SCX150DN Equivalent & Substitute Parts Reference

Part Overview

The SCX150DN is a differential pressure sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for board mount applications requiring 150PSI (1034.21kPa) differential pressure measurement. The sensor outputs a Wheatstone Bridge signal of 0 mV ~ 90 mV at 12V supply voltage and features temperature compensation across an operating range of -40°C to 85°C.

The SCX150DN is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure continued availability for maintenance and production, and evaluate alternative solutions that may offer improved specifications or active product status.

Substiute Parts

SCX150DN

Honeywell Sensing and Productivity SolutionsIn Stock: 1437SCX150DN Datasheet

Current PartRFQ

TSCSNBN150PGUCV

Honeywell Sensing and Productivity SolutionsIn Stock: 1056TSCSNBN150PGUCV Datasheet

SimilarRFQ

PHPSU-4502-150P-D-SP

Angst+Pfister Sensors and Power AGIn Stock: 895PHPSU-4502-150P-D-SP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCX150DN are evaluated based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Pressure Type (Differential vs. Vented Gauge)
• Operating Pressure Rating (150PSI minimum)
• Output Type (Wheatstone Bridge)
• Port Size and Style (Male - 0.19" Tube, Dual configuration)
• Mounting Type (Through Hole)
• Termination Style (PC Pin)
• Temperature Compensated feature

Secondary Compatibility Considerations:

• Supply voltage compatibility with system design
• Output signal range and accuracy specifications
• Operating temperature range
• Package form factor (6-SIP Module preferred for direct replacement)
• Product status and availability

Two substitute parts meet the core compatibility requirements with varying degrees of parameter alignment.

Parameter Comparison

Engineering Selection Recommendations

PHPSU-4502-150P-D-SP (Angst+Pfister Sensors and Power AG)

This substitute provides the closest functional equivalence to the SCX150DN. Both sensors share identical pressure type (Differential), operating pressure (150PSI), output type (Wheatstone Bridge), output signal range (0 mV ~ 90 mV at 12V), port configuration (Male - 0.19" Tube, Dual with Barbed style), and package form factor (6-SIP Module). The PHPSU-4502-150P-D-SP maintains active product status, ensuring ongoing availability and supply chain continuity. Supply voltage compatibility spans 12V ~ 20V, accommodating the SCX150DN's 20V specification. Accuracy specification of ±0.5% represents an improvement over the SCX150DN's ±1%. Operating temperature range of -25°C ~ 85°C covers the upper portion of the SCX150DN's -40°C ~ 85°C range. This part is suitable for direct replacement in applications where the lower temperature limit of -25°C is acceptable.

TSCSNBN150PGUCV (Honeywell Sensing and Productivity Solutions)

This substitute is an active product from the same manufacturer as the SCX150DN, offering superior accuracy (±0.15%) and higher maximum pressure rating (245PSI). However, the TSCSNBN150PGUCV differs in pressure type (Vented Gauge vs. Differential), output signal range (0 mV ~ 45.75 mV at 5V vs. 0 mV ~ 90 mV at 12V), package configuration (4-SIP vs. 6-SIP), and port style (Barbless vs. Barbed). These differences require circuit redesign and mechanical interface modification. This substitute is applicable only when system requirements can accommodate vented gauge pressure measurement and the lower output signal range.

Frequently Asked Questions (FAQ)

Q: Can the PHPSU-4502-150P-D-SP directly replace the SCX150DN without circuit modification?

A: The PHPSU-4502-150P-D-SP shares identical electrical output characteristics (0 mV ~ 90 mV at 12V), pressure type (Differential), and mechanical port configuration (Male - 0.19" Tube, Dual Barbed) with the SCX150DN. Both use 6-SIP Module packaging with PC Pin termination for through-hole mounting. Direct replacement is feasible provided the operating temperature range of -25°C ~ 85°C meets application requirements.

Q: Why is the TSCSNBN150PGUCV listed as a substitute if it has different pressure type and output signal?

A: The TSCSNBN150PGUCV is included as a substitute option for applications where system redesign is acceptable. It represents an active Honeywell product with superior accuracy and higher pressure rating. However, substitution requires modification of signal conditioning circuits due to the different output range (45.75 mV vs. 90 mV) and pressure measurement principle (Vented Gauge vs. Differential). This substitute is not suitable for direct plug-in replacement.

Q: What is the significance of the port style difference (Barbed vs. Barbless)?

A: Port style affects tubing connection method and mechanical interface design. The SCX150DN and PHPSU-4502-150P-D-SP both use Barbed ports, which grip tubing through barb engagement. The TSCSNBN150PGUCV uses Barbless ports, requiring different tubing connectors or compression fittings. This mechanical difference necessitates interface redesign if substituting with the TSCSNBN150PGUCV.

Q: Is the PHPSU-4502-150P-D-SP suitable for applications requiring -40°C operation?

A: No. The PHPSU-4502-150P-D-SP operating temperature range is -25°C ~ 85°C, which does not extend to -40°C. Applications requiring operation at -40°C must retain the SCX150DN or identify alternative solutions with extended low-temperature specifications.

Q: What are the supply voltage compatibility considerations?

A: The SCX150DN operates at 20V supply. The PHPSU-4502-150P-D-SP accepts 12V ~ 20V, making it compatible with the SCX150DN's supply voltage. The TSCSNBN150PGUCV accepts 1.5V ~ 12V, which does not accommodate 20V operation without voltage regulation modification.

Q: How do accuracy specifications affect sensor selection?

A: The SCX150DN specifies ±1% accuracy. The PHPSU-4502-150P-D-SP provides ±0.5% accuracy, representing improved measurement precision. The TSCSNBN150PGUCV provides ±0.15% accuracy, the highest among the three options. Accuracy selection depends on application measurement requirements and signal processing capabilities.