PNDS / Marking codes / AR

Identify an unknown SMD part: marking code “AR”

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 15 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
2PD1820AR	PHI	SOT-323 16ta - 3a PhH	Public marking directory
2SB1218-R	PANASONIC ^*	SOT-323	Public marking directory
2SC3338	TOS ^*	SOT-89	Public marking directory
74AHC1G06GW	NXP	SOT-353	Public marking directory
BCW60CR	ITT	SOT-23	Public marking directory
CMDZ43L	CSC CENTRAL SEMIC.CORP. ^*	SOD-323	Public marking directory
CPH3116	SANYO ^*	—	Public marking directory
IMP811REUS-T	IMP	SOT-143	Public marking directory
MAX811R	MAX ^*	SOT-143	Public marking directory
MAX811RUS	MAX ^*	SOT-143	Public marking directory
MAX824REUK	MAX ^*	SOT-23-5	Public marking directory
MMBZ5237B	FSC	SOT-23 16dc - 3a Lge	Public marking directory
MSD709R	MOT	—	Public marking directory
P6SMBJ8.0AC	LITTLE ^*	DO-214AA	Public marking directory
R1112N251A	RICOH	SOT-23-5	Public marking directory
2SA2011	—	SOT-89	Public marking directory
2SB1462-R	—	SOT-23	Public marking directory
2SB709-R	—	SC-59	Public marking directory
2SB766-R	—	SOT-89	Public marking directory
AT1201-50XR	—	SOT-23-5	Public marking directory
CD214B-T8.0CA	—	DO-214AA	Public marking directory
GS6333UR19D3	—	SOT-23	Public marking directory
MAZU330-M	—	SOT-346	Public marking directory
MSB709	—	SOT-23	Public marking directory
MSB709-R	—	SOT-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 “A”

AL AH-16 A1 A2 A3 A4 A5 A6 A7 A8

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.