# HX61CN4402MR

**HX hengjiaxing** · Supervisor And Reset ICs · SOT-23-3L

HX61CN4402MR from HX hengjiaxing, in a SOT-23-3L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VOUT | output | Chip output terminal, which is N-channel open-drain on this N-type part. |
| 2 | VSS | power_in | Chip ground terminal. |
| 3 | VIN | power_in | Start-up input terminal, with an operating supply range of 1.5 V to 12 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HX hengjiaxing |
| Package | SOT-23-3L |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Hysteresis voltage (stored as multiple of VDET, not volts) | VHYS | 0.02 | 0.05 | 0.1 | ×VDET | Ta=25℃ | 5 |
| Quiescent current | IDD |  | 2 | 4 | uA | Ta=25℃; 8V No Load | 5 |
| Operating voltage | VDD | 1.5 |  | 12 | V | Ta=25℃ | 5 |
| Output current | IOL | 0.5 | 1 |  | mA | Ta=25℃; 2V VOUT=0.2V | 5 |
| Detection voltage temperature coefficient | ΔVDET/ΔTa | -0.9 |  | 0.9 | mV/℃ | 0℃≤Ta≤70℃ | 5 |
| Input voltage (absolute maximum) | VIN |  |  | 15 | V |  | 3 |
| Output voltage relative to VSS (lower limit) | Vout | -0.3 |  |  | V | Printed as VSS-0.3, referenced to VSS | 3 |
| Output voltage relative to VIN (upper limit) | Vout |  |  | 0.3 | V | Printed as VIN+0.3, referenced to VIN | 3 |
| Maximum power dissipation | PD |  |  | 250 | mW |  | 3 |
| Operating temperature range | Tw | -40 |  | 85 | ℃ |  | 3 |
| Storage temperature range | Tc | -50 |  | 125 | ℃ |  | 3 |
| Soldering temperature | Th |  |  | 260 | ℃ | 10s | 3 |

## CAD (KiCad official)

- Symbol: `HX61CN4402MR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `hx61cn4402mr-etched.step` / `hx61cn4402mr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hx61cn4402mr.step` / `hx61cn4402mr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HX hengjiaxing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588904396814368768) (10 pp, sha256 `eccc71686b37aa18`, retrieved 2026-10-18, 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:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/hx61cn4402mr-datasheet.pdf)