SM9333/SM9336 Ultra Low Differential Pressure Sensor
Pressure Medium: Air/Gas
Sensor Type: Differential
Supply Voltage: Under 5V
Output Signal: Digital
Pressure Range: Under 4” H2O

The SM9333/9336 are digital, ultra-low pressure sensors offering state-of-the-art MEMS pressure transducer technology and CMOS mixed signal processing to produce a digital, fully-conditioned, multi-order pressure and temperature-compensated sensor in JEDEC standard SOIC-16 package with a dual vertical porting option. It is available as a differential pressure sensor. 

The total accuracy after board mount and system level auto-zero is less than 1%FS. The excellent warmup behavior and long term stability further assures its expected performance over the life of the part. The SM9333/SM9336 are shipped in sticks or tape & reel. 


  • Pressure ranges: 125 Pa and 250 Pa differential (0.5" H2O & 1" H2O)
  • 16 bit I2C digital interface
  • Compensated temperature range of -20°C up to 85°C
  • Insensitive to mounting orientation
  • Robust JEDEC SOIC-16 package

Typical Uses

  • Medical - sleep apnea, spirometers, respiration
  • HVAC such as VAV controllers, filter monitoring, fire protection
  • Pneumatic gages
  • Critical containment applications such as fume hoods and biological safety cabinets & cleanrooms

Compares Favorably to

  • NXP MPXx4006, MPXx5050, MPXx6115, MPXV7002, MPXV5004