component
SGM803B-TXN3LG
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.
Generated by kicad-footprint-generator · KiCad file format 20260206
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SGM803B-TXN3LG
SGMICRO · Supervisor And Reset ICs · SOT-23
SGM803B-TXN3LG 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 supervisory circuit. |
| 2 | nRESET | output | Active-low reset output for the SGM803B, which is an open-drain output; it is held low when VCC falls below the reset threshold and keeps low for 240ms (TYP) after VCC exceeds the threshold. |
| 3 | VCC | power_in | Supply voltage pin, specified from 1V (TA = +25℃) to 5.5V, or 1.1V 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), TA = +25℃ | 1 | 5.5 | V | TA = +25℃ | 5 | ||
| Supply voltage (VCC), TA = -40℃ to +125℃ | 1.1 | 5.5 | V | TA = -40℃ to +125℃ | 5 | ||
| Supply current, SGM8_R/S/T | 300 | 430 | nA | VCC < 3.6V, SGM8_R/S/T, TA = +25℃ | 5 | ||
| Supply current, SGM8_R/S/T | 590 | nA | VCC < 3.6V, SGM8_R/S/T, TA = -40℃ to +125℃ | 5 | |||
| Reset voltage threshold, SGM8_T | 3.001 | 3.08 | 3.151 | V | VCC falling, TA = +25℃ | 5 | |
| Reset voltage threshold, SGM8_T | 2.966 | 3.181 | V | VCC falling, TA = -40℃ to +125℃ | 5 | ||
| Reset active timeout period | 150 | 240 | 370 | ms | TA = +25℃ | 5 | |
| Reset active timeout period | 120 | 400 | ms | TA = -40℃ to +125℃ | 5 | ||
| RESET/nRESET output voltage low (SGM803B-R/S/T) | 0.3 | V | VCC = VTH(MIN), ISINK = 1.2mA | 5 | |||
| RESET/nRESET output voltage low (SGM803B-R/S/T/M/J) | 0.3 | V | VCC > 1V, ISINK = 50μA | 5 | |||
| Reset output low / input supply voltage: VCC absolute maximum | VCC | -0.3 | 6 | V | 3 | ||
| RESET, nRESET voltage | RESET, nRESET | -0.3 | V | Maximum printed as VCC + 0.3V | 3 | ||
| Rate of rise, VCC | VCC | 100 | V/μs | 3 | |||
| Junction temperature | 150 | ℃ | 3 | ||||
| Storage temperature range | -65 | 150 | ℃ | 3 | |||
| Lead temperature (soldering) | 260 | ℃ | 10s | 3 | |||
| Operating temperature range | -40 | 125 | ℃ | 3 | |||
| Package thermal resistance, junction-to-ambient (SOT-23-3) | θJA | 250 | ℃/W | SOT-23-3 | 3 |
CAD (KiCad official)
- Symbol:
SGM803B-TXN3LG - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
sgm803b-txn3lg-etched.step/sgm803b-txn3lg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sgm803b-txn3lg.step/sgm803b-txn3lg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SGMICRO datasheet (13 pp, sha256
f6a70cf4f20d9637, retrieved 2026-10-17, 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).