Chip Identification - TVS diodes

Question

Can someone please confirm that these are bidirectional TVS diodes, I cannot find the datasheets for these anywhere, but they look to be them.

Answer 1

The first and the third diodes are Littelfuse parts, as can be seen by the spooning L and F-logo. _{(source: https://m.littelfuse.com/~/media/electronics/datasheets/tvs_diodes/littelfuse_tvs_diode_smbj_datasheet.pdf.pdf)}

For the first one, WE means bidirectional 5V SMA size. Part number SMAJ5.0CA

_{(source: https://m.littelfuse.com/~/media/electronics/datasheets/tvs_diodes/littelfuse_tvs_diode_smaj_datasheet.pdf.pdf)}


For the third one, CZ means bidirectional 51V in SMB size. Part number SMBJ51CA

EDIT: As noted by @Tim Willams, it has a cathode band, so it's not bidirectional, it's unidirectional and that would be SMAJ51A - 51V unidirectional SMA.

_{(source SMB: https://m.littelfuse.com/~/media/electronics/datasheets/tvs_diodes/littelfuse_tvs_diode_smbj_datasheet.pdf.pdf)}

_{(source SMA: https://m.littelfuse.com/~/media/electronics/datasheets/tvs_diodes/littelfuse_tvs_diode_smaj_datasheet.pdf.pdf)}

The second one is a Diodes Inc part _{(source: https://www.diodes.com/assets/Datasheets/SMAJ5.0CA-SMAJ200CA.pdf)}

VK means Bidirectional 30V in SMA size. Part number SMAJ30CA _{(Source: https://www.diodes.com/assets/Datasheets/SMAJ5.0CA-SMAJ200CA.pdf)}