BTS6163D from Infineon, in a TO-252-4. 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	OUT	power_out	Power output to the load. Pins 1 and 5 must be externally shorted; not shorting both outputs increases R_ON, reduces peak current capability, and degrades current-sense accuracy.
2	IN	input	Control input; activates the power switch when pulled low (shorted to ground via R_IN). Required current capability of input switch typ. 1.6 mA (max 2.4 mA); turn-off current max 30 µA. Under-voltage shutdown at V_bIN ≈ 2.5-3.5 V.
3	Vbb	power_in	Positive supply voltage. Operating range 5.5-62 V; absolute max 62 V (48 V for full short-circuit protection); load-dump 70 V. Tab and pin 3 are internally shorted. Integrated series resistor R_bb ≈ 100 Ω in the V_bb line.
Tab	Vbb	power_in	Exposed thermal tab, internally shorted to pin 3 (Vbb). Provides the primary thermal path; must be soldered to Vbb copper for the specified R_thJA (45-55 K/W on 50×50 mm 1.5 mm FR4 with 6 cm² copper).
4	IS	output	Sense/diagnostic output. In normal operation delivers a current proportional to the load current with ratio k_ILIS ≈ 9000 (I_S = I_L / k_ILIS). In fault conditions (overload, overtemperature, short circuit) sources a defined fault current I_IS,fault ≈ 4.0-7.5 mA. Requires external R_IS (typ. 1 kΩ) to signal GND; leave open if unused.
5	OUT	power_out	Power output to the load. Pins 1 and 5 must be externally shorted; not shorting both outputs increases R_ON, reduces peak current capability, and degrades current-sense accuracy.

Key specifications

Parameter	Value
Manufacturer	Infineon
Package	TO-252-4
Category	PMIC
Pins	6

CAD (KiCad official)

Symbol: BTS6163D
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252-4 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`bts6163d.step`	178 KB	You want the bare part, or you mark your own boards.
`bts6163d-etched.step`	2.0 MB	You want the part with `BTS6163D` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 511 faces against 127 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: Infineon datasheet (18 pp, sha256 bfbbb17d73f04bc9, 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