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Contents

README

markdown

HX61CN3902MR

HX hengjiaxing · Supervisor and Reset ICs · SOT-23-3L

HX61CN3902MR 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. N-channel open-drain: pulls low when VIN falls below VDET (3.9V typ.), releases (high-Z) when VIN rises above Vs = 1.05 x VDET. Requires an external pull-up resistor (100k typ. in the application circuit). IOL >= 0.5 mA at VOUT = 0.2V with VDD = 2V.
3 VIN power_in Supply / sensed input voltage. Also acts as the monitored voltage rail; VDD = VIN per the electrical characteristics. Operating range 1.5V to 12V, absolute maximum 15V.
2 VSS power_in Ground / negative supply reference for the detector.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • HX61CN3902MRM
  • HX61CN3902MRP
  • HX61CN3902MRT
  • HX61CN3902MRL
  • HX61CN3902MRN

CAD (KiCad official)

  • Symbol: HX61CN3902MR
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: hx61cn3902mr-etched.step / hx61cn3902mr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hx61cn3902mr.step / hx61cn3902mr.glb are the bare package body.

Provenance

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

  • Datasheet: HX hengjiaxing datasheet (10 pp, sha256 00052857a28661d5, 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