Identify an unknown SMD part: marking code “DBP”

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 2 with manufacturer source-traceable

Candidate part numbers

Part number	Manufacturer	Package	Mapping source
2SD1766B-P	ROHM *	SC-62	Public marking directory
XC6117B022MR	TOREX *	SOT-23-5	Public marking directory
A5913B	—	SMA5913B	Public marking directory
A5914A	—	SMA5914A	Public marking directory
A5914B	—	SMA5914B	Public marking directory
A5915A	—	SMA5915A	Public marking directory
A5915B	—	SMA5915B	Public marking directory
A5916A	—	SMA5916A	Public marking directory
A5916B	—	SMA5916B	Public marking directory
A5917A	—	SMA5917A	Public marking directory
A5917B	—	SMA5917B	Public marking directory
A5918A	—	SMA5918A	Public marking directory
A5918B	—	SMA5918B	Public marking directory
A5919A	—	SMA5919A	Public marking directory
A5919B	—	SMA5919B	Public marking directory
A5920A	—	SMA5920A	Public marking directory
A5920B	—	SMA5920B	Public marking directory
A5921A	—	SMA5921A	Public marking directory
A5921B	—	SMA5921B	Public marking directory
A5922A	—	SMA5922A	Public marking directory
A5922B	—	SMA5922B	Public marking directory
A5923A	—	SMA5923A	Public marking directory
A5923B	—	SMA5923B	Public marking directory
A5924A	—	SMA5924A	Public marking directory
A5924B	—	SMA5924B	Public marking directory

How we narrow this down

1. Package first — SOT-23 vs SOD-123 vs SC-59 eliminates most candidates immediately.
2. Pin count and body size — a 3-pin SOT-23 LDO cannot be a 6-pin dual transistor.
3. Marking style — laser-marked parts are usually newer production; ink marking often indicates older or second-source vendors.
4. Circuits around it — a part sitting on a rail with an inductor is a regulator, not a diode.
5. 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 “D”

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.