This part is a kind of semiconductor called AM20.

Function of this product has Axial Molded Inductors.

Manufacturers : Allied Components International

Image and pinout :

Some of the text within the PDF file :

RoHS Axial Molded Inductors AM20 Dimensions: Inches (mm) 0.095±0.01 (2.41±0.25) 24 AWG 1.15 (29) nominal 0.250±0.01 (6.35±0.25) 1.15 nominal (29) Allied Part Number Inductance Tolerance (µh) (%) Q Min. Test Freq. (MHz) SRF Min. (MHz) DCR Max. (Ω) Rated Current (mA) Electrical Inductance Range: .022µh to 1000µh. Tolerance: 10% over entire range. Tighter tolerances available. Rated Current: Based on Inductance Drop <10ºC at rated current. Test Procedures: L and Q measured with HP4342A Q-Meter at specified Frequency. DCR measured on CH-301. SRF measured on HP-4191A, HP4291B. Dielectric Strength: 1000 Volts R.M.S. at sea level. Operating Temp.: -55°C to +125°C. Physical Marking (on part): 5 Band Color Code per MIL-C-15305. Marking (on reel): Manufacturers Name, Par [ ... ]

AM20 PDF Datasheet Download