UL94V-0. Miniature SMT Pin Headers. These Hirose miniature SMT PCB headers are light weight, high density connector headers in PPS material, with pin contacts only. Ideal for wire to board connections in a broad range of connector applications. Part numbers - A3A-xxPS-2SV(71) have a positioning boss. Features and Benefits. Operating temperature range -55 to +85°C. Applications:. VTR Vehicle telephones Electronic equipment Test rigs