Abstract: A heterojunction bipolar transistor includes a base mesa, an emitter assembly formed over the base mesa, and a base contact. The emitter assembly includes multiple circular sectors. Each circular sector is spaced apart from one another such that a sector gap is formed between radial sides of adjacent circular sectors. The base contact, which is formed over the base mesa, has a central portion and multiple radial members. Each radial member extends outward from the central portion of the base contact along a corresponding sector gap. As such, each of the circular sectors of the emitter assembly is separated by a radial member of the base contact. The number of circular sectors may vary from one embodiment to another. For example, the emitter assembly may have three, four, six, or more circular sectors.

Abstract: A heterojunction bipolar transistor includes a base mesa, an emitter assembly formed over the base mesa, and a base contact. The emitter assembly includes multiple circular sectors. Each circular sector is spaced apart from one another such that a sector gap is formed between radial sides of adjacent circular sectors. The base contact, which is formed over the base mesa, has a central portion and multiple radial members. Each radial member extends outward from the central portion of the base contact along a corresponding sector gap. As such, each of the circular sectors of the emitter assembly is separated by a radial member of the base contact. The number of circular sectors may vary from one embodiment to another. For example, the emitter assembly may have three, four, six, or more circular sectors.

Abstract: An industrial truck for handling pallets. The truck includes a drive unit and a load unit. The load unit includes two load-receiving arms that receive the pallet and that are oriented in the direction of motion of the truck, i.e., in a longitudinal direction of the industrial truck. The load-receiving arms, when viewed from the direction of motion of the truck, are provided on different sides of the pallet to be picked up and include a plurality of pallet pick-ups that are spaced apart in the direction of motion of the truck and that are engaged or disengaged with the pallet by a transversal motion with respect to the direction of motion of the truck.