component

FS432M

Public Made by Adom

by adom

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

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Generated by kicad-footprint-generator · KiCad file format 20260206
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FS432M

FOSAN · Voltage Reference · SOT-23

FS432M 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 pin (R) that sets the output voltage via the R1/R2 divider, with VREF of 1.240 V typ and absolute max reference input current of 3 mA.
2 CATHODE passive Cathode (K) of the shunt regulator, rated for up to 20 V cathode-to-anode voltage and 100 mA cathode current.
3 ANODE power_in Anode (A) of the shunt regulator, normally connected to ground as the lowest-potential reference.

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
Cathode to Anode Voltage VKA 20 V 1
Cathode Current Range IK 100 mA 1
Reference Input Current Range IREF 3 mA 1
Power dissipation PD 200 mW 1
Thermal Resistance Junction-Ambient RΘJA 625 ℃/W 1
Solder Temperature/time Td 260 ℃/S 10 s 1
Operating Ambient Temperature Top 0 70 ℃ 1
Junction and Storage Temperature TJ,Tstg -40 125 ℃ 1
Reference Input Voltage (0.5% grade) VREF 1.234 1.24 1.247 V VKA=VREF IKA=10mA Ta=25℃; 0.5% grade 2
Reference Input Voltage (1% grade) VREF 1.228 1.24 1.252 V VKA=VREF IKA=10mA Ta=25℃; 1% grade 2
Deviation of reference Input Voltage Over temperature ΔVREF/ΔT 10 25 mV VKA=VREF IKA=10mA 0 ~ 70℃ 2
Ratio of Change in Reference Input Voltage to Change in Cathode Voltage ΔVREF/ΔVKA -1 -2.7 mV/V IKA=10mA ΔVKA=18V~VREF 2
Reference Input Current IREF 0.25 0.5 µA IKA=10mA R1=10kΩ,R2=∞ 2
Deviation of Reference Input Current Over Full Temperature Range ΔIREF/ΔT 0.05 0.3 µA IKA=10mA R1=10kΩ,R2=∞ TA=0~70℃ 2
Minimum Cathode Current for Regulation IKA(MIN) 60 80 mA VKA=VREF 2
Off-state Cathode Current IKA(OFF) 0.04 0.5 µA VKA=18V VREF=0V 2
Dynamic Impedance ZKA 0.2 0.4 Ω VKA=VREF IKA=1 ~ 100mA f≤1kHz 2

CAD (KiCad official)

  • Symbol: FS432M
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: fs432m-etched.step / fs432m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fs432m.step / fs432m.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: FOSAN datasheet (3 pp, sha256 b15dc1ebb377ef62, retrieved 2026-10-18, 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