One alternative part number will be part number BBNQ00160808601Y00
| Manufacturer Product Number | BBNQ00160808601Y00 |
| Digi-Key Part Number | 553-BBNQ00160808601Y00TR-ND - Tape & Reel (TR) |
| Manufacturer | Pulse Electronics Power |
| Description | FERRITE BEAD 600 OHM 0603 1LN |
One of the specifications that is different is the Current rating.
The FCM1608KF-601T03 is 350mA.
The BBNQ00160808601Y00 is 200mA.
It is similar in specifications. I would recommend verifying the specifications with the data sheet. See link below.
fcm1608kf-601t03