PNDS / Marking codes / EIC

Identify an unknown SMD part: marking code “EIC”

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 14 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
104H	Hammond	DO-214AC	Public marking directory
106C	Hammond	DO-214AC	Public marking directory
108C	Keystone	DO-214AC	Public marking directory
10C	MCC	DO-214AB	Public marking directory
10D2	R+O	DO-214AC	Public marking directory
10D4	R+O	DO-214AC	Public marking directory
10D5	R+O	DO-214AC	Public marking directory
10D7	HEL	DO-214AC	Public marking directory
15C	MCC	DO-214AB	Public marking directory
C100A	TDK ^*	DO-214AB	Public marking directory
C160	TDK ^*	DO-214AC	Public marking directory
C160A	TDK ^*	DO-214AB	Public marking directory
S556	TOS ^*	SMAJ48A	Public marking directory
S571	ABLIC ^*	SMAJ60A	Public marking directory
103D	—	DO-214AC	Public marking directory
103G	—	DO-214AC	Public marking directory
103J	—	DO-214AC	Public marking directory
104D	—	DO-214AC	Public marking directory
105B	—	DO-214AC	Public marking directory
105G	—	DO-214AC	Public marking directory
106I	—	DO-214AC	Public marking directory
107F	—	DO-214AC	Public marking directory
109B	—	DO-214AC	Public marking directory
10A	—	DO-214AB	Public marking directory
10B1	—	DO-214AC	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 “E”

EK EV E0 E1 E2 E3 E4 E5 E6 E8

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.