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sgm811-txka4

Public Made by Adom

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SGMICRO Supervisor and Reset ICs, SOT-143. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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README

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SGM811-TXKA4

SGMICRO · Supervisor and Reset ICs · SOT-143

SGM811-TXKA4 from SGMICRO, 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 reference for the supervisor. Connect to the system 0V rail.
2 RESET output Active-low reset logic output (RESET/nRESET). Remains low while VCC is below the reset threshold (3.08V typ for -T variant) or when MR is low; then remains low for at least 150ms (240ms typ) after VCC rises above the reset threshold. Output stays valid down to VCC = 1V.
3 MR input Manual Reset input (active low, debounced). Ignores input pulses of 100ns or less (typ) and is guaranteed to accept pulses greater than 10us. Internally pulled up to VCC via ~1 MOhm; leave floating when not used.
4 VCC power_in Power supply voltage that is monitored. Operating range 1.0V-5.5V (0C-70C) or 1.2V-5.5V (-40C-125C). Typical supply current 13uA at VCC < 3.6V for the T variant. Absolute max 6V.

Key specifications

Parameter Value
Manufacturer SGMICRO
Package SOT-143
Category PMIC
Pins 4

Ordering variants

  • SGM811-TXKA4
  • SGM811-TXKA4TXN5

CAD (KiCad official)

  • Symbol: SGM811-TXKA4
  • Footprint: Package_TO_SOT_SMD:SOT-143
  • 3D model: SOT-143 (KiCad packages3D, STEP)
  • 3D model files: sgm811-txka4-etched.step / sgm811-txka4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sgm811-txka4.step / sgm811-txka4.glb are the bare package body.

Provenance

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

  • Datasheet: SGMICRO datasheet (None pp, sha256 474c8a5e58193a41, 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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