component

AL8861Y-13

Public Made by Adom

by adom

Diodes Incorporated LED Drivers, SOT-89-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs al8861y-13: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
al8861y-13-etched.fit.json al8861y-13: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
al8861y-13-etched.glb al8861y-13: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
al8861y-13-etched.step al8861y-13: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
al8861y-13.glb fix footprint: SOT-89-3 -> SOT-89-5 (pad_count, 5 pins) · Ray 2mo ago
al8861y-13.kicad_mod fix footprint: SOT-89-3 -> SOT-89-5 (pad_count, 5 pins) · Ray 2mo ago
al8861y-13.kicad_sym Publish 0.1.0 · Ray 2mo ago
al8861y-13.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray 2mo ago
al8861y-13.step fix footprint: SOT-89-5 -> SOT-89-5 (3d refresh; body regenerated from the footprint F.Fab outline) · Ray 2mo ago
package.json Publish 0.2.0 · Ray 2mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
page.json al8861y-13: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md al8861y-13: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

AL8861Y-13

Diodes Incorporated · LED Drivers · SOT-89-5

AL8861Y-13 from Diodes Incorporated, in a SOT-89-5. 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 LX output Drain of the internal 40V NDMOS switching MOSFET. Connect to the inductor/freewheel-diode node of the buck power stage. RDS(on) ~0.2Ω, peak inductor current limit 2A.
2 GND power_in Device ground (0V) reference for the internal regulator and control circuitry.
3 VSET input Multi-function on/off and brightness control input. Floats internally to ~4.5V via a 1.4µA source; drive <0.2V to shut down, 0.3-2.5V DC for 0-100% analog dimming (5-100% recommended), or apply PWM (f<500Hz, 1-100% duty) via an open-drain transistor. A capacitor to GND sets soft-start (default 0.1ms, ~1.5ms per nF). Absolute max 6V.
4 ISENSE input High-side current-sense input. Connect sense resistor RS between VIN and this pin to program the nominal average LED current: IOUT(NOM) = 0.1V / RS (100mV mean sense threshold, ±13% hysteresis).
5 VIN power_in Input supply, 4.5V to 40V (absolute max 42V). Decouple to GND with a ≥10µF X7R ceramic capacitor placed close to the device.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-89-5
Category LED-drv
Pins 5

Ordering variants

  • AL8861Y-13
  • AL8861Y-13WT-7
  • AL8861Y-13MP-13

CAD (KiCad official)

  • Symbol: AL8861Y-13
  • Footprint: Package_TO_SOT_SMD:SOT-89-5
  • 3D model: SOT-89-5 (KiCad packages3D, STEP)
  • 3D model files: al8861y-13-etched.step / al8861y-13-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); al8861y-13.step / al8861y-13.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
al8861y-13.step 86 KB You want the bare part, or you mark your own boards.
al8861y-13-etched.step 1.6 MB You want the part with AL8861Y-13 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 402 faces against 26 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: Diodes Incorporated datasheet (18 pp, sha256 b1b15e2023cebf87, 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