HT6872 from Jiaxing Heroic Elec Tech, in a SOP-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	CTRL	input	Mode-select input. Three operating modes are chosen by DC level on CTRL: ACF mode (V_CTRL >= 1.20 V, typ. up to VDD), ACF-Off mode (0.40 V .. 0.90 V, typ. 0.80 V), and shutdown / SD mode (V_CTRL <= 0.20 V ~ VSS). Recommended external RC filter R_CTRL=10 kΩ, C_CTRL=0.1 uF (time constant >= 1 ms).
2	BYPASS	passive	Internal analog reference bypass. Nominal voltage V_BYPASS = VDD/2. Bypass to GND with C_B = 1 uF for noise filtering / PSRR.
3	IN-	input	Inverting analog audio input (differential negative). AC-coupled through C_IN = 0.1 uF and R_IN = 12 kΩ. For single-ended use, this pin is tied through matching C_IN/R_IN to ground.
4	IN+	input	Non-inverting analog audio input (differential positive). AC-coupled through C_IN = 0.1 uF and R_IN = 12 kΩ. Voltage gain Av = 200/R_IN (approx. 23.5 dB with R_IN=12 kΩ). Source impedance Z_OUT should be <= 600 Ω.
5	OUT+	output	Non-inverting Class-D BTL speaker output (BTL+). Directly drives a 4 Ω or 8 Ω speaker without an LC filter. Paired with OUT- as differential H-bridge output.
6	VDD	power_in	Positive supply. Recommended 2.5 V .. 6.5 V (absolute max 6.5 V). Decouple with C_S = 1 uF close to the pin. UVLO trip approx. V_UVLH=2.06 V rising, V_UVLL=1.90 V falling.
7	GND	power_in	Device ground (0 V). SOP-8 combines analog and power ground on this single pin; in the WLCSP-9 variant AGND and PGND are separated.
8	OUT-	output	Inverting Class-D BTL speaker output (BTL-). Directly drives a 4 Ω or 8 Ω speaker without an LC filter. Paired with OUT+ as differential H-bridge output.

Key specifications

Parameter	Value
Manufacturer	Jiaxing Heroic Elec Tech
Package	SOP-8
Category	Op-amp/Cmp
Pins	8

CAD (KiCad official)

Symbol: HT6872
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ht6872.step`	122 KB	You want the bare part, or you mark your own boards.
`ht6872-etched.step`	1.5 MB	You want the part with `HT6872` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 362 faces against 147 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: Jiaxing Heroic Elec Tech datasheet (12 pp, sha256 6f4e688d6dc656d6, 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