
Overview
The SMAJ12A is an ESD And Surge Protection made by GOODWORK in a DO-214AC(SMA) package with 2 pins. -55℃~+150℃ 12V 13.3V 19.9V 20.1A 400W 5uA TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHS.
PCBKit's library has its KiCad symbol (Diode:SMAJ12A, from KiCad's library) and its footprint (Diode_SMD:D_SMA, from KiCad's library), ready for a KiCad board. 94,291 are in stock at JLCPCB (part C908766). 45 open-source boards in 40 repositories on GitHub use it.
Symbol
Footprint
Parameters
10- Clamping Voltage
- 19.9V
- Number of Channels
- 1
- Operating Temperature
- -55℃~+150℃
- Peak Pulse Current (Ipp)
- 20.1A
- Peak Pulse Power Dissipation (Ppp)
- 400W
- Polarity
- Unidirectional
- Reverse Leakage Current (Ir)
- 5uA
- Reverse Stand-Off Voltage (Vrwm)
- 12V
- Type
- TVS
- Voltage - Breakdown
- 13.3V
Order codes
1- SMAJ12ALCSC C908766
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | A1 | Passive |
| 2 | A2 | Passive |
Open-source boards using it
All 45- 2 layers210.1 × 69.6 mm

- 6 layers499.5 × 326 mm

OLD obfuscated DontUse link
Jeo0/atg-client
automatic trajectory generator cross-platform client for acoustic volumetric displays (dis our thesis :))
548 parts3 - 2 layers45.1 × 101 mm

LabEA1
Danmuse/Lab_EA1_FRBA
This project covers the design and verification of single-stage amplifier circuits using bipolar and field-effect transistors.
81 parts2 - 2 layers98.5 × 76 mm

Extension
dxy250312/-RK3588-PCB-YOLO-
基于 YOLOv11 与 ELF 2(RK3588)的 PCB 裸板缺陷检测系统。项目包含模型训练、数据集配置、RKNN 部署、Qt 可视化界面以及 RK3588 GPIO 控制示例,可用于学习边缘 AI 在工业视觉中的应用。
38 parts2MIT - 2 layers100 × 50 mm

Dew Controller
kuellenberg/Dew-Controller
Dew heater controller for telescope dew heater straps
92 parts2 - 2 layers82 × 97 mm

Remi V4.2
yousseftamer-eng/Ratatouille_3_Micromouse
Remi 3 — micromouse robot that won 2nd place at IEEE Mansoura's Victories 4 micromouse competition. Includes PCB schematics, fabrication files, CAD models, and firmware.
62 parts2MIT - 2 layers104 × 62 mm

- 6 layers25.9 × 16.8 mm

Knuckle
HeyPCB/knuckle
35 mm round FOC driver for a GBM2804 gimbal motor that answers on the Open Duck Mini's servo bus as an STS3215. 6-layer KiCad 10 board plus printed standoff, cover and horn adapter.
45 parts1CERN-OHL-S-2.0
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<iframe src="https://pcbkit.io/embed/parts/goodwork/SMAJ12A" title="SMAJ12A in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/goodwork/SMAJ12A.jpg" alt="SMAJ12A" width="1200" height="900">[](https://pcbkit.io/parts/goodwork/SMAJ12A)Questions
Is there a KiCad symbol and footprint for the SMAJ12A?
Yes. The symbol is Diode:SMAJ12A 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 SMAJ12A?
DO-214AC(SMA), with 2 pins. Its footprint is drawn on this page.
Where is the SMAJ12A datasheet?
GOODWORK publishes it: the Datasheet link on this page opens it.
Where can I order the SMAJ12A?
JLCPCB lists it as part C908766, with 94,291 in stock; the sellers' links on this page open their listings.
What can replace the SMAJ12A?
Parts like it in the library: the SMAJ12CA by hongjiacheng, the SMAJ12CA/TR13 by Brightking, the SMAJ12CA by GOODWORK and the SMAJ12A by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the SMAJ12A?
45 boards in 40 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8SMAJ12CA
DO-214AC(SMA)ESD And Surge Protection (TVS/ESD)hongjiachengSMAJ12CA/TR13
SMA(DO-214AC)12V 13.3V 19.9V 1uA 20.1A 400W Bidirectional TVS SMA(DO-214AC) ESD and Surge Protection (TVS/ESD) ROHSBrightkingESD And Surge Protection (TVS/ESD)SMAJ12CA
DO-214AC(SMA)-55℃~+150℃ 12V 13.3V 19.9V 20.1A 400W 5uA Bidirectional TVS DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSGOODWORKESD And Surge Protection (TVS/ESD)SMAJ12A
DO-214AC(SMA)ESD And Surge Protection (TVS/ESD)hongjiachengSMAJ12A
DO-214AC(SMA)-65℃~+150℃ 12V 14.7V 19.9V 1uA 20.1A@10/1000us 400W@10/1000us TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)SMAJ12A
SMA(DO-214AC)12V 14.7V 19.9V 1uA 20.1A@10/1000us 400W@10/1000us TVS Unidirectional SMA(DO-214AC) ESD and Surge Protection (TVS/ESD) ROHSBORNESD And Surge Protection (TVS/ESD)SMAJ12A
DO-214AC(SMA)-65℃~+150℃ 12V 14.7V 19.9V 1uA 20.1A@10/1000us 400W@10/1000us IEC 61000-4-2、IEC 61000-4-4 TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)SMAJ12CA
SMA-65℃~+150℃ 12V 14.7V 19.9V 1uA 20.1A@10/1000us 400W@10/1000us TVS SMA ESD and Surge Protection (TVS/ESD) ROHS晶导微电子ESD And Surge Protection (TVS/ESD)