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AS431BZTR-E1

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Diodes Incorporated Voltage References, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icsas431bztr-e1factory-2.0.0extractor-text

Verified AS431BZTR-E1

by Ray · last 7 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

7 Nov 2026RayPublished by the parts factory: tier mfr, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: AS431BZTR-E1 · TO-92-3 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 20-page datasheet
  • ✓distributor: lcsc C516587, digikey 31-AS431BZTR-E1CT-ND, mouser 621-AS431BZTR-E1
  • ✓family: TO-92_Inline
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-9dviymko/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✓ as431bztr-e1.kicad_sym✓ as431bztr-e1.kicad_mod✓ as431bztr-e1.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 7h ago
viewers as431bztr-e1: viewers · Ray 7h ago
as431bztr-e1-etched.glb Publish 0.1.0 · Ray 7h ago
as431bztr-e1-etched.step as431bztr-e1: factory component page (tier=mfr) · Ray 7h ago
as431bztr-e1-hero.glb as431bztr-e1: hero GLB from the etched model (keeps the MPN mark) · Ray 7h ago
as431bztr-e1-hero.overlay.json Publish 0.1.0 · Ray 7h ago
as431bztr-e1.glb Publish 0.1.0 · Ray 7h ago
as431bztr-e1.kicad_mod Publish 0.1.0 · Ray 7h ago
as431bztr-e1.kicad_sym Publish 0.1.0 · Ray 7h ago
as431bztr-e1.lbr Publish 0.1.0 · Ray 7h ago
as431bztr-e1.step Publish 0.1.0 · Ray 7h ago
package.json Publish 0.1.0 · Ray 7h ago
page.json Set visibility: public · Ray 7h ago
README.md Publish 0.1.0 · Ray 7h ago
verification.json Verified: Published by the parts factory: tier mfr, 3 pins · Ray 7h ago

AS431BZTR-E1

Diodes Incorporated · Voltage References · TO-92-3

AS431BZTR-E1 from Diodes Incorporated, 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 REF input Reference input that sets the output voltage via an external divider, with VREF of 2.5V (2.487V to 2.512V for 0.5% grade, 2.475V to 2.525V for 1.0% grade) and a typical reference current of 0.7µA.
2 CATHODE passive Shunt regulator cathode, operating from VREF up to 36V (absolute maximum 40V) with a cathode sink current of 1mA to 100mA.
3 ANODE power_in Anode, the ground-side return of the shunt regulator, which is normally connected to circuit ground.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
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 Voltage (1.0% grade) VREF 2.475 2.5 2.525 V VKA = VREF, IKA = 10mA 5
Deviation of Reference Voltage Over Full Temperature Range ΔVREF 4.5 8 mV VKA = VREF, IKA = 10mA, 0 to +70°C 5
Deviation of Reference Voltage Over Full Temperature Range ΔVREF 4.5 10 mV VKA = VREF, IKA = 10mA, -40 to +85°C 5
Deviation of Reference Voltage Over Full Temperature Range ΔVREF 4.5 16 mV VKA = VREF, IKA = 10mA, -40 to +125°C 5
Ratio of Change in Reference Voltage to Change in Cathode Voltage ΔVREF/ΔVKA -1 -2.7 mV/V IKA = 10mA, ΔVKA = 10V to VREF 5
Ratio of Change in Reference Voltage to Change in Cathode Voltage ΔVREF/ΔVKA -0.5 -2 mV/V IKA = 10mA, ΔVKA = 36V to 10V 5
Reference Current IREF 0.7 4 µA IKA = 10mA, R1 = 10kΩ, R2 = ∞ 5
Deviation of Reference Current Over Full Temperature Range ΔIREF 0.4 1.2 µA IKA = 10mA, R1 = 10kΩ, R2 = ∞, TA = -40 to +125°C 5
Minimum Cathode Current for Regulation IKA(Min) 0.4 1 mA VKA = VREF 5
Off-state Cathode Current IKA(Off) 0.05 1 µA VKA = 36V, VREF = 0 5
Dynamic Impedance ZKA 0.15 0.5 Ω VKA = VREF, IKA = 1 to 100mA, f ≤ 1.0kHz 5
Thermal Resistance Junction-to-Case (TO92 Ammo Packing) θJC 81.9 °C/W TO92 (Ammo Packing) 5
Cathode Voltage VKA 40 V 4
Cathode Current Range (Continuous) IKA -100 150 mA 4
Reference Input Current Range IREF 10 mA 4
Power Dissipation (Z package, TO92) PD 770 mW Z, R Package 4
Junction Temperature TJ 150 °C 4
Storage Temperature Range TSTG -65 150 °C 4
ESD (Human Body Model) ESD 2000 V Human Body Model 4
Cathode Voltage (recommended) VKA 36 V min = VREF 4
Cathode Current (recommended) IKA 1 100 mA 4
Operating Ambient Temperature Range TA -40 125 °C 4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing Abs ESD ESD (Human Body Model) 2000 V Note 5: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and 4

CAD (KiCad official)

  • Symbol: AS431BZTR-E1
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: as431bztr-e1-etched.step / as431bztr-e1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); as431bztr-e1.step / as431bztr-e1.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (20 pp, sha256 03f54aac77941ed9, retrieved 2026-11-07, tier: manufacturer)
  • 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