PNDS / Marking codes / R7

Identify an unknown SMD part: marking code “R7”

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 11 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
BFR106	PHI	SOT23	Public marking directory
BZX84C8V2TS	DIODES	—	Public marking directory
HSMS-8207	AGILENT	SOT145	Public marking directory
PDZ4.3B	PHI	SOD-323	Public marking directory
R1121N271B	RICOH ^*	SOT-23-5	Public marking directory
R3111Q571A	RICOH ^*	SC-82AB	Public marking directory
R3116Q141C	RICOH ^*	SC-82AB	Public marking directory
R5426D126FA	RICOH ^*	—	Public marking directory
R5426N126FA	RICOH ^*	SOT-23-6	Public marking directory
TC54VN5702ECB	MIC ^*	SOT-23	Public marking directory
TC54VN5702MB	MIC ^*	SOT-89	Public marking directory
BZX84-C8V2T	—	SOT-523	Public marking directory
ELM7637LCB	—	SOT-23 16vdc VD7 3d Elm	Public marking directory
ELM9737CAB	—	SOT-89	Public marking directory
FS1M	—	DO-214AC	Public marking directory
KN4F3R	—	SC-75	Public marking directory
RP104Q251D	—	SC-82AB	Public marking directory
SRC1207E	—	SOT-523	Public marking directory
SRC1207EF	—	SOT-523F	Public marking directory
SRC1207U	—	SOT-323	Public marking directory
SRC1207UF	—	SOT-323F	Public marking directory
XC61CN5702M	—	SOT-23	Public marking directory
XC61CN5702N	—	SOT-143R	Public marking directory
XC61CN5702P	—	SOT-89	Public marking directory
XC6218P38N	—	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 “R”

R1 R2 R3 R4 R5 R6 RHM RE RB R8

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.