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TL431AW5-7

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Diodes Incorporated Voltage References, SOT-25. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icstl431aw5-7factory-2.0.0extractor-text

Verified TL431AW5-7

by Ray · last 7 Nov 2026 · 1 record · files match
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Verification log 1 record

7 Nov 2026RayPublished by the parts factory: tier mfr, 5 pinsfiles match
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  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: TL431AW5-7 · SOT-25 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 14-page datasheet
  • ✓distributor: lcsc C460754, digikey TL431AW5-7DITR-ND, mouser 621-TL431AW5-7
  • ✓family: SOT-23-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-nkb5i3tf/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: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ tl431aw5-7.kicad_sym✓ tl431aw5-7.kicad_mod✓ tl431aw5-7.step
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Contents

README

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TL431AW5-7

Diodes Incorporated · Voltage References · SOT-25

TL431AW5-7 from Diodes Incorporated, in a SOT-25. 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 NC unconnected No connection.
2 ANODE (leave floating or connect to pin 5) power_in Datasheet says to leave this pin floating or connect it to pin 5 (ANODE).
3 CATHODE passive Cathode of the shunt regulator, operating from VREF to 36V (40V absolute maximum) with 1mA to 100mA cathode current (150mA absolute maximum).
4 REF input Reference input with VREF of 2.495V typical (TL431A: ±1.0%) and reference input current rated -0.050 to +10mA absolute maximum.
5 ANODE power_in Anode of the shunt regulator; all voltages are specified relative to this pin.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-25
Category Power Management ICs
Pins 5

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 VREF 2.47 2.495 2.52 V VKA = VREF, IKA = 10mA (TL431A row) 3
Deviation of reference voltage over full temperature range VDEV 6 16 mV VKA = VREF, IKA = 10mA, TA = 0 to 70°C 3
Deviation of reference voltage over full temperature range VDEV 14 34 mV VKA = VREF, IKA = 10mA, TA = -40 to +85°C 3
Ratio of change in reference voltage to change in cathode voltage ΔVREF/ΔVKA -1.4 -2.7 mV/V IKA = 10mA, VKA = 10V to VREF 3
Ratio of change in reference voltage to change in cathode voltage ΔVREF/ΔVKA -1 -2 mV/V IKA = 10mA, VKA = 36V to 10V 3
Reference input current IREF 1 4 µA IKA = 10mA, R1 = 10KΩ, R2 = ∞ 3
IREF deviation over full temperature range ΔIREF 0.8 1.2 µA IKA = 10mA, R1 = 10KΩ, R2 = ∞, TA = 0 to 70°C 3
IREF deviation over full temperature range ΔIREF 0.8 2.5 µA IKA = 10mA, R1 = 10KΩ, R2 = ∞, TA = -40 to +85°C 3
Minimum cathode current for regulation IKA(MIN) 0.4 0.7 mA VKA = VREF 3
Off-state current IKA(OFF) 0.05 0.5 µA VKA = 36V, VREF = 0V 3
Dynamic output impedance /ZKA/ 0.2 0.5 Ω VKA = VREF, f = 0Hz 3
Cathode Voltage (recommended operating) VKA 36 V Min is VREF 2
Cathode Current (recommended operating) IKA 1 100 mA 2
Operating Ambient Temperature TA -40 125 °C 2
Cathode Voltage VKA 40 V Voltages relative to ANODE pin 2
Continuous Cathode Current IKA 150 mA 2
Reference Input Current IREF -0.05 10 mA 2
Operating Junction Temperature TJ 150 °C 2
Storage Temperature TST -55 150 °C 2
Power Dissipation (SOT25) PD 500 mW Ratings apply to ambient temperature at 25°C 2
Thermal Resistance Junction to Ambient (SOT25) θJA 250 °C/W 3

CAD (KiCad official)

  • Symbol: TL431AW5-7
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25 (KiCad packages3D, STEP)
  • 3D model files: tl431aw5-7-etched.step / tl431aw5-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431aw5-7.step / tl431aw5-7.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (14 pp, sha256 8ce0c11446beda6f, 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