SDP1108-R Equivalent & Substitute Parts

Part Overview

The SDP1108-R is a differential pressure sensor manufactured by Sensirion AG, designed for board mount applications with a 0.07 PSI (0.5 kPa) operating pressure range and 0.25 V ~ 4 V analog voltage output. The part operates at 5V supply voltage with ±0.4% accuracy and temperature compensation across -40°C ~ 80°C. This component carries a "Not For New Designs" product status, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SDP1108-R

Sensirion AGIn Stock: 1575SDP1108-R Datasheet

Current PartRFQ

SDP816-500PA

Sensirion AGIn Stock: 1473SDP816-500PA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SDP816-500PA qualifies as a manufacturer-recommended substitute based on the following alignment criteria:

Matching Parameters:

• Differential pressure sensor classification
• Identical port configuration: Male - 0.2" (5.2mm) Tube, Dual barbed style
• Analog voltage output type
• Temperature compensation feature
• Maximum pressure rating: 14.5 PSI (100 kPa)
• Module package type
• RoHS3 compliance and REACH unaffected status
• Sensirion AG manufacturer continuity

Functional Compatibility Basis: Both sensors operate within the same pressure measurement family with compatible mechanical interfaces and electrical output characteristics suitable for board mount applications.

Parameter Comparison

Engineering Selection Recommendations

The SDP816-500PA is designated as the manufacturer-recommended substitute for the SDP1108-R. The substitute part maintains Active product status, ensuring long-term availability and supply chain continuity compared to the original part's "Not For New Designs" classification. Both components satisfy ROHS3 compliance and REACH requirements, supporting regulatory obligations in current manufacturing environments.

The SDP816-500PA operates across a wider supply voltage range (3V ~ 5.5V versus fixed 5V) and extends the lower operating temperature limit to -20°C, providing enhanced flexibility in system integration scenarios. The substitute's bidirectional pressure measurement capability (-0.07 PSI ~ 0.07 PSI) encompasses the unidirectional range of the original part (0.07 PSI), ensuring functional coverage for existing applications.

Frequently Asked Questions (FAQ)

Q: Can the SDP816-500PA directly replace the SDP1108-R in existing designs?

A: The SDP816-500PA shares identical mechanical interfaces (port size, barbed style) and electrical output classification (analog voltage). Both components feature temperature compensation and equivalent maximum pressure ratings. Substitution is mechanically and functionally compatible at the interface level.

Q: What are the key electrical differences between these sensors?

A: The SDP1108-R outputs 0.25 V ~ 4 V with ±0.4% accuracy at fixed 5V supply. The SDP816-500PA outputs 0.5 V ~ 4.5 V with ±3% accuracy and accepts 3V ~ 5.5V supply voltage. The substitute provides wider voltage tolerance and bidirectional pressure measurement (-0.07 PSI ~ 0.07 PSI) versus the original's unidirectional range.

Q: Are there temperature operating range differences?

A: The SDP1108-R operates -40°C ~ 80°C. The SDP816-500PA operates -20°C ~ 85°C. The substitute has a narrower lower temperature limit but extends the upper limit by 5°C.

Q: Why is the SDP1108-R marked "Not For New Designs"?

A: This designation indicates the part is in end-of-life status. The SDP816-500PA, carrying Active status, is the recommended path for new system implementations and ongoing production support.

Q: Do both sensors use the same packaging and mounting approach?

A: Both components are supplied in Module package type with identical Male - 0.2" (5.2mm) Tube, Dual barbed port configuration, ensuring mechanical compatibility in board mount applications.