SX30DN Pressure Sensor Equivalent & Substitute Parts

Part Overview

The SX30DN is a differential pressure sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for board mount applications with a 30PSI (206.84kPa) differential pressure range. The sensor features a Wheatstone Bridge output configuration with 0 mV ~ 110 mV (5V) signal range and operates across -40°C to 85°C.

The SX30DN is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure continued supply chain availability, and support legacy equipment maintenance where direct replacement with the original part number is no longer feasible.

Substiute Parts

SX30DN

Honeywell Sensing and Productivity SolutionsIn Stock: 864SX30DN Datasheet

Current PartRFQ

NSCSHHN030PDUNV

Honeywell Sensing and Productivity SolutionsIn Stock: 2212NSCSHHN030PDUNV Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SX30DN is determined by the following critical parameters that must align between the main part and substitute candidates:

Mandatory Alignment Parameters:

• Pressure Type: Differential
• Output Type: Wheatstone Bridge
• Operating Pressure Range: 30PSI nominal
• Mounting Type: Through Hole
• Package Type: 4-SIP Module
• Operating Temperature Range: -40°C ~ 85°C
• Manufacturer: Honeywell Sensing and Productivity Solutions

Allowable Variation Parameters:

• Output Range: Substitute may have higher output range (0 mV ~ 207 mV) while maintaining 5V supply compatibility
• Accuracy: Substitute may have improved accuracy (±0.25% vs ±0.5%)
• Supply Voltage: Substitute may support wider voltage range (1.5V ~ 12V) while maintaining 12V operation capability
• Port Size: Substitute may have different tube diameter (0.16" vs 0.19") with barbed connection maintained
• Maximum Pressure: Substitute may have higher maximum pressure rating (±60PSI vs 90PSI)

The NSCSHHN030PDUNV meets all mandatory alignment criteria and represents an active product with enhanced specifications, making it a direct functional substitute for the obsolete SX30DN.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SX30DN is obsolete and no longer manufactured. The NSCSHHN030PDUNV is an active product currently in production, ensuring long-term supply chain availability and support.

Compliance and Certification: Both parts maintain identical RoHS compliance and REACH unaffected status. Both are classified under ECCN EAR99 and HTSUS 9026.20.4000, ensuring regulatory consistency in applications requiring compliance documentation.

Functional Equivalence: The NSCSHHN030PDUNV operates as a direct functional substitute based on identical pressure type, output type, operating pressure range, temperature range, and mounting configuration. The substitute is part of Honeywell's TruStability® NSC series, representing current-generation technology from the same manufacturer.

Specification Enhancements: The substitute part offers improved accuracy (±0.25% vs ±0.5%) and higher output sensitivity (0 mV ~ 207 mV vs 0 mV ~ 110 mV), providing better signal resolution in measurement applications. The wider supply voltage range (1.5V ~ 12V) offers greater design flexibility while maintaining full compatibility with 12V supply systems.

Physical Interface Consideration: The substitute features a 0.16" (3.94mm) tube diameter versus the original 0.19" (4.8mm). Both maintain barbed connection style. Applications requiring the original tube diameter specification must evaluate tubing adapter requirements or alternative substitutes.

Frequently Asked Questions (FAQ)

Q: Can the NSCSHHN030PDUNV directly replace the SX30DN without circuit modifications?

A: The NSCSHHN030PDUNV is functionally compatible as a Wheatstone Bridge output sensor with identical operating pressure, temperature range, and supply voltage capability. However, the higher output sensitivity (207 mV vs 110 mV full scale) requires signal conditioning circuit adjustment to maintain the same measurement range. Tubing adapter may be required due to different port diameter (0.16" vs 0.19").

Q: What is the impact of the different output range (207 mV vs 110 mV)?

A: The substitute provides approximately 1.88x higher output sensitivity. In systems with fixed analog-to-digital converter (ADC) input ranges, this results in better measurement resolution but requires recalibration of signal scaling factors. The 5V supply voltage remains compatible with both parts.

Q: Are there supply chain advantages to using the NSCSHHN030PDUNV?

A: Yes. The NSCSHHN030PDUNV is an active product with 2200 pieces currently in stock, compared to the obsolete SX30DN. Active product status ensures continued availability, manufacturer support, and technical documentation updates.

Q: Does the lower maximum pressure rating (±60PSI vs 90PSI) affect substitution suitability?

A: Applications operating below 60PSI maximum pressure are unaffected. Systems designed to utilize the full 90PSI maximum pressure capability of the original part require evaluation of actual operating pressure margins to confirm the substitute's ±60PSI rating is adequate.

Q: What tubing considerations apply to the port size difference?

A: The substitute uses 0.16" (3.94mm) barbed ports versus the original 0.19" (4.8mm). Existing tubing sized for 0.19" ports will not fit the 0.16" barbed connections. Tubing adapters or replacement tubing sized for 0.16" ports is required for physical integration.

Q: Are both parts suitable for the same temperature range applications?

A: Yes. Both the SX30DN and NSCSHHN030PDUNV operate across -40°C to 85°C, making them suitable for identical temperature range applications without thermal performance differences.