SFH 4140

OSRAM unveils the first flush-mountable infrared LED

Image of OSRAM Opto Semiconductors' SFH 4140

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 offers impressively-high radiant intensity and protrudes only fractions of millimeters from the board. An infrared transmitter can therefore now be integrated in extra-thin smartphones or tablet computers

The T-shaped transmitter takes up only 4.6 square millimeters (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 point in terms of space requirements. The SFH 4140 produces an impressive 50 milliwatts per steradiant (mW/sr) as its typical radiant intensity from 100 mA; therefore it achieves the ranges needed for remote control functions. The wavelength of 940 nanometers is also perfect for meeting the requirements of this application.

This component is OSRAM Opto Semiconductors' contribution to the trend of turning smartphones and tablet computers into universal remote controls, particularly for home entertainment electronics. If the device is equipped with the appropriate infrared transmitter diode then the diode can be controlled with a suitable app. Where classic remote controls traditionally use radial infrared LEDs, this option is not an attractive one for slim smartphones and tablets. These need a low-profile SMT solution which can nevertheless operate over the required distance. Up to now, manufacturers have been using transmitters such as 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 almost always be sufficient space.

Features and Benefits

  • 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 degrees
  • Wavelength: 940 nm
  • Radiant intensity: 50 mW/sr at 100 mA


  • Smart-phones
  • Tablets
  • Computers

SFH 4140

ImageManufacturer Part NumberDescriptionTypeCurrent - DC Forward (If) (Max)Radiant Intensity (Ie) Min @ IfAvailable Quantity
EMITTER IR 950NM 100MA SMDSFH 4140EMITTER IR 950NM 100MA SMDIR100mA25mW/sr @ 100mA0SFH 4140 product page link
Published: 2014-06-11