Overview
The SM4T28AY is an ESD And Surge Protection made by STMicroelectronics in a SMA(DO-214AC) package with 2 pins. -55℃~+150℃ 2.3kW@8/20us 200nA 24V 29.5V 46A@8/20us 50V 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. 21 are in stock at JLCPCB (part C1974227).
Symbol
Footprint
Parameters
10- Clamping Voltage
- 50V
- Number of Channels
- Single-channel
- Operating Temperature
- -55℃~+150℃
- Peak Pulse Current (Ipp)
- 46A@8/20us
- Peak Pulse Power Dissipation (Ppp)
- 2.3kW@8/20us
- Polarity
- Unidirectional
- Reverse Leakage Current (Ir)
- 200nA
- Reverse Stand-Off Voltage (Vrwm)
- 24V
- Type
- TVS
- Voltage - Breakdown
- 26.7V
Order codes
1- SM4T28AYLCSC C1974227
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | A1 | Passive |
| 2 | A2 | Passive |
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Is there a KiCad symbol and footprint for the SM4T28AY?
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 SM4T28AY?
SMA(DO-214AC), with 2 pins. Its footprint is drawn on this page.
Where is the SM4T28AY datasheet?
STMicroelectronics publishes it: the Datasheet link on this page opens it.
Where can I order the SM4T28AY?
JLCPCB lists it as part C1974227, with 21 in stock; the sellers' links on this page open their listings.
What can replace the SM4T28AY?
Parts like it in the library: the SMAJ24A by GOODWORK, the SMAJ24CA by GOODWORK, the SMAJ24CA by hongjiacheng and the SMAJ24A by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8
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DO-214AC(SMA)-55℃~+150℃ 1 10.3A 1uA 24V 26.7V 38.9V 400W@10/1000us Bidirectional IEC 61000-4-2 TVS DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)SMAJ24CA
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