HX61CC3302MR from HX hengjiaxing, in a SOT-23-3L. 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	VOUT	output	Detector output. CMOS push-pull output (this variant, suffix 'C'). Drives HIGH when VIN ≥ VDET (3.3V typ) and LOW when VIN falls below VDET; hysteresis Vs = 1.05 × VDET on the rising edge. IOL ≥ 0.5 mA at VOUT=0.2V, VIN=2V.
2	VSS	power_in	Chip ground reference (0 V). Note SOT-23-3 pin 2 is VSS, not VIN - pin ordering differs from the TO-92/SOT-89 variants.
3	VIN	power_in	Startup/supply input and monitored voltage (VDD = VIN per electrical spec). Operating range 1.5V-12V (abs max 15V). This is both the sensed voltage and the chip's own supply rail.

Key specifications

Parameter	Value
Manufacturer	HX hengjiaxing
Package	SOT-23-3L
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

HX61CC3302MRM
HX61CC3302MRP
HX61CC3302MRT
HX61CC3302MRL
HX61CC3302MRN

CAD (KiCad official)

Symbol: HX61CC3302MR
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT-23-3L (KiCad packages3D, STEP)

Provenance

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

Datasheet: HX hengjiaxing datasheet (10 pp, sha256 2b7155d0dfb8d9d8, 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