component
NCP431BVSNT1G
Public Made by Adomby adom
onsemi 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
markdownNCP431BVSNT1G
onsemi · Voltage Reference · SOT-23
NCP431BVSNT1G from onsemi, 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 of the programmable shunt regulator, where the internal 2.5 V reference is compared; reference input current is 81 nA typical and 190 nA maximum (IK = 1 mA, R1 = 220 kΩ). |
| 2 | K | passive | Cathode of the shunt regulator, with continuous cathode current range of −100 mA to +150 mA and cathode-to-anode voltage of 37 V maximum (36 V recommended). |
| 3 | A | passive | Anode of the shunt regulator, which sets the cathode-to-anode reference; minimum cathode current for regulation is 40 µA typical and 60 µA maximum at VKA = Vref. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| 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 |
|---|---|---|---|---|---|---|---|
| Reference Input Voltage (TA = 25°C) | Vref | 2.4875 | 2.5 | 2.5125 | V | VKA = Vref, IK = 1 mA, TA = 25°C | 4 |
| Reference Input Voltage (TA = Tlow to Thigh) | Vref | 2.4725 | 2.5 | 2.5125 | V | VKA = Vref, IK = 1 mA, TA = Tlow to Thigh (Note 7; Tlow −40°C, Thigh 125°C) | 4 |
| Reference Input Voltage Deviation Over Temperature Range | VrefT | 15 | mV | VKA = Vref, IK = 1 mA | 4 | ||
| Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (10 V to Vref) | Vref/VKA | -1.85 | -3.1 | mV/V | IK = 1 mA, VKA = 10 V to Vref | 4 | |
| Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (36 V to 10 V) | Vref/VKA | -0.8 | -1.8 | mV/V | IK = 1 mA, VKA = 36 V to 10 V | 4 | |
| Reference Input Current | Iref | 81 | 190 | nA | IK = 1 mA, R1 = 220 k, TA = −40°C to +125°C | 4 | |
| Reference Input Current Deviation Over Temperature Range | IrefT | 22 | 55 | nA | IK = 1 mA, R1 = 10 k | 4 | |
| Minimum Cathode Current For Regulation | Imin | 40 | 60 | µA | VKA = Vref | 4 | |
| Off-State Cathode Current | Ioff | 180 | 1000 | nA | VKA = 36 V, Vref = 0 V | 4 | |
| Dynamic Impedance | /ZKA/ | 0.22 | 0.5 | Ω | VKA = Vref, IK = 1.0 mA to 100 mA, f < 1.0 kHz | 4 | |
| Cathode to Anode Voltage (recommended) | VKA | 36 | V | Vref | 2 | ||
| Cathode Current (recommended) | IK | 0.04 | 100 | mA | 2 | ||
| Cathode to Anode Voltage | VKA | 37 | V | 2 | |||
| Cathode Current Range, Continuous | IK | -100 | 150 | mA | Continuous | 2 | |
| Reference Input Current Range, Continuous | Iref | -5 | 10 | mA | Continuous | 2 | |
| Operating Junction Temperature | TJ | 150 | °C | 2 | |||
| Operating Ambient Temperature Range | TA | -40 | 125 | °C | 2 | ||
| Storage Temperature Range | Tstg | -65 | 150 | °C | 2 | ||
| Total Power Dissipation | PD | 0.52 | W | TA = 25°C, SN1 suffix plastic package; derate above 25°C | 2 | ||
| ESD Rating, Human Body Model | HBM | 2000 | V | JESD22-A114F; printed as >2000 | 2 | ||
| ESD Rating, Charged Device Model | CDM | 1000 | V | JESD22-C101E; printed as >1000 | 2 | ||
| Thermal Resistance, Junction-to-Ambient | RJA | 255 | °C/W | SN suffix package (10 mm² x 35 µm Cu) | 2 | ||
| Thermal Resistance, Junction-to-Lead (Lead 3) | RJL | 80 | °C/W | SN suffix package (10 mm² x 35 µm Cu) | 2 |
CAD (KiCad official)
- Symbol:
NCP431BVSNT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ncp431bvsnt1g-etched.step/ncp431bvsnt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ncp431bvsnt1g.step/ncp431bvsnt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (17 pp, sha256
eebf6db420b91340, retrieved 2026-10-17, 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).