PNDS / Marking codes / ZS

Identify an unknown SMD part: marking code “ZS”

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 23 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
2PC4081S	PHI	SOT-323 16ta - 3a PhH	Public marking directory
2PC4617JS	PHI	SOT-490	Public marking directory
2PC4617JS	PHI	SC-89/SOT490	Public marking directory
2PC4617S	PHI	SC-75	Public marking directory
2PC4617S	PHI	SC-75/SOT416	Public marking directory
2PD601AS	NXP	SC-59	Public marking directory
2PD601AS	PHI	SC-59/SOT346	Public marking directory
2SD1819A-S	PANASONIC ^*	SC-70	Public marking directory
2SD874-S	MCC	SOT-89	Public marking directory
AZ23C10	MCC	SOT-23	Public marking directory
BU4309F	ROHM ^*	SOP-4	Public marking directory
BU4309FWE	ROHM ^*	VSOF-5	Public marking directory
BU4309G	ROHM ^*	SSOP-5	Public marking directory
BZX284-C43	PHI	SOD-110	Public marking directory
BZX284-C43	PHI	SOD110	Public marking directory
CD-0603-Z20	BOURNS ^*	0603	Public marking directory
CD-1005-Z20	CDE ^*	—	Public marking directory
DDZ47S	DIODES	SOD-323	Public marking directory
DDZ5V1B	DIODES	—	Public marking directory
DDZX47TS	DIODES ^*	SOT-363	Public marking directory
DDZX47W	DIODES ^*	SOT-323	Public marking directory
PDZ30B	PHI	SOD-323	Public marking directory
PDZ30B	PHI	SC-76/SOD323	Public marking directory
2PC4617SJ	—	SOT-490 18ta - 3a Phi	Public marking directory
2SD2496-S	—	SOT-23 16ta - 3a Pan	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 “Z”

Z1 Z2 Z3 Z4 Z6 Z8 ZC ZQ ZR ZX

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.