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LM4040CYM3-2.5-TR

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Microchip Tech Voltage References, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM4040CYM3-2.5-TR

Microchip Tech · Voltage References · SOT-23

LM4040CYM3-2.5-TR from Microchip Tech, 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 + passive Cathode of the shunt reference; connect to positive voltage.
2 - passive Anode of the shunt reference; connect to negative voltage (GND).
3 NC unconnected Not internally connected; this pin must be left floating or connected to pin 2 (-) because of the parasitic Schottky diode to the die attach.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-23
Category Power Management ICs
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 -12 12 mV IR = 100 µA, TA = +25°C 4
Reverse-Breakdown Voltage Tolerance (over temperature) -29 29 mV IR = 100 µA 4
Minimum Operating Current IRMIN 45 60 µA TA = +25°C 4
Minimum Operating Current (over temperature) IRMIN 65 µA 4
Average Reverse-Breakdown Voltage Temperature Coefficient ∆VR/∆T -100 15 100 ppm/°C IR = 1 mA 4
Reverse-Breakdown Voltage Change with Operating Current Change ∆VR/∆IR 0.3 0.8 mV IRMIN ≤ IR ≤ 1 mA, TA = +25°C 4
Reverse-Breakdown Voltage Change with Operating Current Change ∆VR/∆IR 1 mV IRMIN ≤ IR ≤ 1 mA 4
Reverse-Breakdown Voltage Change with Operating Current Change ∆VR/∆IR 2.5 6 mV 1 mA ≤ IR ≤ 15 mA, TA = +25°C 4
Reverse-Breakdown Voltage Change with Operating Current Change ∆VR/∆IR 8 mV 1 mA ≤ IR ≤ 15 mA 4
Reverse Dynamic Impedance ZR 0.3 0.9 Ω IR = 1 mA, f = 120 Hz, IAC = 0.1 IR, TA = +25°C 4
Operating Temperature Range TA -40 85 °C 15
Storage Temperature TS -65 150 °C 15
Reverse Current (operating) 60 15 LM4040-2.5, 60 µA to 15 mA 3
Reverse Current 20 mA 3
Forward Current 10 mA 3
ESD Susceptibility (HBM) 2 kV Note 2 3
ESD Susceptibility (MM) 200 V Note 2 3
Lead Temperature 215 °C Vapor phase, 60s 15
Lead Temperature 220 °C Infrared, 15s 15
Package Thermal Resistance 3-Pin SOT-23 ΘJA 326 °C/W 15
Reverse-Breakdown Voltage VR 2.5 V IR = 100 µA, TA = +25°C 4
Wideband Noise eN 35 µVRMS IR = 100 µA, TA = +25°C, 10 Hz ≤ f ≤ 10 kHz 4
Reverse-Breakdown Voltage Long-Term Stability ∆VR 120 ppm t = 1000 hrs., TA = +25°C ±0.1°C, IR = 100 µA 4
Average Reverse-Breakdown Voltage Temperature Coefficient ∆VR/∆T 20 ppm/°C IR = 10 mA, TA = +25°C (printed ±20) 4

CAD (KiCad official)

  • Symbol: LM4040CYM3-2.5-TR
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lm4040cym3-2-5-tr-etched.step / lm4040cym3-2-5-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040cym3-2-5-tr.step / lm4040cym3-2-5-tr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (30 pp, sha256 a1a806c6cb906720, retrieved 2026-10-26, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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