Infrared LED features flush-mountable design.April 17, 2014 -
Measuring 3.1 x 1.5 x 1.5 mm with only 0.6 mm extending above and below PC board, side-looking T-shaped Midled SFH 4140 can be integrated into extra-thin smartphones or tablet computers. Transmitter features wavelength of 940 nm and uses integrated reflector to create beam angle of ±25°. Producing 50 mW/sr of typical radiant intensity from 100 mA drive current, device achieves ranges needed for remote control functions.
Osram Unveils First Flush-mountable Infrared LED
OSRAM Opto Semiconductor
3870 North First Street
San Jose, CA, 95134
Press release date: April 8, 2014
As a remote control transmitter for tablet computers and smartphones, T-Midled is low-profile and high performance
Osram Opto Semiconductors now enables remote control functionality to be incorporated in a lower profile than ever before thanks to the first flush-mountable infrared LED. The compact side-looking T-shaped Midled SFH 4140 offers impressive high radiant intensity and protrudes only a fraction of a millimeter from the PC board. Now an infrared transmitter can be integrated into extra-thin smartphones or tablet computers.
For the first time, Osram Opto Semiconductors has succeeded in sinking a surface-mountable infrared LED in a PC board. "We want to enable our customers to install a powerful infrared transmitter even if there is very little height to work with," explained Sevugan Nagappan, product marketing manager for infrared at Osram Opto Semiconductors. "We have developed a transmitter that disappears almost entirely into the board, with only 0.6 mm extending above and below it. That saves plenty of space."
High output from an extremely small space
The T-shaped transmitter takes up only 4.6 mm2 of board space and emits a powerful focused beam to the side. The beam angle of +/-25 degrees is created by an integrated reflector – a real plus in terms of space requirements. The SFH 4140 produces an impressive 50 milliwatts per steradian (mW/sr) of typical radiant intensity from 100 mA drive current, so it achieves the ranges needed for remote control functions. Its wavelength of 940 nanometers is also perfect for meeting the requirements of this application.
Smartphones and tablet computers as remote controls
This component is Osram Opto Semiconductors' contribution to the trend of turning smartphones and tablet computers into universal remote controls, particularly for home entertainment devices. If the device is equipped with the appropriate infrared transmitter diode, then the diode can be controlled with a suitable app. Whereas classic remote controls traditionally use radial infrared LEDs, this option is viable for slim smartphones and tablets. These devices require a low-profile SMT solution that can also operate over the required distance. Up to now, manufacturers have been using transmitters such as Osram’s Midled, Mini Midled and Chipled. The powerful T-Midled SFH 4140 is Osram Opto Semiconductors' latest addition to its portfolio of remote control transmitters, a no-compromise, low-profile solution for which there will virtually always be sufficient space.
Technical data for T-Midled SFH 4140:
Component size 3.1 mm x 1.5 mm x 1.5 mm (height above and below a 0.3 mm thick board: 0.6 mm)
Beam angle +/- 25°
Wavelength 940 nm
Radiant intensity 50 mW/sr at 100 mA
ABOUT OSRAM OPTO SEMICONDUCTORS
OSRAM GmbH of Munich, Germany is one of the two leading light manufacturers in the world. Its subsidiary, OSRAM Opto Semiconductors GmbH in Regensburg (Germany), offers its customers solutions based on semiconductor technology for lighting, sensor and visualization applications. Osram Opto Semiconductors has production sites in Regensburg (Germany) and Penang (Malaysia). Its headquarters for North America is in Sunnyvale (USA), and for Asia in Hong Kong. Osram Opto Semiconductors also has sales offices throughout the world. For more information go to www.osram-os.com.
OSRAM Opto Semiconductors