component
LM4040CYM3-5.0-TR
Public Made by Adomby adom
Microchip Tech Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM4040CYM3-5.0-TR
Microchip Tech · Voltage Reference · SOT-23
LM4040CYM3-5.0-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: connect to positive voltage; LM4040 versions have a maximum operating current of 15 mA. |
| 2 | - | power_in | Anode: connect to negative voltage; on the LM4040-x.x the parasitic Schottky diode sits between this pin and Pin 3, so Pin 3 must float or be connected to Pin 2. |
| 3 | NC | unconnected | Not internally connected; this pin must be left floating or connected to the (-) pin (Pin 2). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| 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 (C-grade, IR = 100 µA, TA = +25°C) | VR | -25 | 25 | mV | IR = 100 µA, TA = +25°C | 8 | |
| Reverse-Breakdown Voltage Tolerance (C-grade, overtemperature, IR = 100 µA) | VR | -58 | 58 | mV | IR = 100 µA | 8 | |
| Accuracy (C-grade ordering code, ±0.5%) | -0.5 | 0.5 | % | 27 | |||
| Minimum Operating Current | IRMIN | 54 | 74 | µA | TA = +25°C | 8 | |
| Minimum Operating Current (overtemperature) | IRMIN | 80 | µA | 8 | |||
| Average Reverse-Breakdown Voltage Temperature Coefficient | ∆VR/∆T | -100 | 20 | 100 | ppm/°C | IR = 1 mA | 8 |
| Reverse-Breakdown Voltage Change with Operating Current Change | ∆VR/∆IR | 0.5 | 1 | mV | IRMIN ≤ IR ≤ 1 mA, TA = +25°C | 8 | |
| Reverse-Breakdown Voltage Change with Operating Current Change (overtemperature) | ∆VR/∆IR | 1.4 | mV | IRMIN ≤ IR ≤ 1 mA | 8 | ||
| Reverse-Breakdown Voltage Change with Operating Current Change | ∆VR/∆IR | 3.5 | 8 | mV | 1 mA ≤ IR ≤ 15 mA, TA = +25°C | 8 | |
| Reverse-Breakdown Voltage Change with Operating Current Change (overtemperature) | ∆VR/∆IR | 12 | mV | 1 mA ≤ IR ≤ 15 mA | 8 | ||
| Reverse Dynamic Impedance | ZR | 0.5 | 1.1 | Ω | IR = 1 mA, f = 120 Hz, IAC = 0.1 IR, TA = +25°C | 8 | |
| Reverse-Breakdown Voltage (nominal) | VR | 5 | V | IR = 100 µA, TA = +25°C | 8 | ||
| Reverse Current (LM4040-5.0) operating range upper limit | IR | 15 | mA | 3 | |||
| Operating Temperature Range | TA | -40 | 85 | °C | 15 | ||
| Reverse Current | IR | 20 | mA | 3 | |||
| Forward Current | IF | 10 | mA | 3 | |||
| ESD Susceptibility (HBM) | 2 | kV | HBM; Note 2 | 3 | |||
| ESD Susceptibility (MM) | 200 | V | MM; Note 2 | 3 | |||
| Storage Temperature | TS | -65 | 150 | °C | 15 | ||
| Lead Temperature (vapor phase) | 215 | °C | Vapor phase, 60 s | 15 | |||
| Lead Temperature (infrared) | 220 | °C | Infrared, 15 s | 15 | |||
| Maximum Junction Temperature | TJMAX | 125 | °C | 3 | |||
| Package Thermal Resistance, junction-to-ambient (3-Pin SOT-23, board-mounted) | ΘJA | 326 | °C/W | 15 |
CAD (KiCad official)
- Symbol:
LM4040CYM3-5.0-TR - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
lm4040cym3-5-0-tr-etched.step/lm4040cym3-5-0-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4040cym3-5-0-tr.step/lm4040cym3-5-0-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (30 pp, sha256
a1a806c6cb906720, retrieved 2026-10-20, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).