component

LM431CCZ

Public Made by Adom

by adom

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

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LM431CCZ

onsemi · Voltage References · TO-92

LM431CCZ from onsemi, in a TO-92. 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 of the programmable shunt regulator, where VREF is approximately 2.5 V and the output is set with two external resistors up to 36 V.
2 Anode passive Anode terminal of the three-terminal adjustable regulator, through which the cathode current returns.
3 Cathode output Cathode output of the regulator, with recommended cathode voltage from VREF to 36 V and cathode current from 1.0 to 100 mA.

Key specifications

Parameter Value
Manufacturer onsemi
Package TO-92
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 2.482 2.495 2.508 V VKA = VREF, IKA = 10 mA 3
Deviation of Reference Input Voltage Over-Temperature VREF/T 4.5 17 mV VKA = VREF, IKA = 10 mA, TMIN ≤ TA ≤ TMAX (Note 1) 3
Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage VREF/VKA -1 -2.7 mV/V IKA = 10 mA, VKA = 10 V−VREF 3
Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage VREF/VKA -0.5 -2 mV/V IKA = 10 mA, VKA = 36 V−10 V 3
Reference Input Current IREF 1.5 4 A IKA = 10 mA, R1 = 10 k, R2 = ∞ 3
Deviation of Reference Input Current Over Full Temperature Range IREF/T 0.4 1.2 A IKA = 10 mA, R1 = 10 k, R2 = ∞, TA = Full Range 3
Minimum Cathode Current for Regulation IKA(MIN) 0.45 1 mA VKA = VREF 3
Off-Stage Cathode Current IKA(OFF) 0.05 1 A VKA = 36 V, VREF = 0 3
Dynamic Impedance ZKA 0.15 0.5 VKA = VREF, IKA = 1 to 100 mA, f ≥ 1.0 kHz 3
Cathode Voltage VKA 36 V 3
Cathode Current IKA 1 100 mA 3
Output Voltage Tolerance (LM431CCZ) -0.5 0.5 % LM431CCZ, Output Voltage Tolerance 0.5% 7
Cathode Voltage VKA 37 V 3
Cathode Current Range (Continuous) IKA -100 150 mA 3
Reference Input Current Range IREF -0.05 10 mA 3
Power Dissipation PD 770 mW 3
Thermal Resistance, Junction to Ambient RθjA 160 °C/W 3
Operating Temperature Range − LM431xC TOPR -25 85 °C LM431xC 3
Junction Temperature TJ 150 °C 3
Storage Temperature Range TSTG -65 150 °C 3

CAD (KiCad official)

  • Symbol: LM431CCZ
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: lm431ccz-etched.step / lm431ccz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm431ccz.step / lm431ccz.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (10 pp, sha256 1426c7f876f1bc6f, retrieved 2026-10-28, tier: manufacturer)
  • 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