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LM331BXF

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Jiangsu RUNIC Tech Comparators, SOT23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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LM331BXF

Jiangsu RUNIC Tech · Comparators · SOT23-5

LM331BXF 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 Noninverting input; common-mode range is (V-)+0.5 V to (V+)-1.5 V at 25°C and (V+)-2.0 V over -40°C to +125°C.
2 V- power_in Negative (lowest) power supply; single-supply operation is specified from 3 V to 32 V (VS = V+ - V-), with absolute maximum VS of 36 V.
3 -IN input Inverting input; common-mode range is (V-)+0.5 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 requires an external pull-up; VOL is 360 mV max at 4 mA sink, and high-level leakage is 20 nA max at 5 V.
5 V+ power_in Positive (highest) power supply; operates 3 V to 32 V above V-, with absolute maximum VS of 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, VS=(V+)-(V-) VS 36 V 6
Signal input pin current (IN+, IN-) -10 10 mA 6
Signal output pin current -55 55 mA 6
Operating range, TA TA -40 125 °C 6
Junction, TJ TJ -40 150 °C 6
Storage, Tstg Tstg -65 150 °C 6
Single-supply voltage VS 3 32 V 6
Dual-supply voltage (each rail magnitude, ±) VS 1.5 16 V 6
Operating Voltage Range VS 3 32 V 8
Quiescent Current IQ 65 100 uA VS=5V, no load 8
Quiescent Current IQ 100 uA VS=32V, no load, TA=-40C to +125C 8
Input offset voltage VOS -7.5 7.5 mV VS=5V to 32V 8
Input offset voltage VOS -10 10 mV VS=5V to 32V, TA=-40C to +125C 8
Input Bias Current IB 100 nA TA=-40C to +125C 8
Input Offset Current IOS 100 nA TA=-40C to +125C 8
Large signal differential voltage amplification AVD 50 200 V/mV VS=15V, Vo=1.4V to 11.4V, RL≥15k to (V+) 8
Low-Level output voltage VOL 300 360 mV Isink≤4mA, VID=-1V 8
Output Current (sinking) IOL 15 mA VO=1.5V; VID=-1V; VS=5V 8
High-Level Output Leakage Current ILEAK 2 20 nA (V+)=Vo=5V; VID=1V 8
High-Level Output Leakage Current ILEAK 4 50 nA (V+)=Vo=32V; VID=1V 8
Input Bias Current IB 10 50 pA TA=25C 8
Input Offset Current IOS 10 50 pA TA=25C 8
Propagation Delay H To L TPHL 0.5 us VS=5V; RPU=5.1KΩ; Overdrive=10mV 8
Propagation Delay H To L TPHL 0.3 us VS=5V; RPU=5.1KΩ; Overdrive=100mV 8
Propagation Delay H To L TPHL 0.64 us VS=32V; RPU=5.1KΩ; Overdrive=10mV 8
Propagation Delay L To H TPLH 1.5 us VS=5V; RPU=5.1KΩ; Overdrive=10mV 8
Propagation Delay L To H TPLH 0.3 us VS=5V; RPU=5.1KΩ; Overdrive=100mV 8
Propagation Delay L To H TPLH 0.25 us VS=32V; RPU=5.1KΩ; Overdrive=100mV 8
Junction-to-ambient thermal resistance RϴJA 273.8 °C/W 7
Junction-to-case(top) thermal resistance RϴJC(top) 126.8 °C/W 7
Junction-to-board thermal resistance RϴJB 85.9 °C/W 7
Junction-to-top characterization parameter ΨJT 10.9 °C/W 7
Junction-to-board characterization parameter ΨJB 84.9 °C/W 7

CAD (KiCad official)

  • Symbol: LM331BXF
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT23-5 (KiCad packages3D, STEP)
  • 3D model files: lm331bxf-etched.step / lm331bxf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm331bxf.step / lm331bxf.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Jiangsu RUNIC Tech datasheet (14 pp, sha256 dafdb8706402c1c5, retrieved 2026-10-18, tier: lcsc)
  • 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