2 layers95 × 70 mm
2 layers17 × 19 mm
HT7333
lessthan00/HT7333kicad LDO vin12V vout3.3V iout250mA iq3uA
- Size
- 17 × 19 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 8
- Nets
- 3
- Pads
- 19
- Tracks, vias
- 32, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 May 2025
- Updated
- 19 May 2025
Overview
HT7333 is an open-source printed circuit board by lessthan00, from the lessthan00/HT7333 repository on GitHub. It is a 2-layer board of 17 × 19 mm with 8 parts on 3 nets, routed with 32 tracks and 0 vias.
It is built around the HT7333, SMAJ12CA and SMF3.3CA. Its parts include 4 capacitors, 2 diodes, 1 IC and 1 connector.
Main components
3
HT7333
SOT-89-40℃~+85℃ 1 1.5uA 20V 3.3V 300mA 300mV@(100mA) Fixed Positive Short Circuit Protection SOT-89 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMinosVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SMAJ12CA
DO-214AC(SMA)ESD And Surge Protection (TVS/ESD)hongjiacheng
SMF3.3CA
SOD-123FL-55℃~+150℃ 200W@10/1000us 27.4A@10/1000us 3.3V 5.3V 500uA 7.3V Bidirectional IEC 61000-4-2 TVS SOD-123FL ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
README
README.mdHT7333
LDO
VIN 12V VOUT 3.3V IOUT 250mA package SOT-89-3 IQ 3uA VD 90mV@40mA
引脚定义
1 GND 2 VIN 3 VOUT
所以使用kciad 里面的 Regulator_Generic_GND_IN_OUT 生成符号
封装采用PCM_Package_TO_SOT_SMD_AKL:SOT-89-3, 已确认封装焊盘顺序定义无误
Parts
8| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100nF | PCM_Capacitor_SMD_AKL:C_1206_3216Metric | C2, C4 |
| 2 | 10uF | PCM_Capacitor_SMD_AKL:C_1206_3216Metric | C1, C3 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | HT7333 | PCM_Package_TO_SOT_SMD_AKL:SOT-89-3 | U1 |
| 1 | SMAJ12CA | PCM_Diode_SMD_AKL:D_SMA_TVS | D1 |
| 1 | SMF3.3CA | PCM_Diode_SMD_AKL:D_SOD-123F | D2 |
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Questions
How big is the HT7333 PCB?
It measures 17 × 19 mm and has 2 copper layers, 1.6 mm thick.
What parts does the HT7333 use?
8 parts, built around the HT7333, SMAJ12CA and SMF3.3CA. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the HT7333 KiCad files?
From the lessthan00/HT7333 repository on GitHub, at the commit this page was made from: the board is HT7333.kicad_pcb and its schematic HT7333.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the HT7333 design in my own project?
Its repository states no licence, so its author keeps all rights: ask lessthan00 before reusing the design.