PNDS / Marking codes / V1

Identify an unknown SMD part: marking code “V1”

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 16 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
1SV160	TOS	SC-59	Public marking directory
1SV310	TOS	SOD-123	Public marking directory
1SV311	TOS	SOD-323	Public marking directory
BD45312G	ROHM ^*	SSOP-5	Public marking directory
MC74VHC1G00DF	ON ^*	SOT-353	Public marking directory
MC74VHC1G00DT	ON ^*	SOT-23-5	Public marking directory
MMSZ6V2	ON	SOD-123	Public marking directory
MRF959	MOT	SC75	Public marking directory
NL17SZ16DF	ON ^*	SC-70-5	Public marking directory
NL17SZ17DF	ON ^*	SC-70-5	Public marking directory
NL17SZ374DF	ON ^*	SC-70-6	Public marking directory
R3111Q211C	RICOH ^*	SC-82AB	Public marking directory
R3116Q481C	RICOH ^*	SC-82AB	Public marking directory
TC74A1-3.3VCT	TOS ^*	SOT-23-5	Public marking directory
TC7SA00F	TOS	SOT-353	Public marking directory
TC7SA00FU	TOS	SOT-353	Public marking directory
2SD596-1	—	SOT-23	Public marking directory
2SD596A-1	—	SOT-23	Public marking directory
2SD780-1	—	SOT-23	Public marking directory
BFG25AW/X	—	SOT-343	Public marking directory
DZ23-C2V7	—	SOT-23	Public marking directory
ELM7621LBB	—	SOT-23 16vdc VD7 3d Elm	Public marking directory
FES2A	—	DO-214AA	Public marking directory
R1131D281D5	—	—	Public marking directory
R1163D181B5	—	—	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 “V”

V2 VS V3 V4 V5 VK VL VP VR VT

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.