Diode Marking Code

Diode comes with many varieties. The following presents the marking code for common SMD component for 2 pins diode component.

Warning Note: Please ensure the context of the component used in the electronic design is correct. It is possible to misinterpret the part with same marking code. This marking code reference guide is meant for your convenient. Always check the datasheet to confirm if your marking code matches the part number.

Diode Marking Code (Commonly Used SMD Diode Component List)

Marking Code Package Part Number Alternative Part Number Description
M7 SMA-J 1N4007 UF1010 power diode, 1A 1000V
S3M SMC (DO-214AB) power diode, 3A 1000V
S3X SMC (DO-214AB) BY1800 power diode, 3A 1800V
S3Y SMC (DO-214AB) BY1800 power diode, 3A 2000V
SS14 SOD-123 1N5819 CMPSH1-4 schottky barrier diode, 1A
SS34 1N5822 CMSH3-40MA schottky barrier diode, 3A
A6 BAS316, BAS16
A7 SOT23-3 BAV99
A4 SOT23-3 BAV70 A4W (from China)
AC32 or (ES1D) ES1D
K1 MMSZ5251 zener diode 22V
V1J 10MQ100NPbF diode, Schottky Rectifier
514 S1G S1G (SMA, DO-214AC) surface mount glass passivated rectifier (Vishay General Semiconductor)
WJ C7 BZT52C15 (SOD123) 15V 5mA zener diode
A51 (Maybe) BZX84 ( Maybe) Voltage regulator diodes
V3J SMC, DO-214AB 30BQ100PbF Schottky Rectifier, 3A
F48 SS26  SS26 Schottky Barrier Rectifier
P451L  ??? ???
DO-35 1N5264B MMSZ5264B Zener diode
DO-204AL, DO-41 SB140 1N5819 Schottky Barrier Rectifier
GS1M SMA, DO-214AC Glass Passivated Rectifier
A20 SMB SMBYW02-200 High Efficiency Fast Recovery Rectifier Diodes
E1 SOD-523F 1N4148WT Small Signal, Fast Switch
E2 SOD-523F 1N4448WT Small Signal, Fast Switch
E3 SOD-523F 1N914BWT Small Signal, Fast Switch
E7 SOD323 RBS18V E7 bi-directional zener diodes
440A 5GGHC
SMC 1.5KE GJM 8A1K2 TVS Diode

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