XYC-PT0603AC-LB1-S from NEWOPTO, in a 0603. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	C	passive	Collector of the NPN phototransistor. Typically tied to the positive supply (application circuit shows Vce=5 V at this terminal). Vceo(max) = 30 V; collector-emitter saturation voltage Vce(sat) <= 0.4 V at Ic=2 mA, Ee=1 mW/cm^2.
2	E	passive	Emitter of the NPN phototransistor. Application circuit uses this as the Vout / signal terminal, pulled to ground through a load resistor (Rss = 1 kOhm recommended). Reverse (emitter-collector) breakdown Veco = 5 V.

Key specifications

Parameter	Value
Manufacturer	NEWOPTO
Package	0603
Category	Sensor
Pins	2

Ordering variants

Same part, different packaging or reel option.

XYC-PT0603AC-LB1-S

CAD (KiCad official)

Symbol: XYC-PT0603AC-LB1-S
Footprint: Resistor_SMD:R_0603_1608Metric
3D model: 0603 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: NEWOPTO datasheet (14 pp, sha256 454aa90eb06d34f5, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF