PNDS / Marking codes / PA

Identify an unknown SMD part: marking code “PA”

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 13 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
2SC3295-A	TOS	SC-59	Public marking directory
2SC4666A	TOS	SOT-323	Public marking directory
BA885	INFINEON	SOT-23	Public marking directory
BD5240FVE	ROHM ^*	VSOF-5	Public marking directory
BD5240G	ROHM ^*	SSOP-5	Public marking directory
BH15PB1WHFV	ROHM ^*	—	Public marking directory
BZX84C27TS	DIODES	—	Public marking directory
CHTA92LPT	CRY ^*	SOT-23 16ta - 3a Chm	Public marking directory
DMP2104V	DIODES	—	Public marking directory
MA2Q735	PANASONIC ^*	DO-214	Public marking directory
R1114Q201B	RICOH ^*	SOT-143R	Public marking directory
Si1902DL	VISHAY ^*	SOT-363	Public marking directory
TC1278-5ENB	MIC ^*	SOT-23	Public marking directory
2PA1774RM	—	SOT-883 22ta - 2a Phi	Public marking directory
2SJ179	—	SOT-89	Public marking directory
BB151	—	SOD-323	Public marking directory
BZX84-C27T	—	SOT-523	Public marking directory
BZX84-C27TS	—	SOT-363	Public marking directory
CHT92T1PT	—	FBPT-523 17ta - 9a Chm	Public marking directory
KRA101S	—	SOT-23	Public marking directory
KRA301	—	SOT-323	Public marking directory
KRA301E	—	SOT-490	Public marking directory
KRA301V	—	—	Public marking directory
R1225N182B	—	SOT-23-6W 33so	Public marking directory
RP130Q401D	—	SC-82AB	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 “P”

PK7 PR7 P0 P1 P2 P3 P4 P5 P6 P7

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.