7915 from YFW, in a TO-252. 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	GND	power_in	Ground reference pin. Common return for input and output. In negative regulators, this pin is the 0V reference relative to the negative input and negative output.
2	IN	power_in	Negative unregulated input voltage. Absolute maximum VIN = -35V. Typical operating range -17.5V to -30V for -15V output. Requires a 2.2 uF input bypass capacitor to ground close to the pin.
3	OUT	power_out	Regulated -15V negative output. Delivers up to -1.5A with adequate heatsinking. Requires a 1 uF output capacitor to ground for stability. Dropout voltage ~2V at 1.5A.
TAB	IN	power_in	Exposed metal tab electrically connected to pin 2 (IN) on negative regulators of the 79xx family in TO-252. Serves as the primary thermal path to the PCB copper pour; must be connected to the same net as pin 2 (unregulated negative input).

Key specifications

Parameter	Value
Manufacturer	YFW
Package	TO-252
Category	PMIC
Pins	4

CAD (KiCad official)

Symbol: 7915
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`7915.step`	119 KB	You want the bare part, or you mark your own boards.
`7915-etched.step`	970 KB	You want the part with `7915` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 257 faces against 83 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: YFW datasheet (4 pp, sha256 825b5a9a988e5d00, 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