The 1503 03 from Lumberg is a 3.5mm, 3pole stereo jack socket connector. The angular version jack chassis socket are according to JIS C 6560 JC35J3A standard for printed circuit boards and surface mounting technology (SMT).
Rated current of 1A
Rated voltage of 34VAC/VDC
Insulating body material is polyamide, UL94-HB rated