PNDS / Marking codes / J6

Identify an unknown SMD part: marking code “J6”

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.

19 candidates 11 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
CMOZ27V	CSC CENTRAL SEMIC.CORP. ^*	SOD-523	Public marking directory
M1MA174	MOT	SOT-323	Public marking directory
MAX809JTR	ON	SOT-23	Public marking directory
MMS9015	MCC	SOT-23	Public marking directory
R3111N162C	RICOH ^*	SOT-23	Public marking directory
R3114Q431C	RICOH ^*	SC-82AB	Public marking directory
RN1967FS	TOS	—	Public marking directory
RN5RG26AA	RICOH ^*	SOT-23-5	Public marking directory
TC7SZU04F	TOS	SOT-353	Public marking directory
TC7SZU04FU	TOS	SOT-353	Public marking directory
ZC835	FERRANTI	SOT-23	Public marking directory
2SK67-6	—	SOT-23 16fh - 3a Nec	Public marking directory
CHT807PT-S	—	SOT-23 16ta - 3a Chm	Public marking directory
ELM7636HAB	—	SOT-23 16vdc VD7 3d Elm	Public marking directory
FRS3K	—	DO-214AB	Public marking directory
R3130N46EA	—	SOT-23	Public marking directory
RP103Q201D	—	SC-82AB	Public marking directory
RT9166A-18CX	—	SOT-89	Public marking directory
RT9167A-21CB	—	SOT-23-5	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 “J”

J1 J2 J3 J5 JS JC JJ J4 JE J8

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.