PNDS / Marking codes / 47

Identify an unknown SMD part: marking code “47”

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.

23 candidates 7 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
BAS40-07	INFINEON	SOT143	Public marking directory
BAS40-07W	INFINEON	SOT-343	Public marking directory
CMZ47	TOS	—	Public marking directory
P6SMBJ47	LITTLE ^*	DO-214AA	Public marking directory
R3111Q471B	RICOH ^*	SC-82AB	Public marking directory
RN5RF47AA	RICOH ^*	SOT-23-5	Public marking directory
RN5RZ47AA	RICOH ^*	SOT-23-5	Public marking directory
CHDTC114GMPT	—	SOT-723 18ta - 3a Chm	Public marking directory
ELM9847BB	—	SOT-23 16cg VR1 3d Elm	Public marking directory
GLZ47	—	SOD-80	Public marking directory
HMSZ5247B	—	SOD-323	Public marking directory
HZC4.7	—	SOD-523	Public marking directory
KDZ4.7EV	—	SOD-523	Public marking directory
KDZ4.7V	—	SOD-323	Public marking directory
MAZY470	—	NMiniP2	Public marking directory
R1223N502H	—	SOT-23-5	Public marking directory
SML4756	—	DO-214	Public marking directory
U1Z47	—	SOD-6	Public marking directory
U1ZB47	—	I-FLAT	Public marking directory
XC6213B472NR	—	SSOT-24	Public marking directory
XC6217D382NR	—	SSOT-24	Public marking directory
XC6221D151NR	—	SSOT-24	Public marking directory
ZD5247BS2	—	SOD-323	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 “4”

482I 43 44 45 4C 4B 4D 46 4E 40

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.