Overview
The SM12 is an ESD And Surge Protection made by Leiditech in a SOT-23 package with 3 pins. -55℃~+125℃ 12V 13.3V 150pF 1uA 25.9V 300W@8/20us 5A IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 TVS SOT-23 ESD and Surge Protection (TVS/ESD) ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SM12.N, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. 23 are in stock at JLCPCB (part C384873).
Symbol
Footprint
Parameters
12- Clamping Voltage
- 25.9V
- Junction Capacitance
- 150pF
- Number of Channels
- 2
- Operating Temperature
- -55℃~+125℃
- Peak Pulse Current (Ipp)
- 5A
- Peak Pulse Power Dissipation (Ppp)
- 300W@8/20us
- Polarity
- Unidirectional
- Reverse Leakage Current (Ir)
- 1uA
- Reverse Stand-Off Voltage (Vrwm)
- 12V
- Type
- TVS
- Voltage - Breakdown
- 13.3V
- level of protection
- IEC 61000-4-4
Order codes
1- SM12LCSC C384873
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | 1 | Unspecified |
| 2 | 2 | Unspecified |
| 3 | 3 | Unspecified |
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<iframe src="https://pcbkit.io/embed/parts/leiditech/SM12" title="SM12 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/leiditech/SM12.jpg" alt="SM12" width="1200" height="900">[](https://pcbkit.io/parts/leiditech/SM12)Questions
Is there a KiCad symbol and footprint for the SM12?
Yes. The symbol is EasyEDA_Cloud:SM12.N 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 SM12?
SOT-23, with 3 pins. Its footprint is drawn on this page.
Where is the SM12 datasheet?
Leiditech publishes it: the Datasheet link on this page opens it.
Where can I order the SM12?
JLCPCB lists it as part C384873, with 23 in stock; the sellers' links on this page open their listings.
What can replace the SM12?
Parts like it in the library: the PSM712-LF-T7 by PROTEK, the SM712 by DOWO, the CDSOT23-SM712-ES by ElecSuper and the SM712 by MDD. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8
PSM712-LF-T7
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