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LM4040C25QFTA

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

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LM4040C25QFTA

Diodes Incorporated · Voltage Reference · SOT-23

LM4040C25QFTA 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 (reverse breakdown voltage 2.5V nominal, operating reverse current 60µA to 15mA, 20mA absolute maximum continuous).
2 Anode passive Anode of the shunt reference, the reference for all specified voltages; it is electrically connected to pin 3 through the die attach.
3 NC unconnected Die-attach pin that must be left floating or connected to pin 2 (Anode).

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, IR = 100µA, +25°C (C limit) VREF -12 12 mV IR = 100µA, +25°C 2
Reverse Breakdown Voltage Tolerance, IR = 100µA, -40 to +85°C (C limit) VREF -29 29 mV IR = 100µA, -40 to +85°C 2
Reverse Breakdown Voltage Tolerance, IR = 100µA, -40 to +125°C (C limit) VREF -38 38 mV IR = 100µA, -40 to +125°C 2
Minimum Operating Current, +25°C (C limit) IRMIN 60 µA +25°C 2
Minimum Operating Current, -40 to +85°C (C limit) IRMIN 65 µA -40 to +85°C 2
Minimum Operating Current, -40 to +125°C (C limit) IRMIN 68 µA -40 to +125°C 2
Average Reverse Breakdown Voltage Temperature Coefficient (C limit) ΔVR/ΔT -100 100 ppm/°C IR = 1mA, -40 to +125°C 2
Reverse Breakdown Change with Current, IRMIN ≤ IR ≤ 1mA, +25°C (C limit) ΔVR/ΔIR 0.8 mV IRMIN ≤ IR ≤ 1mA, +25°C 2
Reverse Breakdown Change with Current, IRMIN ≤ IR ≤ 1mA, -40 to +85°C (C limit) ΔVR/ΔIR 1 mV IRMIN ≤ IR ≤ 1mA, -40 to +85°C 2
Reverse Breakdown Change with Current, IRMIN ≤ IR ≤ 1mA, -40 to +125°C (C limit) ΔVR/ΔIR 1 mV IRMIN ≤ IR ≤ 1mA, -40 to +125°C 2
Reverse Breakdown Change with Current, 1mA ≤ IR ≤ 15mA, +25°C (C limit) ΔVR/ΔIR 6 mV 1mA ≤ IR ≤ 15mA, +25°C 2
Reverse Breakdown Change with Current, 1mA ≤ IR ≤ 15mA, -40 to +85°C (C limit) ΔVR/ΔIR 8 mV 1mA ≤ IR ≤ 15mA, -40 to +85°C 2
Reverse Breakdown Change with Current, 1mA ≤ IR ≤ 15mA, -40 to +125°C (C limit) ΔVR/ΔIR 8 mV 1mA ≤ IR ≤ 15mA, -40 to +125°C 2
Dynamic Output Impedance (C limit) ZR 0.9 Ω IR = 1mA, f = 120Hz, IAC = 0.1IR 2
Reverse Current (recommended operating) 0.06 15 mA 2
Operating Ambient Temperature Range -40 125 °C 2
Continuous Reverse Current 20 mA Voltages to Anode unless otherwise stated 2
Continuous Forward Current 10 mA 2
Operating Junction Temperature TJ -40 150 °C 2
Storage Temperature TSTG -55 150 °C 2
Thermal Resistance Junction-to-Ambient, SOT23 (θJA) θJA 380 °C/W TA = +25°C, TJ = +125°C 2
Power Dissipation, SOT23 (PDIS) PDIS 330 mW TA = +25°C, TJ = +125°C 2

CAD (KiCad official)

  • Symbol: LM4040C25QFTA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lm4040c25qfta-etched.step / lm4040c25qfta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040c25qfta.step / lm4040c25qfta.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 2026-10-18, 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