PNDS / Marking codes / KN

Identify an unknown SMD part: marking code “KN”

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
2SJ305	TOS	SOT-23	Public marking directory
2SK3018	ROHM	—	Public marking directory
2SK3019	ROHM	SOT-416	Public marking directory
BST84	PHI	SOT-89	Public marking directory
BU4929F	ROHM ^*	SOP-4	Public marking directory
BU4929FWE	ROHM ^*	VSOF-5	Public marking directory
BU4929G	ROHM ^*	SSOP-5	Public marking directory
DDZ5V6B	DIODES	SOD-123	Public marking directory
DDZ5V6BS	DIODES	SOD-323	Public marking directory
DDZ5V6BS	DIODES	—	Public marking directory
DDZ6V2B	DIODES	—	Public marking directory
DDZX5V6B	DIODES	SOT-23	Public marking directory
DDZX5V6BTS	DIODES	SOT-363	Public marking directory
DDZX5V6BW	DIODES ^*	SOT-323	Public marking directory
DZ23C16	DIODES	SOD-23 16dg - 3a Lge	Public marking directory
P6SMBJ7.5	LITTLE ^*	DO-214AA	Public marking directory
R5426D119FA	RICOH ^*	—	Public marking directory
R5426N119FA	RICOH ^*	SOT-23-6	Public marking directory
XC61119N10ANR-G	TOREX ^*	SSOT-24 26gh VD1 5c Tor	Public marking directory
XC6119N10ANR	TOREX ^*	SSOT-24	Public marking directory
2SC4983	—	SOT-23	Public marking directory
2SK2218	—	SOT-89	Public marking directory
2SK3541	—	—	Public marking directory
FP6811-26CC4P	—	SC-70-4	Public marking directory
P6SMB10	—	DO-214AA	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 “K”

K1 K2 K4 K5 KB KC KD KE KEC KM

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.