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Technical content

14.11.2013 SMC780 1 of 2

Visible LED, SMD AlGaAs SMC780 is a AlGaAs LED mounted on a ceramic SMD package and sealed with silicone or epoxy resin for damp proof. On forward bias, it emits a radiation of typical 10 mW at a peak wavelength of 78 0 nm. Specifications (Unit: mm)

  • Structure: AlGaAs
  • Peak Wavelength: typ. 780 nm
  • Optical Output Power: typ. 10 mW
  • Package: Ceramic SMD, silicone / epoxy resin Absolute Maximum Ratings (Ta=25°C) Item Symbol Value Unit Power Dissipation PD 190 mW Forward Current IF 100 mA Pulse Forward Current** IFP 500 mA Reverse Voltage VR 5 V Operating Temperature Topr -30 … +80 °C Storage Temperature Tstg -40 … +80 °C Soldering Temperature * Tsol 240 °C * must be completed within 5 seconds ** max duty cycle 1%, max puls width 10µs Electro-Optical Characteristics Item Symbol Condition Min. Typ. Max. Unit Forward Voltage VF IF = 50 mA - 1.75 1.95 V Reverse Current IR VR = 5 V - - 10 µA Total Radiated Power* PO IF = 50 mA 5.0 10.0 - mW Radiation Intensity IE IF = 50 mA 2.0 5.0 - mW/sr Peak Wavelength λP IF = 50 mA 765 780 795 nm Half Width Δλ IF = 50 mA - 35 - nm Viewing Half Angle Θ1/2 IF = 50 mA - ±55 - deg. Rise Time tR IF = 50 mA 80 ns Fall Time tF IF = 50 mA 80 ns * Total Radiated Power is measured by Photodyne #500 Notes
  • Do not view directly into the emitting area of the LED during operation!
  • The above specifications are for reference purpose only and subjected to change without prior notice.

14.11.2013 SMC780 2 of 2

  • DO NOT apply any stress to the lead particularly when heat.
  • After soldering the LEDs should be protected from mechanical shock or vibration until the LEDs return to room temperature.
  • When it is necessary to clamp the LEDs to prevent soldering failure, it is important to minimize the mechanical stress on the LEDs. Temperature Profile PCB Footprint Layout (Unit: mm) Static Electricity
  • LEDs are very sensitive to Static Electricity and surge voltage. It is recommended to always wear a wrist band or an anti-electrostatic glove when handling the LEDs.
  • All devices, equipment and machinery must be grounded properly. It is recommended that precautions should be taken against surge voltage to the equipment that mounts the LEDs. Soldering Conditions