area and drive current.

The IR Power Topled with lens (SFH 4258S/4259S) delivers an 80% higher optical output than the standard version of the infrared LED while retaining the same surface area and drive current. This increase in performance comes from a special thin-film chip which, thanks to Nanostack technology, has not just one but two p-n junctions that are grown one on top of the other. This latest IR Power Topled has the same package dimensions as the standard version and can be used as a drop-in replacement. Because of the series circuit, the voltage is higher by approximately a factor of two. The IR Power Topled produces an optical output power of 80 mW from an operating current of 70 mA and emits at a wavelength of 850 nm. It is available with beam angles of ±15° (SFH 4258S) and ±25° (SFH 4259S) from two different lens types. OSRAM OPTO SEMICONDUCTORS, San Jose, CA. (888) 446-7726.

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