SDP611 Equivalent & Substitute Parts

Part Overview

The SDP611 is a differential pressure sensor manufactured by Sensirion AG, designed for board mount applications with a measurement range of ±0.07PSI (±0.5kPa). The sensor features I2C output, 16-bit resolution, and temperature compensation. The SDP611 carries a "Not For New Designs" product status, making identification of equivalent alternatives essential for ongoing production and new project planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	SDP611
Manufacturer	Sensirion AG
Pressure Type	Differential
Operating Pressure Range	±0.07PSI (±0.5kPa)
Output Type	I2C
Output Resolution	16 bit
Accuracy	±3%
Supply Voltage	3V ~ 3.6V
Port Size	Male - 0.2" (5.2mm) Tube, Dual
Port Style	Barbed
Operating Temperature	-20°C ~ 80°C
Package / Case	3-SIP Module
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution eligibility for the SDP611 is determined by the following critical parameters:

Pressure Measurement Range: Operating pressure must be compatible with ±0.07PSI (±0.5kPa)
Output Interface: I2C digital output required
Output Resolution: 16-bit minimum
Accuracy: ±3% specification
Supply Voltage Compatibility: Must operate within or overlap the 3V ~ 3.6V range
Port Configuration: Male - 0.2" (5.2mm) Tube, Dual barbed connection
Temperature Compensation: Required feature
Compliance: ROHS3 compliant, REACH unaffected

Two substitute parts meet these criteria:

SDP810-500PA (MFR Recommended): Active product status with extended voltage range (3V ~ 5.5V) and improved temperature operating range (-20°C ~ 85°C)
SDP610-500PA (Parametric Equivalent): Identical specifications to SDP611, same series (SDP600), same product status classification

Parameter Comparison

Parameter	SDP611	SDP810-500PA	SDP610-500PA
Manufacturer	Sensirion AG	Sensirion AG	Sensirion AG
Pressure Type	Differential	Differential	Differential
Operating Pressure	±0.07PSI (±0.5kPa)	-0.07PSI ~ 0.07PSI (-0.5kPa ~ 0.5kPa)	±0.07PSI (±0.5kPa)
Output Type	I2C	I2C	I2C
Output Resolution	16 bit	16 bit	16 bit
Accuracy	±3%	±3%	±3%
Supply Voltage	3V ~ 3.6V	3V ~ 5.5V	3V ~ 3.6V
Port Size	Male - 0.2" (5.2mm) Tube, Dual	Male - 0.2" (5.2mm) Tube, Dual	Male - 0.2" (5.2mm) Tube, Dual
Port Style	Barbed	Barbed	Barbed
Features	Temperature Compensated	Temperature Compensated	Temperature Compensated
Operating Temperature	-20°C ~ 80°C	-20°C ~ 85°C	-20°C ~ 80°C
Product Status	Not For New Designs	Active	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Active Production and New Designs: SDP810-500PA is the recommended substitute. This part carries Active product status, ensuring long-term availability and manufacturer support. The extended supply voltage range (3V ~ 5.5V) provides design flexibility for systems with variable power supplies. The expanded operating temperature range (-20°C ~ 85°C) accommodates broader environmental conditions compared to the SDP611.

For Direct Replacement in Existing Designs: SDP610-500PA provides parametric equivalence to the SDP611 with identical electrical and mechanical specifications. Both parts belong to the SDP600 series and share the same "Not For New Designs" status. This option is suitable for legacy system maintenance where design modification is not feasible.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q: Can SDP810-500PA replace SDP611 in existing circuit designs?

A: Yes. The SDP810-500PA maintains identical pressure measurement range (±0.07PSI / ±0.5kPa), I2C output interface, 16-bit resolution, and ±3% accuracy. The extended supply voltage range (3V ~ 5.5V) is backward compatible with designs operating at 3V ~ 3.6V. Port configuration and barbed connection style are identical.

Q: What is the difference between SDP810-500PA and SDP610-500PA?

A: SDP810-500PA belongs to the SDP800 series with Active product status and extended voltage/temperature ranges. SDP610-500PA belongs to the SDP600 series with identical specifications to SDP611. Selection depends on product lifecycle requirements and environmental operating conditions.

Q: Are there package or termination differences between these parts?

A: SDP611 and SDP610-500PA both use 3-SIP Module packaging with PC Pin termination. SDP810-500PA uses Module packaging without specified termination style. Verify PCB footprint compatibility before substitution.

Q: Do all three parts require the same I2C protocol implementation?

A: All three parts feature I2C output with 16-bit resolution and identical accuracy specifications. Firmware implementation should be verified for any series-specific I2C command differences, though core communication protocol remains consistent across Sensirion differential pressure sensors in this category.

Q: Which substitute is recommended for new product development?

A: SDP810-500PA is recommended for new designs due to Active product status, ensuring manufacturer support and long-term component availability. The SDP611 and SDP610-500PA carry "Not For New Designs" status and should not be selected for new product development.

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