PNDS / Marking codes / 6C

Identify an unknown SMD part: marking code “6C”

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 19 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
BC817-40	NXP	SOT-23	Public marking directory
BC817-40W	PHI	SOT-323 16ta - 3a PhH	Public marking directory
BC817-40W	DIODES	—	Public marking directory
BC846A	MCC	SOT-23	Public marking directory
DTA144EE	MCC	SC-75	Public marking directory
KIA7023AF	KEC ^*	SOT-89	Public marking directory
KIA7023AT	KEC ^*	—	Public marking directory
MMBFU310	MOT	SOT23	Public marking directory
MUN2113	MOT	SC-59	Public marking directory
MUN5113	MOT	SOT323	Public marking directory
MUN5113T1	ON	SOT-323	Public marking directory
R3111N261A	RICOH ^*	SOT-23-5	Public marking directory
RH5RL36AA	RICOH	SOT-89	Public marking directory
RN5RL36AA	RICOH ^*	SOT-23-5	Public marking directory
RQ5RW18AA	RICOH ^*	SOT-143R	Public marking directory
UNR2113	PANASONIC ^*	SC-59	Public marking directory
UNR3113	PANASONIC ^*	SSSMini3 18ta - 3a Pan	Public marking directory
UNR5113	PANASONIC ^*	SOT-523	Public marking directory
UNR9113J	PANASONIC ^*	SC-89	Public marking directory
EMZ6.8N	—	SOT-23	Public marking directory
FT531Ci	—	SOT-89	Public marking directory
GBLC15C	—	SOD-323	Public marking directory
MA333	—	SOD-123	Public marking directory
MM1Z51	—	SOD-123	Public marking directory
R1161D261A	—	—	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 “6”

6M 6A 6B 6D 6E 6F 6H 6K 6G 6L

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.