component
S-LR431AKLT1G
Public Made by Adomby adom
LRC 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
markdownS-LR431AKLT1G
LRC · Voltage Reference · SOT-23
S-LR431AKLT1G from LRC, 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 the regulator servos to the internal 2.5 V (approximately Vref) through an external resistor divider, with reference input current rated -0.05 to +10 mA in the absolute maximum ratings. |
| 2 | Cathode | passive | Cathode (output) terminal, adjustable from Vref up to 36 V with two external resistors, with a sink current capability of 0.1 mA to 100 mA and continuous cathode current rated -100 to +150 mA. |
| 3 | Anode | passive | Anode terminal, the common return of the shunt path, which the datasheet identifies only by its function in the block diagram and pinout. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| 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 (0.5% grade) | Vref | 2.488 | 2.5 | 2.512 | V | VKA=VREF, IKA=10mA | 2 |
| Deviation of reference input voltage over temperature | Vref | 8 | 17 | mV | VKA=VREF, IKA=10mA, TA=TMIN to TMAX | 2 | |
| Dynamic Impedance | ZKA | 0.1 | 0.37 | Ω | VKA=VREF, IKA=0.2 to 100mA, f 1.0kHz | 2 | |
| Cathode Current Range (Continuous) | IKA | -100 | 150 | mA | 2 | ||
| Reference Input Current Range | Iref | -0.05 | 10 | mA | 2 | ||
| Operating Junction Temperature | Tj | 150 | °C | 2 | |||
| Storage Temperature | Tstg | -65 | 150 | °C | 2 | ||
| Operating Ambient Temperature (grade range) | Topr | -40 | 125 | °C | 2 | ||
| Cathode Current | IKA | 100 | mA | 2 | |||
| Thermal Resistance Junction-to-Ambient | θJA | 206 | °C/W | 2 |
CAD (KiCad official)
- Symbol:
S-LR431AKLT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
s-lr431aklt1g-etched.step/s-lr431aklt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);s-lr431aklt1g.step/s-lr431aklt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (5 pp, sha256
386e1e16926acbb8, 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).