Name of the part
RV3028
Previous work, similar parts
I could not find any equivalent via Google or forum
Top view
This picture shows the part from above, so that is easy to see were connectors should go, and which diameter they have.
Datasheet
The official documentation of the part manufacture is linked here:
Type
I did not read this
Breakout board, sub assembly, plug in module (A)
Antenna (AE)
Battery (BT)
Capacitor (C)
Diode (D)
Display (DS)
Fuse (F)
Hardware , mounting screws, etc. (H)
Jack, fixed part of a connector pair, header (J)
Relay (K)
Inductor, Coil, Ferrite bead (L)
Loudspeaker, Buzzer (LS)
Motor (M)
Microphone (MK)
Plug, moveable part of a connector pair (P)
Transistor (Q)
Resistor (R)
Thermistor (RT)
Varistor (RV)
Switch (S)
Transformer (T)
Integrated Circuit (IC)
Crystal, Oscillator (Y)
Zender diode (Z)
Other (please specifiy)
Footprint
3.2mm ceramic casing