FH9261-DCJ 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	OD	output	Discharge-control N-MOSFET gate drive output. Pulled to VDD (V_DH = VDD-0.02V typ) to enable the discharge FET during normal operation; pulled low (V_DL = 0.1V typ, 0.5V max) to inhibit discharge on over-discharge, discharge over-current, or load short-circuit. V_OD absolute-max range VSS-0.3V to VDD+0.3V.
2	CS	input	Current-sense / charger-detect input. Monitors the voltage between VSS and the pack's negative terminal (PB-) through the two series MOSFETs to detect discharge over-current (V_DIP = 240mV typ), load short-circuit (V_SIP = 0.58V typ, fixed), and charge over-current (V_CIP = -150mV typ). Also senses charger presence via V_CIP threshold. High-withstand pin: absolute-max V_CS = VDD-25V to VDD+0.3V (25V max between VDD and CS).
3	OC	output	Charge-control N-MOSFET gate drive output. Pulled to VDD (V_CH = VDD-0.02V typ) to enable the charge FET; pulled low (V_CL = 0.1V typ, 0.5V max) to inhibit charging on over-charge or charge over-current. High-withstand pin: absolute-max V_OC = VDD-25V to VDD+0.3V (survives reverse-connected charger up to 25V vs VDD).
4	NC	unconnected	No internal connection. Leave floating or tie to a copper pad; no electrical function.
5	VDD	power_in	Positive supply input. Connect to battery + through a 100Ω (100Ω typ, 200Ω max) series resistor R1 with a 0.1µF decoupling capacitor C1 from VDD to VSS. Operating range V_DSOP1 = 1.5V to 8V; absolute-max VDD-VSS = -0.3V to +10V. Operating current I_DD = 3.0µA typ / 6.0µA max at VDD=3.9V.
6	VSS	power_in	Ground / negative supply input. Connect directly to battery - (the pack common node between the cell and the two protection MOSFET sources).

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.

FH9261-DCJ

CAD (KiCad official)

Symbol: FH9261-DCJ
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
`fh9261-dcj.step`	97 KB	You want the bare part, or you mark your own boards.
`fh9261-dcj-etched.step`	1.8 MB	You want the part with `FH9261-DCJ` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 440 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 (18 pp, sha256 3215be66c4cfc32f, 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