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LM4040B25QFTA

Public Made by Adom

by adom

Diodes Incorporated Voltage Reference, SOT-23. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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LM4040B25QFTA

Diodes Incorporated · Voltage Reference · SOT-23

LM4040B25QFTA from Diodes Incorporated, in a SOT-23. 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 Cathode passive Cathode of the shunt reference, where the reverse breakdown voltage VREF (2.5V for the LM4040-25Q) is developed, operating over 60µA to 15mA reverse current.
2 Anode passive Anode of the shunt reference and the voltage reference point for the specified voltages; it is electrically contacted to pin 3.
3 NC/Anode passive Die-attach pin that is electrically connected to pin 2 and must be left floating or connected to pin 2.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Power Management (PMIC)
Pins 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin  Terminals: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208  Weight: 0.009 grams (Approximate) 14

CAD (KiCad official)

  • Symbol: LM4040B25QFTA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lm4040b25qfta-etched.step / lm4040b25qfta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040b25qfta.step / lm4040b25qfta.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (15 pp, sha256 f8b26a9cc3c3a4b4, retrieved 2026-10-22, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF