4 layers30 × 51 mm
Env sensor b
marcelpetrick/sensorly-unhinged
My very first PCB: an ESP32-C6 temperature/humidity sensor prototype, exploring compact and thermally isolated layouts from one shared electrical design.
64 parts1GPL-3.0
Overview
The SHT45-AD1F-R2 is an uncategorised made by Sensirion in a DFN-4 package with 4 pins. -40℃~+125℃ 0%RH~100%RH 1.08V~3.6V 16bit 400nA Factory calibration、Chemical gas resistance、Built-in heater I2C ±0.1℃ ±1%RH DFN-4 Temperature and Humidity Sensor ROHS.
PCBKit's library has its KiCad symbol (Sensor_Humidity:SHT4x, from KiCad's library) and its footprint (Sensor_Humidity:Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad, from KiCad's library), ready for a KiCad board. 3,644 are in stock at JLCPCB (part C5360602). 7 open-source boards in 6 repositories on GitHub use it.
Symbol
Footprint
Parameters
9- Current - Supply
- 400nA
- Features
- Built-in heater
- Humidity
- 0%RH~100%RH
- Humidity Tolerance
- ±1%RH
- Interface
- I2C
- Resolution
- 16bit
- Temperature Range
- -40℃~+125℃
- Temperature Tolerance
- ±0.1℃
- Voltage - Supply
- 1.08V~3.6V
Order codes
1- SHT45-AD1F-R2LCSC C5360602
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | SDA | Input/output |
| 2 | SCL | Input |
| 3 | VDD | Power in |
| 4 | VSS | Power in |
Open-source boards using it
All 7- 2 layers49 × 50.4 mm
- 4 layers70 × 109.2 mm
Manafish
Tropaion/Manafish_Mainboard
The Manafish Mainboard is the main electronics board of the Manafish ROV. It replaces the Raspberry Pi 3B, the USB-connected Raspberry Pi Pico and the wiring between them with one board:
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Nrf moisture sensor
alxgmpr/moisture-sensor
Indoor capacitive soil moisture sensor - nRF54L15 + nPM1300 + FDC1004, BTHome v2 over BLE
60 parts - 4 layers42 × 155 mm
Nrf moisture sensor
alxgmpr/moisture-sensor
Indoor capacitive soil moisture sensor - nRF54L15 + nPM1300 + FDC1004, BTHome v2 over BLE
62 parts - 2 layers90 × 60 mm
Stridophone
jayis1/hardware-design-lab
Full-cycle hardware device designs — each device in its own subfolder with architecture, schematics, PCB layout, and software stack
18 parts - 2 layers87.9 × 37.5 mm
Middle PCB
StanZalewski/Autonomous-remote-monitoring-system-based-on-the-LoRaWAN-protocol
Solar-powered LoRaWAN weather station — 3 custom PCBs, bare-metal STM32, 4.3 km verified link
29 parts
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<iframe src="https://pcbkit.io/embed/parts/sensirion/SHT45-AD1F-R2" title="SHT45-AD1F-R2 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/sensirion/SHT45-AD1F-R2.jpg" alt="SHT45-AD1F-R2" width="1200" height="900">[](https://pcbkit.io/parts/sensirion/SHT45-AD1F-R2)Questions
Is there a KiCad symbol and footprint for the SHT45-AD1F-R2?
Yes. The symbol is Sensor_Humidity:SHT4x and the footprint Sensor_Humidity:Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SHT45-AD1F-R2?
DFN-4, with 4 pins. Its footprint is drawn on this page.
Where is the SHT45-AD1F-R2 datasheet?
Sensirion publishes it: the Datasheet link on this page opens it.
Where can I order the SHT45-AD1F-R2?
JLCPCB lists it as part C5360602, with 3,644 in stock; the sellers' links on this page open their listings.
What can replace the SHT45-AD1F-R2?
Parts like it in the library: the SHT40-AD1B-R3 by Sensirion, the SHT40-CD1B-R3 by Sensirion, the SHT41-AD1F-R2 by Sensirion and the SHT40-N-NF by Nyfea. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the SHT45-AD1F-R2?
7 boards in 6 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
SHT40-AD1B-R3
DFN-4-EP(1.5x1.5)-40℃~+125℃ 0%RH~100%RH 1.08V~3.6V 16bit 400nA Built-in heater I2C ±0.2℃ ±1.8%RH DFN-4-EP(1.5x1.5) Temperature and Humidity Sensor ROHSSensirionUncategorisedSHT40-CD1B-R3
DFN-4(1.5x1.5)-40℃~+125℃ 0%RH~100%RH 1.08V~3.6V 16bit 400nA Factory calibration、Built-in heater I2C ±0.2℃ ±1.8%RH DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHSSensirionUncategorisedSHT41-AD1F-R2
DFN-4(1.5x1.5)-40℃~+125℃ 0%RH~100%RH 1.08V~3.6V 16bit 400nA Factory calibration、Built-in heater I2C ±0.2℃ ±1.8%RH DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHSSensirionUncategorisedSHT40-N-NF
DFN-4(1.5x1.5)DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHSNyfeaUncategorisedSHT41-P-NF
DFN-4(1.5x1.5)DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHSNyfeaUncategorisedSHT40-AD1F-R2
DFN-4(1.5x1.5)-40℃~+125℃ 0%RH~100%RH 1.08V~3.6V 16bit 400nA Factory calibration、Chemical gas resistance、Built-in heater I2C ±0.2℃ ±1.8%RH DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHSSensirionUncategorisedSHT41A-FD1B-R2
DFN-4(1.5x1.5)±2%RH、±0.2℃ DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHSSensirionUncategorisedSHT41I-AD1B-R2
DFN-4(1.5x1.5)-40℃~+125℃ 0%RH~100%RH 16bit 2.3V~5.5V 21uA Factory calibration、Built-in heater I2C ±0.2℃ ±2%RH DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHSSensirionUncategorised