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UIC811G-B-3
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UTC(Unisonic Tech) Monitors & Reset Circuits, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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UIC811G-B-3
UTC(Unisonic Tech) · Monitors & Reset Circuits · SOT-23-3
UIC811G-B-3 from UTC(Unisonic Tech), in a SOT-23-3. 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 reset supervisor. |
| 2 | RESET | output | Push-pull active-low reset output that falls low when VCC drops below the reset threshold voltage and remains asserted for at least 140ms after VCC rises above the threshold. |
| 3 | VCC | power_in | Input of power supply; operating voltage range is 1V to 6V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | SOT-23-3 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating Voltage Range | VCC | 1 | 6 | V | TA =-40~+85°C | 5 | |
| Reset Voltage Threshold | VTH | 2.85 | 2.93 | 3 | V | 5 | |
| Reset Timeout Period | tRST | 140 | 240 | 560 | ms | 5 | |
| Reset Output Voltage | VOH | 2.64 | V | ISOURCE =500µA | 5 | ||
| MR Input Threshold | VIH | 2.31 | V | 5 | |||
| MR Input Threshold | VIL | 0.825 | V | 5 | |||
| MR Minimum Pulse Width | 10 | µS | 5 | ||||
| MR to Reset Delay | 0.5 | µS | 5 | ||||
| MR Pull-Up Resistance | 10 | 20 | 40 | kΩ | 5 | ||
| MR Glitch Immunity | 100 | ns | 5 | ||||
| Supply Current | ICC | 5 | 10 | µA | VCC=3.3V, no load | 5 | |
| Reset Output Voltage (low) | VOL | 0.3 | V | VCC = VTH min, ISINK =1.2mA | 5 | ||
| Input Voltage | VCC | -0.3 | 6 | V | 5 | ||
| RESET Voltage | VRESET | -0.3 | 6 | V | 5 | ||
| Input Current (VCC, MR) | IIN | 20 | mA | 5 | |||
| Output Current (RESET) | IOUT | 20 | mA | 5 | |||
| Rate of Rise | VCC(RR) | 100 | V/µs | 5 | |||
| Power Dissipation (SOT-23-3/SOT-23) | PD | 300 | mW | TA =70°C | 5 | ||
| Junction Temperature | TJ | 150 | °C | 5 | |||
| Operating Temperature | TOPR | -40 | 105 | °C | 5 | ||
| Storage Temperature | TSTG | -65 | 150 | °C | 5 |
CAD (KiCad official)
- Symbol:
UIC811G-B-3 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
uic811g-b-3-etched.step/uic811g-b-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uic811g-b-3.step/uic811g-b-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC(Unisonic Tech) datasheet (9 pp, sha256
cba096381be4ddc3, retrieved 2026-10-27, tier: manufacturer) - 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).
# UIC811G-B-3
**UTC(Unisonic Tech)** · Monitors & Reset Circuits · SOT-23-3
UIC811G-B-3 from UTC(Unisonic Tech), in a SOT-23-3. 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 reset supervisor. |
| 2 | RESET | output | Push-pull active-low reset output that falls low when VCC drops below the reset threshold voltage and remains asserted for at least 140ms after VCC rises above the threshold. |
| 3 | VCC | power_in | Input of power supply; operating voltage range is 1V to 6V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | SOT-23-3 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating Voltage Range | VCC | 1 | | 6 | V | TA =-40~+85°C | 5 |
| Reset Voltage Threshold | VTH | 2.85 | 2.93 | 3 | V | | 5 |
| Reset Timeout Period | tRST | 140 | 240 | 560 | ms | | 5 |
| Reset Output Voltage | VOH | 2.64 | | | V | ISOURCE =500µA | 5 |
| MR Input Threshold | VIH | 2.31 | | | V | | 5 |
| MR Input Threshold | VIL | | | 0.825 | V | | 5 |
| MR Minimum Pulse Width | | 10 | | | µS | | 5 |
| MR to Reset Delay | | | | 0.5 | µS | | 5 |
| MR Pull-Up Resistance | | 10 | 20 | 40 | kΩ | | 5 |
| MR Glitch Immunity | | | | 100 | ns | | 5 |
| Supply Current | ICC | | 5 | 10 | µA | VCC=3.3V, no load | 5 |
| Reset Output Voltage (low) | VOL | | | 0.3 | V | VCC = VTH min, ISINK =1.2mA | 5 |
| Input Voltage | VCC | -0.3 | | 6 | V | | 5 |
| RESET Voltage | VRESET | -0.3 | | 6 | V | | 5 |
| Input Current (VCC, MR) | IIN | | | 20 | mA | | 5 |
| Output Current (RESET) | IOUT | | | 20 | mA | | 5 |
| Rate of Rise | VCC(RR) | | | 100 | V/µs | | 5 |
| Power Dissipation (SOT-23-3/SOT-23) | PD | | | 300 | mW | TA =70°C | 5 |
| Junction Temperature | TJ | | | 150 | °C | | 5 |
| Operating Temperature | TOPR | -40 | | 105 | °C | | 5 |
| Storage Temperature | TSTG | -65 | | 150 | °C | | 5 |
## CAD (KiCad official)
- Symbol: `UIC811G-B-3`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `uic811g-b-3-etched.step` / `uic811g-b-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `uic811g-b-3.step` / `uic811g-b-3.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [UTC(Unisonic Tech) datasheet](docs/uic811g-b-3-datasheet.pdf) (9 pp, sha256 `cba096381be4ddc3`, retrieved 2026-10-27, tier: manufacturer)
- **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/uic811g-b-3-datasheet.pdf)