Overview
The SR3.3 is an ESD And Surge Protection made by TECH PUBLIC in a SOT-143 package with 4 pins.
PCBKit's library has its footprint (Package_TO_SOT_SMD:SOT-143, from KiCad's library), ready for a KiCad board. 1,245 are in stock at JLCPCB (part C7202953).
Symbol
The library has no symbol for this part yet.
Footprint
Parameters
12- Clamping Voltage
- 15V
- Junction Capacitance
- 0.6pF
- Number of Channels
- 2
- Operating Temperature
- -55℃~+125℃
- Peak Pulse Current (Ipp)
- 4A@8/20us
- Peak Pulse Power Dissipation (Ppp)
- 80W@8/20us
- Polarity
- Unidirectional
- Reverse Leakage Current (Ir)
- 80nA
- Reverse Stand-Off Voltage (Vrwm)
- 3.3V
- Type
- TVS
- Voltage - Breakdown
- 4.2V
- level of protection
- IEC 61000-4-2
Order codes
1- SR3.3LCSC C7202953
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<iframe src="https://pcbkit.io/embed/parts/tech-public/SR3.3" title="SR3.3 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/tech-public/SR3.3.jpg" alt="SR3.3" width="1200" height="900">[](https://pcbkit.io/parts/tech-public/SR3.3)Questions
Is there a KiCad symbol and footprint for the SR3.3?
Yes. the footprint Package_TO_SOT_SMD:SOT-143, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SR3.3?
SOT-143, with 4 pins. Its footprint is drawn on this page.
Where is the SR3.3 datasheet?
TECH PUBLIC publishes it: the Datasheet link on this page opens it.
Where can I order the SR3.3?
JLCPCB lists it as part C7202953, with 1,245 in stock; the sellers' links on this page open their listings.
What can replace the SR3.3?
Parts like it in the library: the CD143A-SR3.3 by Bourns, the CM1293A-02SR by onsemi, the D1213A-02SR by Diodes Incorporated and the CM1213A-02SR by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8
CD143A-SR3.3
SOT-14312A@8/20us 2 200W 3.3V 3.5V 4.5pF 7V IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 TVS Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSBournsESD And Surge Protection (TVS/ESD)CM1293A-02SR
SOT-143-40℃~+85℃@(Ta) 1A 1uA 2 2pF 3.3V 9.9V ESD IEC 61000-4-2 Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSonsemiESD And Surge Protection (TVS/ESD)D1213A-02SR
SOT-1430.85pF 100nA 10V 1A@8/20us 2 3.3V 6V IEC 61000-4-2 TVS Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSDiodes IncorporatedESD And Surge Protection (TVS/ESD)CM1213A-02SR
SOT-143-40℃~+85℃ 0.85pF 100nA 10V 1A 2 3.3V ESD IEC 61000-4-2 Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSonsemiESD And Surge Protection (TVS/ESD)TPESD03Y2S4
SOT-143-55℃~+125℃ 0.3pF、0.6pF 15V 3.3V 4.2V 80nA ESD Four channels IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)SR3.3.TCT
SOT-143-55℃~+125℃ 150W 15V 1uA 2 3.3V 3pF、10pF ESD IEC 61000-4-2、IEC 61000-4-4 SOT-143 ESD and Surge Protection (TVS/ESD) ROHSSEMTECHESD And Surge Protection (TVS/ESD)CM1293A-02SR
SOT-143100nA 12V 1pF 2 3.3V 4A@8/20us 9V IEC 61000-4-5 SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)TPCM1293A-02SR
SOT-14312V 1nA 1pF 2 3.3V 7A@8/20us 9V IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 TVS SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)