component
SGM809B-SXN3LG
Public Made by Adomby adom
SGMICRO Supervisor And Reset ICs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSGM809B-SXN3LG
SGMICRO · Supervisor And Reset ICs · SOT-23
SGM809B-SXN3LG from SGMICRO, in a SOT-23. 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 | GND | power_in | Ground reference pin for the supervisor. |
| 2 | nRESET | output | Active-low reset output (push-pull on SGM809B): it remains low while VCC is below the reset threshold and for 240ms (TYP) after VCC rises above the threshold. |
| 3 | VCC | power_in | Power supply voltage that is monitored; the datasheet specifies operation from 1V to 5.5V at TA = +25℃ (1.25V to 5.5V over -40℃ to +125℃). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SGMICRO |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage (VCC) | VCC | 1 | 5.5 | V | TA = +25℃ | 5 | |
| Supply voltage (VCC) | VCC | 1.25 | 5.5 | V | TA = -40℃ to +125℃ | 5 | |
| Supply current | 300 | 430 | nA | VCC < 3.6V, SGM8_R/S/T, TA = +25℃ | 5 | ||
| Supply current | 590 | nA | VCC < 3.6V, SGM8_R/S/T, TA = -40℃ to +125℃ | 5 | |||
| Reset voltage threshold (SGM8_S) | VTH | 2.86 | 2.93 | 2.998 | V | VCC falling, TA = +25℃ | 5 |
| Reset voltage threshold (SGM8_S) | VTH | 2.841 | 3.018 | V | VCC falling, TA = -40℃ to +125℃ | 5 | |
| Reset active timeout period | 150 | 240 | 370 | ms | TA = +25℃ | 5 | |
| Reset active timeout period | 110 | 400 | ms | TA = -40℃ to +125℃ | 5 | ||
| RESET/nRESET output voltage low (SGM809B-R/S/T) | VOL | 0.3 | V | VCC = VTH(MIN), ISINK = 1.2mA | 5 | ||
| RESET/nRESET output voltage low (SGM809B-R/S/T/M/J) | VOL | 0.3 | V | VCC > 1V, ISINK = 50μA | 5 | ||
| Hysteresis voltage ratio | VHYS | 0.5 | % | VCC rising | 5 | ||
| Reset threshold temperature coefficient | 35 | ppm/℃ | 5 | ||||
| VCC to RESET/nRESET delay | 110 | μs | VCC falling from (VTH + VHYS) × (1 + 5%) to VTH × (1 - 5%) | 5 | |||
| Operating temperature range | -40 | 125 | ℃ | 3 | |||
| VCC | VCC | -0.3 | 6 | V | 3 | ||
| RESET, nRESET voltage | -0.3 | V | upper limit printed as VCC + 0.3V | 3 | |||
| Rate of rise, VCC | 100 | V/μs | 3 | ||||
| Junction temperature | 150 | ℃ | 3 | ||||
| Storage temperature range | -65 | 150 | ℃ | 3 | |||
| Lead temperature (soldering) | 260 | ℃ | 10s | 3 | |||
| Package thermal resistance, θJA | θJA | 250 | ℃/W | SOT-23-3 | 3 |
CAD (KiCad official)
- Symbol:
SGM809B-SXN3LG - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
sgm809b-sxn3lg-etched.step/sgm809b-sxn3lg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sgm809b-sxn3lg.step/sgm809b-sxn3lg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SGMICRO datasheet (13 pp, sha256
027d6719a2f5bf86, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).