PNDS / Marking codes / DS

Identify an unknown SMD part: marking code “DS”

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
2P710AS	PHI	SOT346	Public marking directory
2PB1219AS	PHI	SOT-323 16ta - 3a PhH	Public marking directory
2PB710AS	PHI	SC-59	Public marking directory
2PB710AS	PHI	SC-59/SOT346	Public marking directory
2SB1219A-S	PANASONIC ^*	SC-70	Public marking directory
BD4836FVE	ROHM ^*	VSOF-5	Public marking directory
BD4836G	ROHM ^*	SSOP-5	Public marking directory
BZX384-C47	PHI	SOD-323	Public marking directory
MAX6314US50D3-T	MAX ^*	SOT-143	Public marking directory
P6SMBJ78C	LITTLE ^*	DO-214AA	Public marking directory
R3112Q361C	RICOH ^*	SC-82AB	Public marking directory
XC61119C33ANR-G	TOREX ^*	SSOT-24 26gh VD3 5c Tor	Public marking directory
XC6119C33ANR	TOREX ^*	SSOT-24	Public marking directory
2SA1037AK-LNS	—	SOT-346	Public marking directory
2SB710A-S	—	SC-59	Public marking directory
2SB789-S	—	SOT-89	Public marking directory
2SD1946	—	SOT-89	Public marking directory
AP131-33TW	—	—	Public marking directory
AP131-33W	—	SOT-23-5L	Public marking directory
AP131-33Y	—	SOT-89-5L	Public marking directory
Anode1	—	—	Public marking directory
HQ1F3P	—	SOT-89	Public marking directory
MW6	—	—	Public marking directory
P4SMA180A	—	DO-214AC	Public marking directory
R5220D261B	—	—	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 “D”

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9

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.