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BR431-A

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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 icsbr431-afactory-2.0.0extractor-text

Verified BR431-A

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 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: BR431-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-nk5wyv_0/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
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ br431-a.kicad_sym✓ br431-a.kicad_mod✓ br431-a.step
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Ray Publish 0.1.0 9a1b340 3h ago

BR431-A

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

BR431-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, rated for a cathode-to-anode voltage of 37 V and a continuous cathode current of -100 to +100 mA.
2 A passive Anode of the shunt regulator; the datasheet gives no separate electrical limit for this pin beyond the cathode-to-anode rating.
3 R input Reference input of the adjustable regulator, which sets the 2.500 V reference (2.490 V to 2.510 V at 0.4% tolerance) and accepts a continuous reference input current of 0.05 to 10 mA.

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
Reference input voltage VREF 2.49 2.5 2.51 V VKA=VREF IK=10mA (A=0.4%) 2
Deviation of reference input voltage over temperature △VREF/T 4.5 17 mV VKA=VREF IK=10mA TA=-25～85℃ 2
Ratio of change in reference input voltage to 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 change in cathode voltage △VREF/△VKA -0.45 -2 mV/V IK=10mA △VKA=36V to 10V 2
Reference input current IREF 1 4 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) 0.4 1 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
Cathode to anode voltage VKA 37 V Ta=25℃ 2
Cathode current range, continuous IK -100 100 mA Ta=25℃ 2
Reference input current range, continuous IREF 0.05 10 mA Ta=25℃ 2
Power dissipation PD 770 mW Ta=25℃ 2
Operating ambient temperature Tamb -40 125 ℃ Ta=25℃ 2
Junction temperature Tj 160 ℃ Ta=25℃ 2
Storage temperature range Tstg -65 150 ℃ Ta=25℃ 2

CAD (KiCad official)

  • Symbol: BR431-A
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: br431-a-etched.step / br431-a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); br431-a.step / br431-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 b44f5663c13491a1, retrieved 2026-10-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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