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TL431-A

Public Made by Adom

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Foshan Blue Rocket Elec Voltage References, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icstl431-afactory-2.0.0extractor-text

Verified TL431-A

by Ray · last 8 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

8 Nov 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: TL431-A · TO-92-3 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 7-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-92_Inline
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-hm2vz1n9/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ tl431-a.kicad_sym✓ tl431-a.kicad_mod✓ tl431-a.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 23h ago
viewers tl431-a: viewers · Ray 23h ago
package.json Publish 0.1.0 · Ray 23h ago
page.json Set visibility: public · Ray 23h ago
README.md Publish 0.1.0 · Ray 23h ago
tl431-a-etched.glb Publish 0.1.0 · Ray 23h ago
tl431-a-etched.step tl431-a: factory component page (tier=lcsc) · Ray 23h ago
tl431-a-hero.glb tl431-a: hero GLB from the etched model (keeps the MPN mark) · Ray 23h ago
tl431-a-hero.overlay.json Publish 0.1.0 · Ray 23h ago
tl431-a.glb Publish 0.1.0 · Ray 23h ago
tl431-a.kicad_mod Publish 0.1.0 · Ray 23h ago
tl431-a.kicad_sym Publish 0.1.0 · Ray 23h ago
tl431-a.lbr Publish 0.1.0 · Ray 23h ago
tl431-a.step Publish 0.1.0 · Ray 23h ago
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray 22h ago

TL431-A

Foshan Blue Rocket Elec · Voltage References · TO-92-3

TL431-A from Foshan Blue Rocket Elec, in a TO-92-3. 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 K passive Cathode of the shunt regulator; sinks 1.0mA to 100mA continuous, with VKA up to 37V maximum.
2 A power_in Anode of the shunt regulator, normally connected to the lowest potential (ground) in the circuit.
3 R input Reference input with VREF of 2.495V typical and reference input current range of 0.05 to 10mA maximum.

Key specifications

Parameter Value
Manufacturer Foshan Blue Rocket Elec
Package TO-92-3
Category Power Management ICs
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 Current Range, Continuous IK -100 100 mA 2
Reference Input Current Range, Continuous IREF 0.05 10 mA 2
Storage Temperature Range Tstg -65 150 ℃ 2
Operating Ambient Temperature Tamb -40 125 ℃ 2
Cathode to Anode Voltage VKA 37 V 2
Power Dissipation PD 770 mW 2
Junction Temperature Tj 150 ℃ 2
Reference Input Voltage VREF 2.483 2.495 2.507 V VKA=VREF IK=10mA (A=0.5%) 2
Deviation of Reference Input Voltage Over-Temperature △VREF/△T 4.5 25 mV VKA=VREF IK=10mA TA=-40~125℃ 2
Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage △VREF/△VKA -1 -2.7 mV/V IK=10mA, △VKA=10V to VREF 2
Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage △VREF/△VKA -0.5 -2 mV/V IK=10mA, △VKA=36V to 10V 2
Reference Input current IREF 0.8 1 μA IK=10mA R1=10KΩ R2=open 2
Deviation of Reference Input Current Over Full Temperature Range △IREF/△T 0.4 1.2 μA IK=10mA R1=10KΩ, R2=open TA=-40~125℃ 2
Minimum Cathode Current for Regulation IK(min) 0.05 0.08 mA VKA=VREF 2
Off-state cathode current IK(off) 0.05 1 μA VKA=36V VREF=0V 2
Dynamic impedance /ZKA/ 0.15 0.5 Ω VKA=VREF f≤1.0KHz IK=1mA to 100mA 2

CAD (KiCad official)

  • Symbol: TL431-A
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: tl431-a-etched.step / tl431-a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431-a.step / tl431-a.glb are the bare package body.

Provenance

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

  • Datasheet: Foshan Blue Rocket Elec datasheet (7 pp, sha256 988f22243a741330, retrieved 2026-11-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-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).

Datasheet PDF