SMD marking code “31” — candidate parts

22 candidates7 with manufacturer

Small packages rarely print the full part number. The marking below maps to these part numbers — verify against the package, pin count and the manufacturer's datasheet before ordering.

Candidate part numbers

Part numberManufacturerPackageMapping source
MMBD1402NSCSOT23PDF · SMD_Catalog222.pdf p.15
MUN5331DW1MOTSOT363PDF · SMD_Catalog222.pdf p.15
PD3S140DIODES—PDF · DIODES marking_code_xref.pdf p.36
PDTA124XEPHISOT-416PDF · smd-codes.pdf p.200
PDTA124XEPHISC-75/SOT416PDF · 飞利浦SMD-PHILIPS.pdf p.34
PDTA124XEFPHISOT-490PDF · smd-codes.pdf p.200
PDTA124XEFPHISC-89/SOT490PDF · 飞利浦SMD-PHILIPS.pdf p.34
2SC5663PT—SOT-723 18ta - 3a ChmPDF · 老外牛B SMD-2010.pdf p.294
2SC5663TPT—SOT-416 16ta - 3a ChmPDF · 老外牛B SMD-2010.pdf p.294
CHT5663M1PT—FBPT-723 17ta - 9a ChmPDF · 老外牛B SMD-2010.pdf p.294
ELM9831BB—SOT-23 16cg VR1 3d ElmPDF · 老外牛B SMD-2010.pdf p.294
HMSZ5231B—SOD-323PDF · smd-codes.pdf p.25
MUN5331DW—SOT-363PDF · smd-codes.pdf p.973
R1163D181E5——PDF · smd-codes.pdf p.973
R1223N182F—SOT-23-5PDF · smd-codes.pdf p.677
R3111Q311B—SC-82ABPDF · 2011SMD-codes.pdf p.816
RN5RF31AA—SOT-23-5PDF · smd-codes.pdf p.677
RN5RZ31AA—SOT-23-5PDF · smd-codes.pdf p.677
UTC8131—SOT-89PDF · 2011SMD-codes.pdf p.718
XC6213B312NR—SSOT-24PDF · 2011SMD-codes.pdf p.816
XC6221C39BNR—SSOT-24PDF · 2011SMD-codes.pdf p.816
ZD5231BS2—SOD-323PDF · smd-codes.pdf p.25
Markings are indicative only: the same code can denote different parts across manufacturers and packages. Always confirm with the physical batch marking and the original datasheet.

Other marking codes starting with “3”

3947 parts3337 parts3B34 parts3730 parts3A30 parts3E29 parts3028 parts3626 parts3D24 parts3223 parts3523 parts3823 parts

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