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sgm811-txka4
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SGMICRO Supervisor and Reset ICs, SOT-143. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# 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)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [SGMICRO datasheet](docs/sgm811-txka4-datasheet.pdf) (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](docs/sgm811-txka4-datasheet.pdf)
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "sgm811-txka4",+ "version": "0.1.0",+ "type": "component",+ "description": "SGMICRO Supervisor and Reset ICs, SOT-143. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "pmic",+ "sgm811-txka4"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "sgm811-txka4.kicad_sym",+ "sgm811-txka4.kicad_mod",+ "sgm811-txka4.glb",+ "sgm811-txka4.step",+ "sgm811-txka4.lbr",+ "docs/hero.png",+ "docs/sgm811-txka4-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}