View products below to see detailed pricing

Ultra-low Pressure Digital Sensor

MEAS

SMI 9000

The SM9000 series are ultra-low, digital, calibrated and compensated MEMS pressure sensors with pressure ranges as low as 125 Pa in a JEDEC standard SOIC-16 package.

More Less

Datasheet |
Digital Datasheet|

Product Features

Pressure Sensor Type : Digital Pressure and Altimeter Sensor Modules
Pressure Type : Differential, Gauge
Pressure (inH2O): 2.4, 1.2, 1, .5
Pressure (mmHG): 2.27, 4.5, .9, 1.86
Proof Pressure Range : .07 bar

Available from

Product	TE Part #	Documents	Pressure	Pressure Type	Pressure	Pressure	Pressure Accuracy	Supply Voltage Range	Sensor Options	EU ELV Compliance
300PA DIFF. DIGITAL PRESSURE SENSOR	9233-BCE-T-300-000	3D PDF	-	-	Gauge	2.27 mmHG	.003 bar	-	3.3 – 5 V	Barb Tube, Increased Accuracy	Compliant
250PA DIFF. DIGITAL PRESSURE SENSOR	9336-BCE-T-250-000	3D PDF	-	Differential	-	-	±1.5% F.S	3 V	Barb Tube, No Option	Compliant
600PA DIFF. DIGITAL PRESSURE SENSOR	9236-BCE-S-600-002	3D PDF	-	Gauge	-	-	±1.5% F.S	5 V	Barb Tube, No Option	Compliant
125PA DIFF. DIGITAL PRESSURE SENSOR	9333-BCE-S-125-000	3D PDF	-	Differential	-	-	±3% F.S	3 V	Barb Tube, No Option	Compliant
300PA DIFF. DIGITAL PRESSURE SENSOR	9235-BBE-T-300-000	3D PDF	-	Gauge	-	-	±2.5% F.S	3 V	Barb Tube, No Option	Compliant
600PA DIFF. DIGITAL PRESSURE SENSOR	9236-BCE-T-600-002	3D PDF	-	Gauge	-	-	±1.5% F.S	5 V	Barb Tube, No Option	Compliant
250PA DIFF. DIGITAL PRESSURE SENSOR	9336-BBE-T-250-000	3D PDF	-	-	Differential	1.86 mmHG	.002 bar	-	3.3 – 5 V	Barb Tube, Increased Accuracy	-
300PA DIFF. DIGITAL PRESSURE SENSOR	9236-BBE-T-300-000	3D PDF	-	Gauge	-	-	±1.5% F.S	3 V	Barb Tube, No Option	Compliant
125PA DIFF. DIGITAL PRESSURE SENSOR Buy on te.com	9333-BBE-S-125-000	3D PDF	-	-	Differential	.9 mmHG	.001 bar	-	3.3 – 5 V	Barb Tube, Increased Accuracy	Compliant
250PA DIFF. DIGITAL PRESSURE SENSOR	9336-BBE-S-250-000	3D PDF	-	-	Differential	1.86 mmHG	.002 bar	-	3.3 – 5 V	Barb Tube, Increased Accuracy	Compliant
125PA DIFF. DIGITAL PRESSURE SENSOR	9333-BBE-T-125-000	3D PDF	-	-	Differential	.9 mmHG	.001 bar	-	3.3 – 5 V	Barb Tube, Increased Accuracy	Compliant
300PA DIFF. DIGITAL PRESSURE SENSOR	9235-BCE-T-300-002	3D PDF	-	Gauge	-	-	±2.5% F.S	5 V	Barb Tube, No Option	Compliant
600PA DIFF. DIGITAL PRESSURE SENSOR	9236-BCE-T-600-000	3D PDF	-	Gauge	-	-	±1.5% F.S	3 V	Barb Tube, No Option	Compliant
250PA DIFF. DIGITAL PRESSURE SENSOR	9233-BCE-T-250-002	3D PDF	-	Gauge	-	-	±3% F.S	5 V	Barb Tube, No Option	-
300PA DIFF. DIGITAL PRESSURE SENSOR	9235-BCE-T-300-000	3D PDF	-	Gauge	-	-	±2.5% F.S	3 V	Barb Tube, No Option	Compliant
250PA DIFF. DIGITAL PRESSURE SENSOR	9233-BCE-S-250-002	3D PDF	-	Gauge	-	-	±3% F.S	5 V	Barb Tube, No Option	Compliant
250PA DIFF. DIGITAL PRESSURE SENSOR	9233-BCE-S-250-000	3D PDF	-	Gauge	-	-	±3% F.S	3 V	Barb Tube, No Option	Compliant
250PA DIFF. DIGITAL PRESSURE SENSOR	9336-BCE-S-250-000	3D PDF	-	Differential	-	-	±1.5% F.S	3 V	Barb Tube, No Option	Compliant
125PA DIFF. DIGITAL PRESSURE SENSOR	9333-BCE-T-125-002	3D PDF	-	Differential	-	-	±3% F.S	5 V	Barb Tube, No Option	Compliant
300PA DIFF. DIGITAL PRESSURE SENSOR	9235-BCE-S-300-000	3D PDF	-	Gauge	-	-	±2.5% F.S	3 V	Barb Tube, No Option	Compliant
600PA DIFF. DIGITAL PRESSURE SENSOR	9236-BCE-S-600-000	3D PDF	-	Gauge	-	-	±1.5% F.S	3 V	Barb Tube, No Option	Compliant
300PA DIFF. DIGITAL PRESSURE SENSOR	9235-BCE-S-300-002	3D PDF	-	Gauge	-	-	±2.5% F.S	5 V	Barb Tube, No Option	Compliant
125PA DIFF. DIGITAL PRESSURE SENSOR Buy on te.com	9333-BCE-T-125-000	3D PDF	-	Differential	-	-	±3% F.S	3 V	Barb Tube, No Option	Compliant
300PA DIFF. DIGITAL PRESSURE SENSOR	9236-BBE-S-300-000	3D PDF	-	Gauge	-	-	±1.5% F.S	3 V	Barb Tube, No Option	Compliant
250PA DIFF. DIGITAL PRESSURE SENSOR	9233-BCE-T-250-000	3D PDF	-	Gauge	-	-	±3% F.S	3 V	Barb Tube, No Option	Compliant

Overview

The SM9000 series offers pressure ranges as low as 125 Pa with a 16-bit I2C digital interface. The ultra-low pressure sensors are available in gauge and differential pressure configuration in a JEDEC standard SOIC-16 package with dual vertical or horizontal porting. The total error band after board mount and system level autozero is less than 1%FS. The warmup behavior and long-term stability further confirms its expected performance over the life of the part.

Combining the pressure sensor with a signal-conditioning ASIC in a single package simplifies the use of advanced silicon micro-machined pressure sensors. The pressure sensor can be mounted directly on a standard printed circuit board and a high level, calibrated pressure signal can be acquired from the digital interface. This eliminates the need for additional circuitry, such as a compensation network or microcontroller containing a custom correction algorithm.

Benefits

Differential pressure ranges ±125 and ±250 Pa
Gauge pressure ranges 0-250, 0-300 and 0-600 Pa
Total error band after autozero: < 1%FS
16-bit I²C digital interface
Pressure calibrated and temperature compensated output
Compensated temperature range: -20 to 85^oC

Applications

Respiratory devices - CPAP machines, medical ventilators, oxygen concentrators
Air and gas flow instrumentation
HVACR - VAV controller, filter monitoring

LEARN MORE

Related Material

TOPIC	RESOURCES
SMI Low Pressure Sensors	Solution Guide
Ventilator Application Guide	Application Guide
Sleep Mode And Other Low Power Strategies	Application Note
Trust and Reliability For In-Home Medical Sensors	White Paper

FAQ

FREQUENTLY ASKED QUESTIONS

What is the proof pressure (maximum pressure to which the device can be taken and still perform within specifications (without loss of accuracy) after returning to the operating pressure range) for the SM9000 sensor?

The proof pressure for the ultra-low pressure sensor is 7 kPa (1 PSI).

What is the burst pressure (pressure where part is permanently damaged) of the SM9000 Series?

The burst pressure for the ultra-low pressure sensor is 20 kPa (2.9 PSI).

What is the difference between differential and gauge pressure?

Differential pressure

dP=P1-P2 is the pressure difference between two points, 1 and 2. P1 and P2 are respective pressure at the two points. This could be across an air flow restrictor in a HVAC system, or across a filter in the HVAC system, or in a ventilator system to detect and control inhalation / exhalation air flow.

Gauge pressure

Gauge pressure is the pressure differential with respect to the atmospheric pressure. Generally -not always, gauge pressure is higher than atmospheric pressure, so gauge pressure sensors are calibrated to have its output be at minimum at atmospheric pressure, and increase from there. Gauge pressure sensors are used to measure e.g. pressure in a pressure in a manifold.

Features

Please review product documents or contact us for the latest agency approval information.

Operation/Application

Output Interface I²C
Pressure (inH2O) 2.4, 1.2, 1, .5
Pressure (mmHG) 2.27, 4.5, .9, 1.86
Proof Pressure Range .07 bar
Output Signal Type 16 bit I2C
Pressure Accuracy ±1.5% F.S, ±2.5% F.S, ±3% F.S

Dimensions

Product Width 10.31 mm [ .405 in ]
Product Height (mm) 9.32, 5.54
Product Height (in) .366, .218
Product Length (mm) 19.6, 10.26
Product Length (in) .403, .771

Product Type Features

Sensor Package SOIC-16
Pressure Sensor Type Digital Pressure and Altimeter Sensor Modules
Pressure Type Differential, Gauge

Packaging Features

Sensor Port Configuration Dual Vertical, Dual Horizontal

Electrical Characteristics

Supply Voltage Range (V) 3.3 – 5, 5, 3

Usage Conditions

Pressure (bar) .002, .005, .001, .003
Pressure (psi) .036, .018, .044, .087
Operating Temperature Range -20 – 85 °C [ -4 – 185 °F ]

Other

Sensor Options No Option, Barb Tube, Increased Accuracy
EU RoHS Compliance Compliant
EU ELV Compliance Compliant

Reference Number

TE Internal Number CAT-BLPS0062

Related Materials

CAD Files

3D PDF pdf 3D
3D PDF pdf 3D
Customer View Model 2d_dxf.zip English
Customer View Model 3d_igs.zip English
Customer View Model 3d_stp.zip English
Customer View Model 2d_dxf.zip English
Customer View Model 3d_igs.zip English
Customer View Model 3d_stp.zip English

Datasheets & Catalog Pages

SM9000 pdf English

Ultra-low Pressure Digital Sensor

Product Features

Pressure Sensor Type : Digital Pressure and Altimeter Sensor Modules

Pressure Type : Differential, Gauge

Pressure (inH2O): 2.4, 1.2, 1, .5

Pressure (mmHG): 2.27, 4.5, .9, 1.86

Proof Pressure Range : .07 bar

Benefits

Applications

LEARN MORE

Related Material

FREQUENTLY ASKED QUESTIONS

Operation/Application

Output Interface I²C

Pressure (inH2O) 2.4, 1.2, 1, .5

Pressure (mmHG) 2.27, 4.5, .9, 1.86

Proof Pressure Range .07 bar

Output Signal Type 16 bit I2C

Pressure Accuracy ±1.5% F.S, ±2.5% F.S, ±3% F.S

Dimensions

Product Width 10.31 mm [ .405 in ]

Product Height (mm) 9.32, 5.54

Product Height (in) .366, .218

Product Length (mm) 19.6, 10.26

Product Length (in) .403, .771

Product Type Features

Sensor Package SOIC-16

Pressure Sensor Type Digital Pressure and Altimeter Sensor Modules

Pressure Type Differential, Gauge

Packaging Features

Sensor Port Configuration Dual Vertical, Dual Horizontal

Electrical Characteristics

Supply Voltage Range (V) 3.3 – 5, 5, 3

Usage Conditions

Pressure (bar) .002, .005, .001, .003

Pressure (psi) .036, .018, .044, .087

Operating Temperature Range -20 – 85 °C [ -4 – 185 °F ]

Other

Sensor Options No Option, Barb Tube, Increased Accuracy

EU RoHS Compliance Compliant

EU ELV Compliance Compliant

Reference Number

TE Internal Number CAT-BLPS0062

CAD Files

Datasheets & Catalog Pages

Solution Guides

Application Note

White Paper