ACS712
Allegro MicroSystems
Sensors & Modules SOIC 8 Pin Type
Allegro MicroSystems is a US company based in Manchester, New Hampshire, specialising in magnetic sensors and power ICs. Its ACS712 Hall-effect current sensors, Hall switches and A4988 stepper motor drivers are common in maker and industrial designs.

STR-A6252 Universal-Input/15 W 50 kHz Flyback Switching Regulators by Allegro MicroSystems (DIP 8 type): datasheet PDF, pinout and specifications.
HW-525 ACS758 50A Range Hall Effect Linear Current Sensor Module by Allegro MicroSystems: datasheet PDF, pinout and specifications.