component
ME431BXG
Public Made by Adomby adom
MICRONE Voltage References, 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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Contents
README
markdownME431BXG
MICRONE · Voltage References · SOT-23
ME431BXG from MICRONE, 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 | REF | input | Reference input that sets the cathode voltage through an external divider, with VREF of 2.5V (2.490V to 2.510V for the 0.4% grade) and a maximum input current of 10mA. |
| 2 | CATHODE | passive | Cathode (shunt current sink) terminal, rated at 40V maximum with a recommended 1mA to 100mA cathode current and an operating VKA from VREF to 36V. |
| 3 | ANODE | power_in | Anode terminal, which connects to ground in the shunt regulator circuits. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MICRONE |
| 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 |
|---|---|---|---|---|---|---|---|
| Cathode voltage | VKA | 40 | V | 2 | |||
| Cathode current (continuous) | IKA | -100 | 130 | mA | continuous | 2 | |
| Reference input current | IREF | 10 | mA | 2 | |||
| Junction temperature | TJ | 160 | ℃ | 2 | |||
| Storage temperature range | TSTG | -65 | 150 | ℃ | 2 | ||
| Cathode voltage | VKA | 36 | V | min is VREF | 3 | ||
| Cathode current | IKA | 1 | 100 | mA | 3 | ||
| Operating ambient temperature range | TA | -40 | 125 | ℃ | 3 | ||
| Deviation of reference voltage over temperature | ΔVREF | 3 | 10 | mV | VKA=VREF, IKA=10mA, 0 to 70℃ | 3 | |
| Deviation of reference voltage over temperature | ΔVREF | 3 | 15 | mV | VKA=VREF, IKA=10mA, -40 to 150℃ | 3 | |
| Dynamic impedance | /ZKA/ | 0.15 | 0.5 | Ω | VKA=VREF, IKA=1 to 100mA, f≤1.0KHz | 3 | |
| Minimum cathode current for regulation | IKA(MIN) | 0.4 | 1 | mA | VKA=VREF | 3 | |
| Ratio of change in reference voltage to change in cathode voltage | ΔVREF/ΔVKA | -0.8 | -2.5 | mV/V | IKA=10mA, ΔVKA=10V to VREF | 3 | |
| Ratio of change in reference voltage to change in cathode voltage | ΔVREF/ΔVKA | -0.6 | -1.5 | mV/V | IKA=10mA, ΔVKA=36V to 10V | 3 | |
| Reference current | IREF | 0.7 | 3 | μA | IKA=10mA, R1=10KΩ, R2=∝ | 3 | |
| Deviation of reference current over full temperature range | ΔIREF | 0.1 | 1.2 | μA | IKA=10mA, R1=10KΩ, R2=∝, TA=40 to 150℃ | 3 | |
| Off-state cathode current | IKA(OFF) | 0.03 | 0.3 | μA | VKA=36V, VREF=0 | 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 |
|---|---|---|---|---|
| housing | ppa | body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Nanjing Micro | 12 |
CAD (KiCad official)
- Symbol:
ME431BXG - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
me431bxg-etched.step/me431bxg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);me431bxg.step/me431bxg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MICRONE datasheet (12 pp, sha256
8eb0b1763d99798b, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).