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12

SM4T21AY

STMicroelectronicsExtended

-55℃~+150℃ 18V 200nA 22.2V 39.3V 400W@10/1000us 59A@8/20us TVS Unidirectional SMA(DO-214AC) ESD and Surge Protection (TVS/ESD) ROHS

Part id
st/SM4T21AY
Category
ESD And Surge Protection (TVS, ESD)
Package
SMA(DO-214AC)
Pins
2
In stock
12 at JLCPCB (C1974229)
Used on
1 open-source board

Overview

The SM4T21AY is an ESD And Surge Protection made by STMicroelectronics in a SMA(DO-214AC) package with 2 pins. -55℃~+150℃ 18V 200nA 22.2V 39.3V 400W@10/1000us 59A@8/20us TVS Unidirectional SMA(DO-214AC) ESD and Surge Protection (TVS/ESD) ROHS.

PCBKit's library has its KiCad symbol (Device:D_TVS, from KiCad's library) and its footprint (Diode_SMD:D_SMA, from KiCad's library), ready for a KiCad board. 12 are in stock at JLCPCB (part C1974229). 1 open-source board in 1 repository on GitHub use it.

Symbol

Device:D_TVSFrom KiCad's library

Footprint

12
Diode_SMD:D_SMAFrom KiCad's library

Pinout

2
The pins of the SM4T21AY
PinNameType
1A1Passive
2A2Passive

Open-source boards using it

1
  • 2 layers39 × 49 mmAdc to can, the printed circuit board in 3D

    Adc to can

    Diavolo-v/ADC-to-CAN-Module

    Design of ADC-to-CAN measurement module for Formula Student

    34 parts

Parts like it

8

Questions

Is there a KiCad symbol and footprint for the SM4T21AY?

Yes. The symbol is Device:D_TVS and the footprint Diode_SMD:D_SMA, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the SM4T21AY?

SMA(DO-214AC), with 2 pins. Its footprint is drawn on this page.

Where is the SM4T21AY datasheet?

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

Where can I order the SM4T21AY?

JLCPCB lists it as part C1974229, with 12 in stock; the sellers' links on this page open their listings.

What can replace the SM4T21AY?

Parts like it in the library: the SMAJ18A by GOODWORK, the SMAJ18CA by hongjiacheng, the SMAJ18CA by GOODWORK and the SMAJ18A by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the SM4T21AY?

1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.