PNDS / Marking codes / HS

Identify an unknown SMD part: marking code “HS”

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
2SB956-S	TOS ^*	SOT-89	Public marking directory
2SC3928-S	PANASONIC ^*	SC-59	Public marking directory
2SD2540	PANASONIC ^*	SOT-89	Public marking directory
BU4825F	ROHM ^*	SOP-4	Public marking directory
BU4825FWE	ROHM ^*	VSOF-5	Public marking directory
BU4825G	ROHM ^*	SSOP-5	Public marking directory
DDZ9699	DIODES	SOD-123	Public marking directory
DDZ9699S	DIODES	SOD-323	Public marking directory
DDZ9699S	DIODES	—	Public marking directory
DDZ9700	DIODES	—	Public marking directory
DDZX9699	DIODES ^*	SOT-23	Public marking directory
DDZX9699TS	DIODES	SOT-363	Public marking directory
DDZX9699W	DIODES ^*	SOT-323	Public marking directory
MAX6315US29D2-T	MAX	SOT-143	Public marking directory
R1112N461B	RICOH ^*	SOT-23-5	Public marking directory
2SA1035-S	—	SOT-23	Public marking directory
2SA1531A-S	—	SOT-323	Public marking directory
2SC4155-S	—	SC-70	Public marking directory
2SC4155A-S	—	SC-70	Public marking directory
2SK2751	—	SC-59	Public marking directory
2SK2988	—	SOT-23	Public marking directory
3T400C	—	DO-214AA	Public marking directory
P4SMAJ8.5	—	DO-214AC	Public marking directory
XC6127C42BNR	—	SSOT-24	Public marking directory
XC6127N42GNR	—	SSOT-24	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 “H”

H0 H1 H2 H3 H4 H5 HA HC HD HE

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.