HX811T from HX hengjiaxing, in a SOT-143. 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	GND	power_in	Ground / negative supply reference (0 V).
2	RESET	output	Active-low reset output (open-drive push-pull). Pulled low when VCC < Vth (3.08 V typ for HX811T) or when MR is low; released high after the Trp delay (85-900 ms, 500 ms typ). VOL ≤ 0.5 V @ ISINK = 3.2 mA; VOH ≥ 0.8·VCC @ ISOURCE = 500 µA.
3	MR	input	Active-low manual-reset / enable input. Drive low to force RESET low; release high to allow the Trp reset-delay timer to run out and release RESET. VIH ≥ 0.7·VCC, VIL ≤ 0.2·VCC; minimum pulse width tMR = 10 µs; input pull current IMR up to 25 µA.
4	VCC	power_in	Positive supply input, 1.0 V to 6.0 V operating (6.5 V absolute max). Monitored against the internal Vth threshold (3.08 V ±2.5% for HX811T). Quiescent current ICCH ≈ 1-5 µA when MR = VCC.

Key specifications

Parameter	Value
Manufacturer	HX hengjiaxing
Package	SOT-143
Category	PMIC
Pins	4

Ordering variants

Same part, different packaging or reel option.

HX811T

CAD (KiCad official)

Symbol: HX811T
Footprint: Package_TO_SOT_SMD:SOT-143
3D model: SOT-143 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HX hengjiaxing datasheet (3 pp, sha256 4238571228a83ddb, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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