Home / F661/F663 PCB Board-Mount Digital Airflow Sensor
Horizontal airflow sensor for low-profile mounting on PCB and PCBA.


Board-Mount Digital Airflow Sensor (Horizontal Profile)

The F661/F663 is the smallest, fully-integrated, board-solderable, digital air velocity and air temperature sensor on the market, for real-time on-board measurement. The F661 (15-24V input) and F663 (5-12V input) can be soldered directly to a printed circuit board, or plugged into a surface-mount socket for easy removal. The lower profile is used in 1RU electronic systems, or those where component height is heavily restricted.
Airflow sensor with dual elements to measure both air velocity and air temperature.

Dual sensing element with protective shroud

Provides fully linearized air velocity and air
temperature with wide operating range
Compact design of this airflow sensor gives it a low profile when mounted on PCB or PCBA within tight enclosures.

Smallest footprint sensor on the market

Less than 20mA power consumption

Up to 5% Accuracy & Repeatability
Available flow learning command for accuracy
optimization, post-soldering
Digital UART or I²C Communication
Alarm output option available for switch style operation

Specs & Details

  • Designed for 1RU & Low Profile Electronics
  • Designed for Wave Solder Systems
  • Velocity Range: 0.15m/s – 20.0m/s (30fpm – 4000fpm)
  • Response Time: 400 ms
  • Input Voltage Range: 5 – 24 VDC
  • Digital Output: 3.3 VDC UART or I²C
  • Optional Alarm Output

F661 (15V Version)
F663 (5V Version)
Normal lead-time is 2-3 business days.


Data Sheet (F661/F663)
Manual (Board Mount Sensors)

Related Hardware

F200 - Digital Air Velocity
& Air Temperature Sensor
F-Series Probe - Air Velocity & Temperature Sensor
F-Series Remote Head -
Air Velocity & Temperature
S-Series - Air Velocity & Temperature Switch
F660/F662 - Board-Mount Digital Airflow Sensor (Vertical Profile)
RFS300 Board-Mount Digital Airflow Sensor (Reference Design)