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LM4040CELT-3.0

Public Made by Adom

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STMicroelectronics Voltage Reference, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM4040CELT-3.0

STMicroelectronics · Voltage Reference · SOT-23-3L

LM4040CELT-3.0 from STMicroelectronics, in a SOT-23-3L. 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 K passive Cathode of the shunt reference, where the 3.0 V reverse breakdown voltage is set with Ik of 12 µA minimum and 15 mA maximum operating current.
2 A passive Anode of the shunt reference, the common return terminal.
3 NC unconnected No connect pin that must be left unconnected or connected to the anode.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-23-3L
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
Reverse breakdown voltage (Vk = 3.0 V), LM4040C Vk 2.985 3 3.015 V Ik = 12 µA, LM4040C 4
Precision at 25 °C (LM4040C, 0.5%) -0.5 0.5 % Tamb = 25 °C 1
Average temperature coefficient ΔVk/ΔT 20 70 ppm/°C 10 µA < Ik < 20 mA 4
Reverse breakdown voltage change with operating current range ΔVk/ΔIk 0.2 1 mV Ik min < Ik < 1 mA, -40°C < Tamb < +125°C 4
Reverse breakdown voltage change with operating current range ΔVk/ΔIk 1.7 4 mV 1 mA < Ik < 15 mA, -40°C < Tamb < +125°C 4
Static impedance Rka 0.15 0.3 Ω ΔIk = 10 µA to 10 mA 4
Reverse breakdown current Ik 20 mA 3
Forward current If 15 mA 3
Power dissipation Pd 500 mW Tamb = 25 °C, Tjmax = 150 °C (footnote 1) 3
Storage temperature Tstd -65 150 °C 3
ESD Human Body Model (HBM) 2 kV 3
ESD Machine Model (MM) 200 V 3
ESD Charged device model 1500 V 3
Lead temperature (soldering) Tlead 260 °C 10 sec. 3
Max. junction temperature Tj 150 °C 3
Minimum operating current Ikmin 10 µA 3
Maximum operating current Ikmax 15 mA 3
Operating free air temperature range Toper -40 125 °C 3
Thermal resistance junction ambient RthJA 210 °C/W SOT23-3L 3
Thermal resistance junction-case RthJC 103 °C/W SOT23-3L 3

CAD (KiCad official)

  • Symbol: LM4040CELT-3.0
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: lm4040celt-3-0-etched.step / lm4040celt-3-0-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040celt-3-0.step / lm4040celt-3-0.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (23 pp, sha256 f92699ed8c875e79, retrieved 2026-10-11, 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