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Technical content

14.11.2013 SMC970 1 of 2

Violet LED, SMD GaAs SMC970 are GaAs LEDs mounted on a ceramic SMD package and sealed with silicone or epoxy resin for damp proof. On forward bias, i t emits a radiation of typical 4 mW at a peak wavelength of 970 nm. Specifications (Unit: mm)

  • Structure: GaAs
  • Peak Wavelength: typ. 970 nm
  • Optical Output Power: typ. 4 mW
  • Package: Ceramic SMD, silicone / epoxy resin Absolute Maximum Ratings (Ta=25°C) Item Symbol Value Unit Power Dissipation PD 140 mW Forward Current IF 100 mA Pulse Forward Current *1 IFP 500 mA Reverse Voltage VR 5 V Operating Temperature Topr -20 … +80 °C Storage Temperature Tstg -30 … +80 °C Soldering Temperature * Tsol 240 °C *1 duty = 1%, pulse width = 10 µs *2 must be completed within 5 seconds Electro-Optical Characteristics Item Symbol Condition Min. Typ. Max. Unit Forward Voltage VF IF = 50 mA - 1.30 1.45 V Reverse Current IR VR = 5 V - - 10 µA Total Radiated Power PO IF = 50 mA 2.0 4.0 - mW Radiation Intensity IE IF = 50 mA - 1.5 - mW/sr Peak Wavelength λP IF = 50 mA 960 970 980 nm Half Width Δλ IF = 50 mA - 50 - nm Viewing Half Angle Θ1/2 IF = 50 mA - ±55 - deg. Rise Time tr IF = 50 mA - 1000 - ns Fall Time tf IF = 50 mA - 500 - ns Radiation Intensity is measured by Tektronix J-6512 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 not ice.

14.11.2013 SMC970 2 of 2

Recommended Land Layout (Unit: mm) 1. Soldering Conditions

  • 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. Soldering Conditions 2. Static Electricity
  • The LEDs are very sensitive to Static Electricity and surge voltage. So it is recommended that a wrist band or an anti-electrostatic glove be used 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.