When looking at Vishay small signal Schottky diodes from MCL101A, MCL101B, MCL101C, MCL103A, MCL103B and MCL103C series, there is a last suffix “-TR3” or “-TR” in part numbering.
“-TR3” and “- TR” are the packaging codes:
-TR3: 10K per 13" reel (8mm tape), 10K/ box
-TR: 2.5K per 7"reel (8mm tape), 12.5K/box
Applicable Part Numbers
MCL101A-TR MCL101A-TR3 MCL101B-TR MCL101B-TR3 MCL101C-TR
MCL101C-TR3 MCL103A-TR MCL103A-TR3 MCL103B-TR MCL103B-TR3
MCL103C-TR MCL103C-TR3 MCL4148-TR MCL4148-TR3 MCL4151-TR
MCL4151-TR3 MCL4154-TR MCL4154-TR3 MCL4448-TR MCL4448-TR3
MCL101A-TR3-ND MCL101A-TR-ND MCL101B-TR3-ND MCL101B-TR-ND
MCL101CGICT-ND MCL101CGIDKR-ND MCL101CGITR-ND MCL101C-TR3-ND
MCL103AGICT-ND MCL103AGIDKR-ND MCL103AGITR-ND MCL103A-TR3-ND
MCL103B-TR3-ND MCL103B-TR-ND MCL103C-TR3-ND MCL103C-TR-ND
MCL4148CT-ND MCL4148DKR-ND MCL4148GICT-ND MCL4148GIDKR-ND
MCL4148GITR-ND MCL4148TR-ND MCL4151-TR3-ND MCL4151-TR-ND
MCL4154-TR3-ND MCL4154-TR-ND MCL4448GICT-ND MCL4448GIDKR-ND
MCL4448GITR-ND MCL4448-TR3GICT-ND MCL4448-TR3GIDKR-ND MCL4448-TR3GITR-ND