PNDS / Marking codes / RP

Identify an unknown SMD part: marking code “RP”

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.

21 candidates 14 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
1SMA16A	ON	—	Public marking directory
BD5353FVE	ROHM ^*	VSOF-5	Public marking directory
BD5353G	ROHM ^*	SSOP-5	Public marking directory
CMDZ8L2	CSC CENTRAL SEMIC.CORP.	SOD-323	Public marking directory
DDZ33	DIODES	SOD-123	Public marking directory
DDZ33S	DIODES	SOD-323	Public marking directory
DDZ33S	DIODES	—	Public marking directory
DDZ36	DIODES	—	Public marking directory
DDZX33	DIODES	SOT-23	Public marking directory
DDZX33TS	DIODES	SOT-363	Public marking directory
DDZX33W	DIODES ^*	SOT-323	Public marking directory
MCP101T-485I	MIC ^*	SOT-23	Public marking directory
PDZ22B	NXP	SOD-323	Public marking directory
SM4T27A	ST ^*	SOD-6	Public marking directory
CD214A-T70A	—	DO-214AC	Public marking directory
CHT848BWPT-R	—	SOT-323 16ta - 3a Chm	Public marking directory
P4SMAJ70A	—	DO-214AC	Public marking directory
R1122N231B	—	SOT-23-5	Public marking directory
TV04A700J	—	DO-214AC	Public marking directory
XC6127C38FNR	—	SSOT-24	Public marking directory
XC6224B21BNR	—	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 R7 RHM RE RB

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.