SDP2108-R Equivalent & Substitute Parts

Part Overview

The SDP2108-R is a differential pressure sensor manufactured by Sensirion AG, designed for board mount applications with a 0.51PSI (3.49kPa) operating pressure range and analog voltage output (0.25V ~ 4V). The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations. The sensor features temperature compensation and operates across -40°C to 80°C, with barbed male connectors for 0.2" (5.2mm) tubing.

Substiute Parts

SDP2108-R

Sensirion AGIn Stock: 829SDP2108-R Datasheet

Current PartRFQ

SDP2000-L

Sensirion AGIn Stock: 1116SDP2000-L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SDP2108-R is determined by the following critical parameters:

Mechanical Compatibility:

• Port configuration: Male - 0.2" (5.2mm) Tube, Dual barbed connectors
• Package type: Module form factor
• Board mount application requirement

Electrical Compatibility:

• Output type: Analog Voltage (0.25V ~ 4V)
• Supply voltage tolerance: 5V nominal operation
• Temperature compensation feature

Functional Compatibility:

• Differential pressure measurement capability
• Operating pressure range overlap or containment
• Accuracy specification within acceptable tolerance
• Maximum pressure rating: 14.5PSI (100kPa) minimum

The SDP2000-L qualifies as a substitute based on matching mechanical connectors, identical output voltage range, compatible supply voltage specification, temperature compensation, and equivalent maximum pressure rating. The SDP2000-L operates within a narrower pressure range (-0.015PSI ~ 0.508PSI) that encompasses the SDP2108-R nominal operating point of 0.51PSI.

Parameter Comparison

Engineering Selection Recommendations

The SDP2108-R is obsolete and no longer manufactured. The SDP2000-L is the qualified substitute from Sensirion AG, currently in active production status with full availability.

Compliance and Certification: Both components maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Mechanical and Electrical Compatibility: The SDP2000-L maintains identical mechanical interfaces (barbed male connectors for 0.2" tubing) and electrical output specifications (0.25V ~ 4V analog voltage), ensuring direct functional replacement in existing board mount applications.

Performance Considerations: The SDP2000-L provides improved measurement accuracy (±0.2% versus ±0.4%) and operates within a pressure range that encompasses the SDP2108-R nominal operating point. The SDP2000-L supply voltage specification (4.75V ~ 5.25V) provides wider tolerance margins compared to the SDP2108-R 5V nominal requirement.

Temperature Operating Range: The SDP2108-R operates across -40°C to 80°C, while the SDP2000-L operates across -10°C to 60°C. Applications requiring operation below -10°C or above 60°C must evaluate alternative solutions, as the SDP2000-L does not extend to the full temperature range of the obsolete component.

Frequently Asked Questions (FAQ)

Q: Can the SDP2000-L directly replace the SDP2108-R in existing designs?

A: The SDP2000-L is mechanically and electrically compatible for applications operating within -10°C to 60°C. Designs requiring the full -40°C to 80°C temperature range of the SDP2108-R require alternative component evaluation.

Q: What are the key differences between these sensors?

A: The primary differences are product status (SDP2108-R is obsolete; SDP2000-L is active), operating temperature range (SDP2108-R: -40°C ~ 80°C; SDP2000-L: -10°C ~ 60°C), accuracy specification (SDP2108-R: ±0.4%; SDP2000-L: ±0.2%), and supply voltage tolerance (SDP2108-R: 5V; SDP2000-L: 4.75V ~ 5.25V).

Q: Are the connector types identical?

A: Yes. Both sensors use male barbed connectors for 0.2" (5.2mm) tubing with dual port configuration, ensuring mechanical compatibility.

Q: Do both sensors provide temperature compensation?

A: Yes. Both the SDP2108-R and SDP2000-L include temperature compensation as a standard feature.

Q: What is the packaging difference?

A: The SDP2108-R is supplied in standard module packaging. The SDP2000-L is supplied in tray packaging. Both maintain identical module form factors for board mount applications.

Q: Are there regulatory compliance differences?

A: No. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What pressure ranges do these sensors measure?

A: The SDP2108-R operates at 0.51PSI (3.49kPa) nominal differential pressure. The SDP2000-L operates across -0.015PSI ~ 0.508PSI (-0.1kPa ~ 3.5kPa), with the SDP2108-R nominal point falling within the SDP2000-L measurement range.