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LM4040D25FTA

Public Made by Adom

by adom

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

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Contents

README

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LM4040D25FTA

Diodes Incorporated · Voltage Reference · SOT-23

LM4040D25FTA 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 -25 version) appears relative to the Anode, with operating reverse current of 60µA to 15mA.
2 Anode passive Anode of the shunt reference and the voltage reference point for all specified voltages; pin 3 may be connected to this pin.
3 NC unconnected Pin 3 must be left floating or connected to pin 2 (Anode), since the die is attached to pin 3 giving electrical contact between pins 2 and 3.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
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 Tolerance (+25°C) VREF -25 5 25 mV IR = 100µA, +25°C 2
Reverse Breakdown Voltage Tolerance (-40 to +85°C) VREF -49 21 49 mV IR = 100µA, -40 to +85°C 2
Reverse Breakdown Voltage Tolerance (-40 to +125°C) VREF -63 30 63 mV IR = 100µA, -40 to +125°C 2
Minimum Operating Current (+25°C) IRMIN 45 65 µA +25°C 2
Minimum Operating Current (-40 to +85°C) IRMIN 70 µA -40 to +85°C 2
Minimum Operating Current (-40 to +125°C) IRMIN 73 µA -40 to +125°C 2
Average Reverse Breakdown Voltage Temperature Coefficient ΔVR/ΔT -150 15 150 ppm/°C IR = 1mA 2
Reverse Breakdown Change with Current (IRMIN ≤ IR ≤ 1mA, +25°C) ΔVR/ΔIR 0.3 1 mV IRMIN ≤ IR ≤ 1mA, +25°C 2
Reverse Breakdown Change with Current (IRMIN ≤ IR ≤ 1mA, -40 to +85°C) ΔVR/ΔIR 1.2 mV IRMIN ≤ IR ≤ 1mA, -40 to +85°C 2
Reverse Breakdown Change with Current (IRMIN ≤ IR ≤ 1mA, -40 to +125°C) ΔVR/ΔIR 1.2 mV IRMIN ≤ IR ≤ 1mA, -40 to +125°C 2
Reverse Breakdown Change with Current (1mA ≤ IR ≤ 15mA, +25°C) ΔVR/ΔIR 2.5 8 mV 1mA ≤ IR ≤ 15mA, +25°C 2
Reverse Breakdown Change with Current (1mA ≤ IR ≤ 15mA, -40 to +85°C) ΔVR/ΔIR 10 mV 1mA ≤ IR ≤ 15mA, -40 to +85°C 2
Reverse Breakdown Change with Current (1mA ≤ IR ≤ 15mA, -40 to +125°C) ΔVR/ΔIR 10 mV 1mA ≤ IR ≤ 15mA, -40 to +125°C 2
Dynamic Output Impedance ZR 0.3 1.1 Ω IR = 1mA, f = 120Hz, IAC = 0.1IR 2
Reverse Current (recommended) 0.06 15 mA 2
Operating Ambient Temperature Range (recommended) -40 125 °C 2
Continuous Reverse Current 20 mA 2
Continuous Forward Current 10 mA 2
Operating Junction Temperature -40 150 °C 2
Storage Temperature -55 150 °C 2
Thermal Resistance Junction-to-Ambient θJA 380 °C/W SOT23 2
Power Dissipation PDIS 330 mW TA = +25°C, TJ = +125°C 2

CAD (KiCad official)

  • Symbol: LM4040D25FTA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lm4040d25fta-etched.step / lm4040d25fta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040d25fta.step / lm4040d25fta.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (16 pp, sha256 273ea3e61e9ec2d9, retrieved 2026-10-09, 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