PNDS / Marking codes / ME

Identify an unknown SMD part: marking code “ME”

Packages rarely print the full part number. The marking below is shared by several part numbers — use the package, pin count and the manufacturer family together to narrow it down, then confirm against the datasheet.

25 candidates 20 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
1SMB26A	CSC CENTRAL SEMIC.CORP.	—	Public marking directory
2SA1235-E	TOS ^*	SC-59	Public marking directory
2SC3268	TOS	SOT-89	Public marking directory
2SC3429	TOS	SC-29	Public marking directory
2SC4393	TOS	SOT-323	Public marking directory
2SC5111-Y	TOS	SC-70	Public marking directory
2SC5111FT-Y	TOS ^*	—	Public marking directory
BD5224FVE	ROHM ^*	VSOF-5	Public marking directory
BD5224G	ROHM ^*	SSOP-5	Public marking directory
DDZ9708	DIODES	SOD-123	Public marking directory
DDZ9708S	DIODES	SOD-323	Public marking directory
DDZ9708S	DIODES	—	Public marking directory
DDZ9709	DIODES	—	Public marking directory
DDZX9708	DIODES ^*	SOT-23	Public marking directory
DDZX9708TS	DIODES	SOT-363	Public marking directory
DDZX9708W	DIODES ^*	SOT-323	Public marking directory
DZ23C43	DIODES	SOD-23 16dg - 3a Lge	Public marking directory
P6SMB47A	ON	DO-214AA	Public marking directory
P6SMBJ26A	PANJUIT	DO-214AA	Public marking directory
SM6T18CA	ST	DO-214AA	Public marking directory
2SA1602-E	—	SC-70	Public marking directory
BAS40WPT	—	SOT-323 16dc - 3a Chm	Public marking directory
CD214B-T26A	—	DO-214AA	Public marking directory
ELM7644HDB	—	SOT-23 16vdc VD7 3d Elm	Public marking directory
M5278L09M	—	SOT-89	Public marking directory

How we narrow this down

Package first — SOT-23 vs SOD-123 vs SC-59 eliminates most candidates immediately.
Pin count and body size — a 3-pin SOT-23 LDO cannot be a 6-pin dual transistor.
Marking style — laser-marked parts are usually newer production; ink marking often indicates older or second-source vendors.
Circuits around it — a part sitting on a rail with an inductor is a regulator, not a diode.
Datasheet check — every credible candidate lists its marking scheme in the “marking information” section.

FAQ

Same code, several parts — which one do I actually have? Compare package + pin count + surrounding circuit; if it still fits two parts, request a sample verification before production.
Can I substitute between the candidates? No — the same marking may sit on electrically different parts. Always match the electrical spec sheet, not just the marking.
Where do these mappings come from? Public SMD marking directories and historical stock tables; each row keeps its source so you can trace it.

Other codes starting with “M”

MEV MK7 M1 M2 M3 M4 M5 M6 M7 M8

Still not sure what the part is?

Send the code, package and a photo through the BOM hub — our engineers cross-check it against datasheets and sourcing records.

How these mappings are compiled: public SMD marking directories plus our own stock records. Each row keeps its original reference internally, so any mapping can be traced on request. ^* Manufacturer derived from the part-number family (some directory entries carry no manufacturer) — treat it as a lead, not a datasheet fact. Markings are indicative only — confirm with the physical batch marking and the original datasheet before ordering.