component
CBM431Z23
Public Made by Adomby adom
Corebai Microelectronics Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 9d ago |
| viewers | 9d ago |
| cbm431z23-etched.glb | 9d ago |
| cbm431z23-etched.step | 9d ago |
| cbm431z23-hero.glb | 9d ago |
| cbm431z23-hero.overlay.json | 9d ago |
| cbm431z23.glb | 9d ago |
| cbm431z23.kicad_mod | 9d ago |
| cbm431z23.kicad_sym | 9d ago |
| cbm431z23.lbr | 9d ago |
| cbm431z23.step | 9d ago |
| package.json | 9d ago |
| page.json | 9d ago |
| README.md | 9d ago |
CBM431Z23
Corebai Microelectronics · Voltage Reference · SOT-23-3
CBM431Z23 from Corebai Microelectronics, in a SOT-23-3. 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 | REFERENCE | input | Reference voltage input pin; the internal reference is about 2.5 V (VREF 2.440 V to 2.550 V for the 2% CBM431Z), and the output is set by external resistors between cathode, reference and anode. |
| 2 | ANODE | output | Anode pin, classified as output in the datasheet table; the cathode-to-anode voltage is specified over 0.01 V to 40 V. |
| 3 | CATHODE | bidirectional | Cathode pin, classified as input/output in the datasheet; it sinks current from 0.1 mA to 100 mA and the cathode-to-anode voltage is rated up to 40 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | SOT-23-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| 阴极-阳极电压 (Cathode-anode voltage) | VKA | 0.01 | 40 | V | 6 | ||
| 阴极电流 (Cathode current) | IK | 0.5 | 100 | mA | 6 | ||
| 基准输入电压 (Reference input voltage, CBM431Z 2%) | VREF | 2.44 | 2.495 | 2.55 | V | VKA = VREF, IK = 10mA | 6 |
| 过满载温度范围基准输入电压偏差 (Reference voltage deviation over temperature range) | VREF(dev) | 3 | 17 | MV | Tmin ≤ Ta ≤ Tmax | 6 | |
| 基准输入电压变化与阴极电压变化比 (Reference voltage change with cathode voltage, ΔVKA = 10V-VREF) | ∆VREF/∆VKA | -1.4 | -2.7 | mV/V | ∆VKA = 10V-VREF | 6 | |
| 基准输入电压变化与阴极电压变化比 (Reference voltage change with cathode voltage, ΔVKA = 36V-10V) | ∆VREF/∆VKA | -1 | -2 | mV/V | ∆VKA = 36V- 10V | 6 | |
| 基准输入电流 (Reference input current) | IREF | 1.8 | 4 | μA | R1 = 10KΩ, R2 = ∞ | 6 | |
| 过满载温度范围基准输入电流偏差 (Reference input current deviation over temperature range) | IREF(dev) | 0.4 | 1.2 | μA | R1 = 10KΩ, R2 = ∞ | 6 | |
| 调节器最小阴极电流 (Minimum cathode current for regulation) | IK(min) | 0.25 | 0.5 | mA | 6 | ||
| 关闭状态阴极电流 (Off-state cathode current) | IK(off) | 0.17 | 0.9 | μA | VKA = 40 V, VREF = 0 | 6 | |
| 动态阻抗 (Dynamic impedance) | ZKA | 0.27 | 0.5 | Ω | IK = 10mA 至 100 mA, f ≤ 1.0KHz | 6 |
CAD (KiCad official)
- Symbol:
CBM431Z23 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
cbm431z23-etched.step/cbm431z23-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cbm431z23.step/cbm431z23.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Corebai Microelectronics datasheet (19 pp, sha256
15a0ad8a12bea410, retrieved 2026-10-19, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).