IR2104STRPBF-JSM from JSMSEMI, in a SOIC-8. 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	VCC	power_in	Low-side and logic fixed supply. Recommended operating range 10V to 20V, absolute max 25V; referenced to VSS.
2	IN	input	Logic input for high-side and low-side gate driver outputs, in phase with HO. Logic '1' threshold >=2.5V, logic '0' <=0.8V (VCC = 10V to 20V).
3	SD	input	Active-low shutdown logic input. When asserted low, turns off both HO and LO outputs. Shares the IN input voltage thresholds (VIH >=2.5V, VIL <=0.8V).
4	VSS	power_in	Low-side return / logic ground reference for VCC, IN and SD.
5	LO	output	Low-side gate drive output, referenced to VSS. Swings between VSS and VCC; typical source/sink capability 300mA/600mA.
6	VS	power_in	High-side floating supply return (bridge midpoint / high-side MOSFET source). Operating range -9V to +700V; tolerates transient negative VS down to -50V for 50ns pulses.
7	HO	output	High-side gate drive output, referenced to VS. Swings between VS and VB; typical source/sink capability 300mA/600mA.
8	VB	power_in	High-side floating supply (bootstrap capacitor positive terminal). Recommended VS+10V to VS+20V; absolute max 725V referenced to VSS.

Key specifications

Parameter	Value
Manufacturer	JSMSEMI
Package	SOIC-8
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

IR2104STRPBF-JSM

CAD (KiCad official)

Symbol: IR2104STRPBF-JSM
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: JSMSEMI datasheet (9 pp, sha256 d6700a10fcbbdb80, 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