MEL7135PG from MICRONE, in a SOT-89. 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	VDD	power_in	Supply voltage input, 2.7 V to 6.0 V (absolute max -0.3 V to 7 V). Typical quiescent current ~90 μA.
2	GND	power_in	Ground / VSS reference for the device. Also serves as the thermal tab on SOT-89-3 (large center pad).
3	OUT	output	Constant-current sink output. Connect to LED cathode (LED anode to supply). Sinks a regulated ~350 mA (MEL7135) with typical dropout of 130 mV at Vout = 0.2 V. Absolute max -0.3 V to 7 V.

Key specifications

Parameter	Value
Manufacturer	MICRONE
Package	SOT-89
Category	LED-drv
Pins	3

Ordering variants

Same part, different packaging or reel option.

MEL7135PGP
MEL7135PG
MEL7135PGM
MEL7135PGT

CAD (KiCad official)

Symbol: MEL7135PG
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mel7135pg.step`	57 KB	You want the bare part, or you mark your own boards.
`mel7135pg-etched.step`	1.1 MB	You want the part with `MEL7135PG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 310 faces against 42 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: MICRONE datasheet (5 pp, sha256 d94695295257fc74, retrieved 2026-08-17, tier: lcsc)
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