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Generated by kicad-footprint-generator · KiCad file format 20260206

Name	Last commit message	Last updated
docs	rpi-352: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	5d ago
viewers	pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (fab-chamfer, synthesised, bottom-right) · Ray	1mo ago
package.json	Publish 0.2.0 · Ray	1mo ago
pads.json	pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (fab-chamfer, synthesised, bottom-right) · Ray	1mo ago
page.json	rpi-352: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray	1d ago
README.md	rpi-352: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray	19d ago
rpi-352-etched.fit.json	rpi-352: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	5d ago
rpi-352-etched.glb	rpi-352: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	5d ago
rpi-352-etched.step	rpi-352: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	5d ago
rpi-352.glb	Publish 0.1.0 · Ray	1mo ago
rpi-352.kicad_mod	Publish 0.1.0 · Ray	1mo ago
rpi-352.kicad_sym	Publish 0.1.0 · Ray	1mo ago
rpi-352.lbr	rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 0 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray	1mo ago
rpi-352.step	Publish 0.1.0 · Ray	1mo ago

RPI-352

ROHM Semicon · Photointerrupters - Slot Type - Transistor Output · DIP-4

RPI-352 from ROHM Semicon, in a DIP-4. 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	Cathode	passive	Infrared LED emitter cathode. Forward current IF up to 50 mA, VF typ 1.3 V (max 1.6 V) at IF = 50 mA. Reverse voltage VR max 5 V.
2	Anode	passive	Infrared LED emitter anode. Drive through a current-limiting resistor from VCC; LED power dissipation PD max 80 mW.
3	Collector	passive	NPN phototransistor collector. VCEO max 30 V, IC max 30 mA, collector power dissipation PC max 80 mW. Typical IC = 1.0 mA at VCE = 5 V, IF = 20 mA (unblocked slot).
4	Emitter	passive	NPN phototransistor emitter. Emitter-collector reverse voltage VECO max 4.5 V. Usually tied to GND via load resistor or directly.

Key specifications

Parameter	Value
Manufacturer	ROHM Semicon
Package	DIP-4
Category	Sensor
Pins	4

CAD (KiCad official)

Symbol: RPI-352
Footprint: Package_DIP:DIP-4_W7.62mm
3D model: DIP-4 (KiCad packages3D, STEP)
3D model files: rpi-352-etched.step / rpi-352-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rpi-352.step / rpi-352.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`rpi-352.step`	158 KB	You want the bare part, or you mark your own boards.
`rpi-352-etched.step`	1.4 MB	You want the part with `RPI-352` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 346 faces against 80 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: ROHM Semicon datasheet (6 pp, sha256 d22cb83513719e90, retrieved 2026-08-17, tier: manufacturer)
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