Package structure of the Osram PLPT9 450LB_E

The PLPT9 450LB_E utilizes a TO90 hermetic "Metal Can®" package—a signature packaging format for Osram’s high-power laser diodes. The assembly consists of three main components:

Metal Can: A cylindrical metal housing featuring a glass window at the top, through which the laser beam is emitted. The can is hermetically sealed to the header via seam welding and filled with an inert gas, which excludes moisture and oxygen to protect the chip from oxidation.

Header: The base component, which incorporates an internal heat sink upon which the laser chip is mounted. The flat underside of the header serves as the primary thermal dissipation path; the datasheet explicitly states that "heat is dissipated only through the base of the diode package."

Pins:Two electrodes, each with a diameter of 0.6 mm, extend from the header to facilitate soldering onto a PCB or drive circuitry. This hermetic packaging offers several advantages: excellent thermal dissipation (due to the thermally conductive metal housing), high reliability (by isolating the chip from harsh environments), and robust mechanical strength (providing resistance to vibration and shock), making it well-suited for industrial and automotive-grade applications. The device has an approximate weight of 1180 mg.