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TL431M-0.5%-6AF
Public Made by Adomby adom
FOSAN 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
markdownTL431M-0.5%-6AF
FOSAN · Voltage Reference · SOT-23
TL431M-0.5%-6AF from FOSAN, 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 terminal that sets the output voltage through an external divider, with a typical reference voltage of 2.495V and an input current range of -0.05 to +10mA. |
| 2 | CATHODE | passive | Cathode terminal that sinks 1 to 100mA, with a maximum cathode-to-anode voltage of 40V and a programmable output voltage up to 36V. |
| 3 | ANODE | power_in | Anode terminal, connected to ground in the shunt regulator circuit. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FOSAN |
| 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 | 2.483 | 2.495 | 2.507 | V | VKA=VREF, IKA=10mA, Ta=25℃ | 2 |
| Deviation of Reference Input Voltage Over temperature | ΔVREF/ΔT | 3 | 17 | mV | VKA=VREF, IKA=10mA, -20 ~ +85℃ | 2 | |
| Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (ΔVKA=10V~VREF) | ΔVREF/ΔVKA | -0.4 | 0 | 2.7 | mV/V | IKA=10mA, ΔVKA=10V~VREF | 2 |
| Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (ΔVKA=36V~10V) | ΔVREF/ΔVKA | -0.4 | 0 | 2 | mV/V | IKA=10mA, ΔVKA=36V~10V | 2 |
| Reference Input Current | IREF | 1.8 | 4 | µA | IKA=10mA, R1=10kΩ, R2=∞ | 2 | |
| Deviation of Reference Input Current Over Full Temperature Range | ΔIREF/ΔT | 0.4 | 1.2 | µA | IKA=10mA, R1=10kΩ, R2=∞, TA=-20 ~ +85℃ | 2 | |
| Minimum Cathode Current for Regulation | IKA(MIN) | 0.25 | 0.5 | mA | VKA=VREF | 2 | |
| Off-state Cathode Current | IKA(OFF) | 0.17 | 1 | µA | VKA=40V, VREF=0V | 2 | |
| Dynamic Impedance | ZKA | 0.27 | 0.5 | Ω | VKA=VREF, IKA=1 ~ 100mA, f≤1kHz | 2 | |
| Cathode to Anode Voltage | VKA | 40 | V | 1 | |||
| Cathode Current Range | IK | -100 | 150 | mA | 1 | ||
| Reference Input Current Range | IREF | -0.05 | 10 | mA | 1 | ||
| Power dissipation | PD | 200 | mW | 1 | |||
| Thermal Resistance Junction-Ambient | RΘJA | 625 | ℃/W | 1 | |||
| Solder Temperature | Td | 260 | ℃ | 10 s | 1 | ||
| Operating Ambient Temperature | Top | -25 | 85 | ℃ | 1 | ||
| Junction and Storage Temperature | TJ,Tstg | -40 | 125 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
TL431M-0.5%-6AF - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
tl431m-0-5-6af-etched.step/tl431m-0-5-6af-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl431m-0-5-6af.step/tl431m-0-5-6af.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FOSAN datasheet (4 pp, sha256
3d2506a8eb2de8c2, retrieved 2026-10-21, 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-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).