component
LM331AU-S5TR
Public Made by Adomby adom
3PEAK Comparators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM331AU-S5TR
3PEAK · Comparators · SOT-23-5
LM331AU-S5TR from 3PEAK, in a SOT-23-5. 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 | -IN | input | Inverting comparator input; voltage range can go from V- to V+ - 1.5V. |
| 2 | V- | power_in | Negative supply, normally tied to ground; V+ to V- must be 2.5V to 36V, with a 0.1µF bypass capacitor if not grounded. |
| 3 | +IN | input | Non-inverting comparator input with the same voltage range as -IN (V- to V+ - 1.5V). |
| 4 | OUT | output | Open-collector comparator output, with voltage range extending to within millivolts of each supply rail. |
| 5 | V+ | power_in | Positive supply, typically 2.5V to 36V (split supplies allowed if V+ to V- is 2.5V to 36V), with a 0.1µF bypass capacitor close to the part. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | 3PEAK |
| Package | SOT-23-5 |
| Category | Operational Amplifier/Comparator |
| Pins | 5 |
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 | VDD | 2.5 | 36 | V | ● full operating temperature range (-40°C ~ +125°C) | 3 | |
| Input Offset Voltage (LM331A, LM331AU, LM331AU2) | VOS | -6 | 0.6 | 6 | mV | VCC = 5 V to MAX, VIC = VICR(min), VO = 1.4V, -40°C ~ +125°C ● | 3 |
| Input Bias Current | IB | 4 | nA | VO = 1.4V | 3 | ||
| Common-mode Input Voltage Range (25°C) | VCM | 0 | V | 25°C; upper limit printed as VDD-1.5 | 3 | ||
| Common-mode Input Voltage Range (full temperature) | VCM | 0 | V | -40°C ~ +125°C ●; upper limit printed as VDD-2 | 3 | ||
| Large-signal Differential Voltage Amplification | AVD | 50 | 400 | V/mV | VCC = 15 V, VO = 1.4 V to 11.4 V, RL ≥ 15 kΩ to VCC | 3 | |
| High-level Output Current | IOH | 25 | 200 | nA | VOH = 5 V, VID = 1 V | 3 | |
| Low-level Output Voltage | VOL | 250 | 400 | mV | IOL = 4mA, VID = −1V | 3 | |
| Low-level Output Voltage (full temperature) | VOL | 500 | mV | IOL = 4mA, VID = −1V, -40°C ~ +125°C ● | 3 | ||
| Low-level Output Current | IOL | 10 | mA | VOL = 1.5 V, VID = -1 V | 3 | ||
| Quiescent Current per Comparator (VCC = 5 V) | IQ | 90 | 300 | μA | VCC = 5 V | 3 | |
| Quiescent Current per Comparator (VCC = 36 V) | IQ | 90 | 300 | μA | VCC = 36 V | 3 | |
| Input Current (+IN, -IN) | -20 | 20 | mA | +IN, -IN, Note 2 | 2 | ||
| Output Current (OUT) | -20 | 20 | mA | OUT | 2 | ||
| Operating Temperature Range | -40 | 125 | °C | 2 | |||
| Maximum Junction Temperature | 150 | °C | 2 | ||||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Lead Temperature (Soldering) | 260 | °C | Soldering, 10 sec | 2 | |||
| ESD Human Body Model | HBM | 4 | kV | ANSI/ESDA/JEDEC JS-001 | 2 | ||
| ESD Charged Device Model | CDM | 2 | kV | ANSI/ESDA/JEDEC JS-002 | 2 | ||
| Thermal Resistance Junction-to-Ambient (5-Pin SOT) | RθJA | 118.3 | ℃/W | 5-Pin SOT | 2 |
CAD (KiCad official)
- Symbol:
LM331AU-S5TR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lm331au-s5tr-etched.step/lm331au-s5tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm331au-s5tr.step/lm331au-s5tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: 3PEAK datasheet (13 pp, sha256
a1feff74578eb317, retrieved 2026-11-04, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).
# LM331AU-S5TR
**3PEAK** · Comparators · SOT-23-5
LM331AU-S5TR from 3PEAK, in a SOT-23-5. 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 | -IN | input | Inverting comparator input; voltage range can go from V- to V+ - 1.5V. |
| 2 | V- | power_in | Negative supply, normally tied to ground; V+ to V- must be 2.5V to 36V, with a 0.1µF bypass capacitor if not grounded. |
| 3 | +IN | input | Non-inverting comparator input with the same voltage range as -IN (V- to V+ - 1.5V). |
| 4 | OUT | output | Open-collector comparator output, with voltage range extending to within millivolts of each supply rail. |
| 5 | V+ | power_in | Positive supply, typically 2.5V to 36V (split supplies allowed if V+ to V- is 2.5V to 36V), with a 0.1µF bypass capacitor close to the part. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | 3PEAK |
| Package | SOT-23-5 |
| Category | Operational Amplifier/Comparator |
| Pins | 5 |
## 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 | VDD | 2.5 | | 36 | V | ● full operating temperature range (-40°C ~ +125°C) | 3 |
| Input Offset Voltage (LM331A, LM331AU, LM331AU2) | VOS | -6 | 0.6 | 6 | mV | VCC = 5 V to MAX, VIC = VICR(min), VO = 1.4V, -40°C ~ +125°C ● | 3 |
| Input Bias Current | IB | | 4 | | nA | VO = 1.4V | 3 |
| Common-mode Input Voltage Range (25°C) | VCM | 0 | | | V | 25°C; upper limit printed as VDD-1.5 | 3 |
| Common-mode Input Voltage Range (full temperature) | VCM | 0 | | | V | -40°C ~ +125°C ●; upper limit printed as VDD-2 | 3 |
| Large-signal Differential Voltage Amplification | AVD | 50 | | 400 | V/mV | VCC = 15 V, VO = 1.4 V to 11.4 V, RL ≥ 15 kΩ to VCC | 3 |
| High-level Output Current | IOH | 25 | | 200 | nA | VOH = 5 V, VID = 1 V | 3 |
| Low-level Output Voltage | VOL | | 250 | 400 | mV | IOL = 4mA, VID = −1V | 3 |
| Low-level Output Voltage (full temperature) | VOL | | | 500 | mV | IOL = 4mA, VID = −1V, -40°C ~ +125°C ● | 3 |
| Low-level Output Current | IOL | 10 | | | mA | VOL = 1.5 V, VID = -1 V | 3 |
| Quiescent Current per Comparator (VCC = 5 V) | IQ | | 90 | 300 | μA | VCC = 5 V | 3 |
| Quiescent Current per Comparator (VCC = 36 V) | IQ | | 90 | 300 | μA | VCC = 36 V | 3 |
| Input Current (+IN, -IN) | | -20 | | 20 | mA | +IN, -IN, Note 2 | 2 |
| Output Current (OUT) | | -20 | | 20 | mA | OUT | 2 |
| Operating Temperature Range | | -40 | | 125 | °C | | 2 |
| Maximum Junction Temperature | | | | 150 | °C | | 2 |
| Storage Temperature Range | | -65 | | 150 | °C | | 2 |
| Lead Temperature (Soldering) | | | | 260 | °C | Soldering, 10 sec | 2 |
| ESD Human Body Model | HBM | 4 | | | kV | ANSI/ESDA/JEDEC JS-001 | 2 |
| ESD Charged Device Model | CDM | 2 | | | kV | ANSI/ESDA/JEDEC JS-002 | 2 |
| Thermal Resistance Junction-to-Ambient (5-Pin SOT) | RθJA | | 118.3 | | ℃/W | 5-Pin SOT | 2 |
## CAD (KiCad official)
- Symbol: `LM331AU-S5TR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lm331au-s5tr-etched.step` / `lm331au-s5tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm331au-s5tr.step` / `lm331au-s5tr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [3PEAK datasheet](docs/lm331au-s5tr-datasheet.pdf) (13 pp, sha256 `a1feff74578eb317`, retrieved 2026-11-04, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/lm331au-s5tr-datasheet.pdf)