PNDS / Marking codes / MA

Identify an unknown SMD part: marking code “MA”

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 14 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
2SC3011	TOS	SC-59	Public marking directory
2SC3301	TOS	SOT-89	Public marking directory
2SC4392	TOS	SOT-323	Public marking directory
2SC5096-O	TOS	SC-70	Public marking directory
2SC5096F-O	TOS ^*	TESM 18ta - 3a Tos	Public marking directory
BFS17	PHI	SOT23	Public marking directory
DZ23C30	DIODES	SOD-23 16dg - 3a Lge	Public marking directory
FMMTA06R	ZETEX	SOT-23	Public marking directory
M1MA151A	MOT	SC-59	Public marking directory
M1MA151AT	MOT	SOT346	Public marking directory
M1MA152AT	MOT	SOT346	Public marking directory
M5278L05M	TENESAS	SOT-89	Public marking directory
MBT3904DW1	MOT	SOT363	Public marking directory
R1114Q401A	RICOH ^*	SOT-143R	Public marking directory
2SC5536	—	—	Public marking directory
BAS70WPT	—	SOT-323 16dc - 3a Chm	Public marking directory
ELM7640HDB	—	SOT-23 16vdc VD7 3d Elm	Public marking directory
MBT3904DW	—	SOT-363	Public marking directory
PT7M6238CLC4	—	SC-70-4	Public marking directory
PT7M6238CLC4E	—	SC-70-4	Public marking directory
R1151N001B	—	SOT-23-6	Public marking directory
RP130Q211D	—	SC-82AB	Public marking directory
RT9168A-25CBR	—	SOT-23-5	Public marking directory
XC6120N10N	—	SSOT-24	Public marking directory
XC6127N16KNR	—	SSOT-24	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.