component
LM331CXF
Public Made by Adomby adom
Jiangsu RUNIC Tech Comparators, SOT23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownLM331CXF
Jiangsu RUNIC Tech · Comparators · SOT23-5
LM331CXF from Jiangsu RUNIC Tech, in a SOT23-5. 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 input; the common-mode range is (V-) to (V+)-1.5 V at 25°C and (V+)-2.0 V over -40°C to +125°C, and inputs more than 0.5 V beyond the rails should be limited to 10 mA. |
| 2 | V- | power_in | Negative (lowest) power supply pin; supply is specified as (V+)-(V-) from 3 V to 36 V single-supply, or ±1.5 V to ±18 V dual-supply. |
| 3 | +IN | input | Noninverting input with the same common-mode range as the inverting input, (V-) to (V+)-1.5 V at 25°C and (V+)-2.0 V over -40°C to +125°C. |
| 4 | OUT | output | Open-drain output that needs an external pull-up; output sink current is 27 mA typ at VO=1.5 V, VS=5 V, and output current is limited to ±55 mA absolute maximum with continuous short-circuit protection stated as a failure risk. |
| 5 | V+ | power_in | Positive (highest) power supply pin; absolute maximum supply voltage is 36 V and the operating range is 3 V to 36 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | SOT23-5 |
| Category | Amplifiers/Comparators |
| 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, single-supply (Vs=(V+)-(V-)) | Vs | 3 | 36 | V | Single-supply | 4 | |
| Supply voltage, dual-supply | Vs | 1.5 | 18 | V | Dual-supply; printed as ±1.5 (min) and ±18 (max) | 4 | |
| Supply voltage, absolute maximum | Vs | 36 | V | Vs=(V+)-(V-) | 4 | ||
| Signal input pin current | -10 | 10 | mA | Signal input pin (IN+, IN-) | 4 | ||
| Signal output pin current | -55 | 55 | mA | Signal output pin | 4 | ||
| Operating range, TA | TA | -40 | 125 | °C | Operating free-air temperature range | 4 | |
| Junction temperature | TJ | 150 | °C | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| ESD human-body model (HBM) | V(ESD) | -2000 | 2000 | V | Human-body model per ANSI/ESDA/JEDEC JS-001, all pins | 4 | |
| ESD charged device model (CDM) | V(ESD) | -1000 | 1000 | V | Charged device model per JEDEC JESD22-C101, all pins | 4 | |
| Operating supply voltage range | Vs | 3 | 36 | V | 6 | ||
| Quiescent current | IQ | 20 | 40 | uA | VS=5V, no load | 6 | |
| Quiescent current | IQ | 21 | 43 | uA | VS=36V, no load, TA=-40C to +125C | 6 | |
| Input offset voltage | VOS | -4.5 | 0.6 | 4.5 | mV | VS=5V to 36V | 6 |
| Input offset voltage | VOS | -5 | 5 | mV | VS=5V to 36V, TA=-40C to +125C | 6 | |
| Input bias current | IB | 10 | 50 | pA | TA=25C | 6 | |
| Input bias current | IB | 100 | nA | TA=-40C to +125C | 6 | ||
| Input offset current | IOS | 10 | 50 | pA | TA=25C | 6 | |
| Input offset current | IOS | 100 | nA | TA=-40C to +125C | 6 | ||
| Large signal differential voltage amplification | AVD | 50 | 200 | V/mV | VS=15V, Vo=1.4V to 11.4V, RL≥15k to (V+) | 6 | |
| Low-level output voltage | VOL | 210 | 300 | mV | Isink≤4mA, VID=-1V | 6 | |
| Output current (sinking) | IOL | 27 | mA | VO=1.5V; VID=-1V; Vs=5V | 6 | ||
| High-level output leakage current | ILEAK | 2 | 20 | nA | (V+)=Vo=5V; VID=1V | 6 | |
| High-level output leakage current | ILEAK | 4 | 50 | nA | (V+)=Vo=36V; VID=1V | 6 | |
| Junction-to-ambient thermal resistance | RθJA | 273.8 | °C/W | SOT23-5 | 4 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 126.8 | °C/W | SOT23-5 | 4 | ||
| Junction-to-board thermal resistance | RθJB | 85.9 | °C/W | SOT23-5 | 4 | ||
| Junction-to-top characterization parameter | ΨJT | 10.9 | °C/W | SOT23-5 | 4 | ||
| Junction-to-board characterization parameter | ΨJB | 84.9 | °C/W | SOT23-5 | 4 | ||
| Propagation delay H to L | TPHL | 7.8 | us | Vs=5V, RPU=5.1KΩ, Overdrive=10mV | 6 | ||
| Propagation delay H to L | TPHL | 2 | us | Vs=5V, RPU=5.1KΩ, Overdrive=100mV | 6 | ||
| Propagation delay H to L | TPHL | 11.5 | us | Vs=36V, RPU=5.1KΩ, Overdrive=10mV | 6 | ||
| Propagation delay H to L | TPHL | 3 | us | Vs=36V, RPU=5.1KΩ, Overdrive=100mV | 6 | ||
| Propagation delay L to H | TPLH | 28 | us | Vs=5V, RPU=5.1KΩ, Overdrive=10mV | 6 | ||
| Propagation delay L to H | TPLH | 6.1 | us | Vs=5V, RPU=5.1KΩ, Overdrive=100mV | 6 | ||
| Propagation delay L to H | TPLH | 29 | us | Vs=36V, RPU=5.1KΩ, Overdrive=10mV | 6 | ||
| Propagation delay L to H | TPLH | 7.1 | us | Vs=36V, RPU=5.1KΩ, Overdrive=100mV | 6 |
CAD (KiCad official)
- Symbol:
LM331CXF - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT23-5 (KiCad packages3D, STEP)
- 3D model files:
lm331cxf-etched.step/lm331cxf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm331cxf.step/lm331cxf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Jiangsu RUNIC Tech datasheet (10 pp, sha256
02baed1f69fd6072, 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).