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TL1431ACZ on a board, in 3D

TL1431ACZ

STMicroelectronics

-20℃~+70℃@(Ta) 100mA 2.5V~36V 2.5V~36V 600uA 90ppm/℃ Adjustable Parallel ±0.25% TO-92 Voltage Reference ROHS

Extended
DatasheetJLCPCBLCSCst/TL1431ACZ
Category
Voltage Reference
Package
TO-92
Pins
3

Overview

The TL1431ACZ is a voltage Reference made by STMicroelectronics in a TO-92 package with 3 pins. -20℃~+70℃@(Ta) 100mA 2.5V~36V 2.5V~36V 600uA 90ppm/℃ Adjustable Parallel ±0.25% TO-92 Voltage Reference ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:TL431(TO92)-TD, from EasyEDA) and its footprint (Package_TO_SOT_THT:TO-92L, from KiCad's library), ready for a KiCad board. 2 are in stock at JLCPCB (part C1575685). 2 open-source boards in 2 repositories on GitHub use it.

Symbol

R1K3A2
EasyEDA_Cloud:TL431(TO92)-TDFrom EasyEDA

Footprint

123
Package_TO_SOT_THT:TO-92LFrom KiCad's library

Parameters

9
Minimum Cathode Current for Regulation
600uA
Operating Temperature
-20℃~+70℃@(Ta)
Output Current
100mA
Output Type
Adjustable
Output Voltage
2.5V~36V
Reference Type
Parallel
Temperature Coefficient
90ppm/℃
Tolerance
±0.25%
Voltage - Supply
2.5V~36V

Order codes

1

Pinout

3
The pins of the TL1431ACZ
PinNameType
1RUnspecified
2AUnspecified
3KUnspecified

Open-source boards using it

All 2
  • 2 layers200 × 120 mmDremel PCB1857 V1, the printed circuit board in 3D

    Dremel PCB1857 V1

    Jajaho/Bosch-Dremel-GAL-1215-CV-repair

    Reverse engineered schematics for PCB1857V1 of a Dremel 12 V battery charger.

    57 parts
  • 4 layers85 × 70 mmWave gen, the printed circuit board in 3D

    Wave gen

    m-chwast/tiny-waveform-generator

    Engineering thesis, Applied CS 2026

    141 parts

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A picture that opens the part, for a README
[![TL1431ACZ](https://pcbkit.io/embed/parts/st/TL1431ACZ.jpg?size=s)](https://pcbkit.io/parts/st/TL1431ACZ)

Questions

Is there a KiCad symbol and footprint for the TL1431ACZ?

Yes. The symbol is EasyEDA_Cloud:TL431(TO92)-TD and the footprint Package_TO_SOT_THT:TO-92L, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the TL1431ACZ?

TO-92, with 3 pins. Its footprint is drawn on this page.

Where is the TL1431ACZ datasheet?

STMicroelectronics publishes it: the Datasheet link on this page opens it.

Where can I order the TL1431ACZ?

JLCPCB lists it as part C1575685, with 2 in stock; the sellers' links on this page open their listings.

What can replace the TL1431ACZ?

Parts like it in the library: the TL1431ACZT by STMicroelectronics, the TL431K-T92-B by UTC, the TL431G by YFW and the TL431-TO-92 by DDF. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the TL1431ACZ?

2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8