The size of SMD Laser Diode is only 3.4x3.3mm, which is lighter and shorter in product application. Surface-mounted element construction (SMD) welding method makes the product easy to cooperate with automatic production, saving production loss and man-hours.
At the same time built-in Zener diode, better anti-static ability, reliable operation and high efficiency. The various advantages of SMD packaged laser diodes are more in line with the mainstream direction of industry research and development.
ResearchGate article : Advanced LiFi technology: Laser light
https://www.researchgate.net/publication/339494713_Advanced_LiFi_technology_Laser_light