
Overview
The TL431 is a voltage Reference made by FOSAN in a SOT-23 package with 3 pins. -20℃~+70℃ 150mA 1uA 2.5V~36V 2.5V~36V 250uA Adjustable Parallel ±0.5% SOT-23 Voltage Reference ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:AZ432ANTR-TP, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. 243,819 are in stock at JLCPCB (part C20628876).
Symbol
Footprint
Parameters
9- Minimum Cathode Current for Regulation
- 250uA
- Operating Temperature
- -20℃~+70℃
- Output Current
- 150mA
- Output Type
- Adjustable
- Output Voltage
- 2.5V~36V
- Quiescent Current
- 1uA
- Reference Type
- Parallel
- Tolerance
- ±0.5%
- Voltage - Supply
- 2.5V~36V
Order codes
1- TL431LCSC C20628876
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | REF | Unspecified |
| 2 | C | Unspecified |
| 3 | A | Unspecified |
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/fosan/TL431" title="TL431 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/fosan/TL431.jpg" alt="TL431" width="1200" height="900">[](https://pcbkit.io/parts/fosan/TL431)Questions
Is there a KiCad symbol and footprint for the TL431?
Yes. The symbol is EasyEDA_Cloud:AZ432ANTR-TP and the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the TL431?
SOT-23, with 3 pins. Its footprint is drawn on this page.
Where is the TL431 datasheet?
FOSAN publishes it: the Datasheet link on this page opens it.
Where can I order the TL431?
JLCPCB lists it as part C20628876, with 243,819 in stock; the sellers' links on this page open their listings.
What can replace the TL431?
Parts like it in the library: the TL431 by AnBon, the XB431-TL by XINLUDA, the TL431N by Shikues and the WL431WS by Silicore. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8TL431
SOT-23-40℃~+85℃@(Ta) 150mA 1mA 2.5V~36V 37V 50ppm/℃ Adjustable Parallel ±0.5% SOT-23 Voltage Reference ROHSAnBonVoltage ReferenceXB431-TL
SOT-230℃~+70℃ 1.6uA 160mA 2.495V~36V 450uA Adjustable Parallel ±0.5% SOT-23 Voltage Reference ROHSXINLUDAVoltage ReferenceTL431N
SOT-23-25℃~+85℃ 150mA 1mA 2.5V~36V 2.5V~36V Adjustable Parallel ±0.5% SOT-23 Voltage Reference ROHSShikuesVoltage ReferenceWL431WS
SOT-23-40℃~+125℃ 150mA 2.5V~36V 2.5V~37V 400uA 50ppm/℃ Adjustable ±0.5% SOT-23 Voltage Reference ROHSSilicoreVoltage ReferenceAP432ASRG
SOT-23-20℃~+85℃@(Ta) 1.24V~20V 150uA 200mA 30ppm/℃ Adjustable Parallel ±0.5% SOT-23 Voltage Reference ROHSDiodes IncorporatedVoltage ReferenceRS431AXSF3-Q1
SOT-23SOT-23 Voltage Reference ROHSJiangsu RUNIC TechVoltage ReferenceTL431B
SOT-23-20℃~+70℃@(Ta) 150mA 1uA 2.5V~36V 2.5V~36V 250uA Adjustable Parallel ±0.3% SOT-23 Voltage Reference ROHShongjiachengVoltage ReferenceTL431A
SOT-23-20℃~+70℃@(Ta) 150mA 1uA 2.5V~36V 2.5V~36V 250uA Adjustable Parallel ±0.5% SOT-23 Voltage Reference ROHShongjiachengVoltage Reference