This part is a kind of semiconductor called AGQ210A.

Function of this product has Ultra-small Package Flat Polarized Relay.

Manufacturers : NAiS Automation

Image and pinout :

Some of the text within the PDF file :

GQ TESTING ULTRA-SMALL PACKAGE FLAT POLARIZED RELAY GQ-RELAYS Due to highly efficient magnetic circuit design, leakage flux is reduced and changes in electrical characteristics from components being mounted close-together are minimized. This all means a packaging density higher than ever before. • Nominal operating power: 140 mW • Outstanding vibration and shock resistance. Functional shock resistance: 750 m/s2 {75G} Destructive shock resistance: 1,000 m/s2 {100G} Functional vibration resistance: 10 to 55 Hz (at double amplitude of 3.3 mm .130 inch) Destructive vibration resistance: 10 to 55 Hz (at double amplitude of 5 mm .197 inch) FEATURES 10.60±0.3 .417±.012 7.20±0.3 .283±.012 5.20±0.2 .205±.008 10.60±0.3 .417±.012 7.20±0.3 .283±.012 Max.5.40 . [ ... ]

AGQ210A PDF Datasheet Download