SCX150DNC Equivalent & Substitute Parts

Part Overview

The SCX150DNC 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 with ±5% accuracy. This product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SCX150DNC

Honeywell Sensing and Productivity SolutionsIn Stock: 827SCX150DNC Datasheet

Current PartRFQ

TSCSNBN150PGUCV

Honeywell Sensing and Productivity SolutionsIn Stock: 1056TSCSNBN150PGUCV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCX150DNC requires evaluation based on the following critical parameters:

Pressure Measurement Capability: The substitute must support 150PSI (1034.21kPa) operating pressure. The TSCSNBN150PGUCV supports 150PSI operating pressure with a maximum pressure rating of 245PSI (1689.22kPa), providing adequate pressure range coverage.

Output Signal Compatibility: The SCX150DNC outputs 0 mV ~ 90 mV at 12V supply. The TSCSNBN150PGUCV outputs 0 mV ~ 45.75 mV at 5V supply. Both utilize Wheatstone Bridge output topology, enabling signal conditioning through equivalent bridge amplification circuits.

Pressure Type Consideration: The SCX150DNC measures differential pressure, while the TSCSNBN150PGUCV measures vented gauge pressure. This represents a functional difference in measurement principle that must be evaluated against application requirements.

Physical Interface: Both sensors feature male 0.19" (4.8mm) tube dual ports with through-hole mounting. The SCX150DNC uses barbed port style while the TSCSNBN150PGUCV uses barbless ports, requiring connector compatibility assessment.

Electrical Interface: Both sensors use PC pin termination and 6-pin/4-pin SIP module packages, supporting direct PCB integration.

Temperature Range: Both sensors operate across -40°C ~ 85°C, providing equivalent thermal performance.

Parameter Comparison

Engineering Selection Recommendations

The TSCSNBN150PGUCV is the documented substitute for the SCX150DNC based on manufacturer specifications. Selection of this substitute is supported by the following factors:

Product Status: The TSCSNBN150PGUCV maintains active product status with current manufacturing support, ensuring long-term availability and supply chain continuity compared to the obsolete SCX150DNC.

Regulatory Compliance: The TSCSNBN150PGUCV is RoHS Compliant, meeting current environmental and material restriction requirements. Compliance status for the SCX150DNC is not specified.

Pressure Range Coverage: The TSCSNBN150PGUCV maximum pressure rating of 245PSI (1689.22kPa) exceeds the 150PSI operating requirement, providing design margin and overpressure protection.

Measurement Accuracy: The TSCSNBN150PGUCV delivers ±0.15% accuracy compared to the SCX150DNC ±5% accuracy, representing a significant improvement in measurement precision.

Electrical Interface Compatibility: Both sensors employ Wheatstone Bridge output with PC pin termination, enabling signal conditioning circuit reuse with appropriate gain adjustment for the different output voltage ranges.

Application-Specific Evaluation: Substitution requires confirmation that vented gauge pressure measurement satisfies the original differential pressure measurement requirement. Applications requiring true differential pressure measurement may require alternative evaluation.

Frequently Asked Questions (FAQ)

Q: Can the TSCSNBN150PGUCV directly replace the SCX150DNC without circuit modifications?

A: Direct physical replacement is possible due to matching port sizes (0.19" male tubes), dual port configuration, and through-hole PC pin termination. However, signal conditioning circuits require adjustment because the TSCSNBN150PGUCV outputs 0 mV ~ 45.75 mV at 5V supply compared to the SCX150DNC 0 mV ~ 90 mV at 12V supply. Bridge amplifier gain and reference voltage settings must be recalibrated.

Q: What is the functional difference between differential and vented gauge pressure measurement?

A: Differential pressure sensors measure the pressure difference between two independent pressure inputs. Vented gauge pressure sensors measure pressure relative to atmospheric pressure through a vent port. Application requirements determine which measurement type is appropriate.

Q: Are the port connectors compatible between these sensors?

A: Both sensors feature male 0.19" (4.8mm) tube dual ports. The SCX150DNC uses barbed ports while the TSCSNBN150PGUCV uses barbless ports. Tubing connection compatibility depends on the specific connector type and barb engagement design used in the original application.

Q: What is the impact of the different package sizes (6-SIP vs. 4-SIP)?

A: The SCX150DNC uses a 6-SIP module while the TSCSNBN150PGUCV uses a 4-SIP module with dual ports on the same side. PCB layout modifications may be required to accommodate the different pin count and port orientation. Pin-to-function mapping must be verified against each sensor's pinout documentation.

Q: Does the improved accuracy of the TSCSNBN150PGUCV (±0.15% vs. ±5%) require system recalibration?

A: System recalibration is recommended when substituting sensors with significantly different accuracy specifications. The improved accuracy of the TSCSNBN150PGUCV may enable tighter system tolerances or reduce calibration intervals depending on application requirements.

Q: Is the TSCSNBN150PGUCV suitable for the full -40°C ~ 85°C operating temperature range?

A: Yes, the TSCSNBN150PGUCV supports the complete -40°C ~ 85°C operating temperature range, matching the SCX150DNC thermal specification.