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TL431M-0.5%-6AF

Public Made by Adom

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FOSAN Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TL431M-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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431m-0-5-6af.step / tl431m-0-5-6af.glb are 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, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF