FH3016FDY from XIN FEI HONG, in a SOT-23-6. 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	DOUT	output	Discharge control output. Drives the gate (G) of the external discharge-control N-MOS Q2. High level ~ VDD-0.2V (IDOUT=10uA), low level ~ 0.2V.
2	VM	input	Charge/discharge current-sense input. Connects through a current-limit resistor (typ. 1kΩ, R2) to the source (S) of the external charge-control N-MOS Q1, sensing the voltage drop across Q1+Q2 to detect over-current and short-circuit conditions. Internally pulled up to VDD via RVMD (typ. 1.5MΩ) and down to VSS via RVMS (typ. 20kΩ).
3	COUT	output	Charge control output. Drives the gate (G) of the external charge-control N-MOS Q1. High level ~ VDD-0.2V, internal pull-down to VM ~ 4.0MΩ in protection state.
4	NC	unconnected	No connection. Leave floating.
5	VDD	power_in	Power supply (positive battery terminal). Connect to the battery '+' through R1 (recommended 330Ω) and bypass to VSS with a 0.1uF ceramic capacitor (C1). Operating range 1.5V to 6V, absolute max -0.3V to +6V.
6	VSS	power_in	Ground / negative battery terminal. All voltage thresholds are referenced to VSS.

Key specifications

Parameter	Value
Manufacturer	XIN FEI HONG
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

FH3016FDY

CAD (KiCad official)

Symbol: FH3016FDY
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`fh3016fdy.step`	97 KB	You want the bare part, or you mark your own boards.
`fh3016fdy-etched.step`	1.7 MB	You want the part with `FH3016FDY` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 420 faces against 117 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: XIN FEI HONG datasheet (11 pp, sha256 b4eb49239e5357da, 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